gnu: mit-krb5: Update to 1.13.3; add fixes for CVE-2015-{8629,8630,8631}.

* gnu/packages/patches/mit-krb5-CVE-2015-2695-pt1.patch,
  gnu/packages/patches/mit-krb5-CVE-2015-2695-pt2.patch,
  gnu/packages/patches/mit-krb5-CVE-2015-2696.patch,
  gnu/packages/patches/mit-krb5-CVE-2015-2697.patch,
  gnu/packages/patches/mit-krb5-CVE-2015-2698-pt1.patch,
  gnu/packages/patches/mit-krb5-CVE-2015-2698-pt2.patch: Delete files.
* gnu/packages/patches/mit-krb5-CVE-2015-8629.patch,
  gnu/packages/patches/mit-krb5-CVE-2015-8630.patch,
  gnu/packages/patches/mit-krb5-CVE-2015-8631.patch,
  gnu/packages/patches/mit-krb5-init-context-null-spnego.patch: New files.
* gnu-system.am (dist_patch_DATA): Adjust accordingly.
* gnu/packages/mit-krb5.scm (mit-krb5): Update to 1.13.3.
  [source]: Update URI to download conventional .tar.gz file.  Add patches.
  [native-inputs]: Remove old patches-as-inputs.
  [arguments]: Remove hacks needed to cope with the older unconventional
  tarball that contained an inner source tarball and signature: Remove
  #:modules argument, and the custom 'unpack' and 'apply-patches' phases.

10 files changed, 757 insertions, 1600 deletions

diff --git a/gnu/packages/patches/mit-krb5-CVE-2015-2695-pt1.patch b/gnu/packages/patches/mit-krb5-CVE-2015-2695-pt1.patch
deleted file mode 100644
index 0f5603e228..0000000000
--- a/gnu/packages/patches/mit-krb5-CVE-2015-2695-pt1.patch
+++ /dev/null
@@ -1,569 +0,0 @@
-Copied from Debian.
-
-From b813d5811432faed844a2dfd3daecde914978f2c Mon Sep 17 00:00:00 2001
-From: Nicolas Williams <nico@twosigma.com>
-Date: Mon, 14 Sep 2015 12:27:52 -0400
-Subject: Fix SPNEGO context aliasing bugs [CVE-2015-2695]
-
-The SPNEGO mechanism currently replaces its context handle with the
-mechanism context handle upon establishment, under the assumption that
-most GSS functions are only called after context establishment.  This
-assumption is incorrect, and can lead to aliasing violations for some
-programs.  Maintain the SPNEGO context structure after context
-establishment and refer to it in all GSS methods.  Add initiate and
-opened flags to the SPNEGO context structure for use in
-gss_inquire_context() prior to context establishment.
-
-CVE-2015-2695:
-
-In MIT krb5 1.5 and later, applications which call
-gss_inquire_context() on a partially-established SPNEGO context can
-cause the GSS-API library to read from a pointer using the wrong type,
-generally causing a process crash.  This bug may go unnoticed, because
-the most common SPNEGO authentication scenario establishes the context
-after just one call to gss_accept_sec_context().  Java server
-applications using the native JGSS provider are vulnerable to this
-bug.  A carefully crafted SPNEGO packet might allow the
-gss_inquire_context() call to succeed with attacker-determined
-results, but applications should not make access control decisions
-based on gss_inquire_context() results prior to context establishment.
-
-    CVSSv2 Vector: AV:N/AC:M/Au:N/C:N/I:N/A:C/E:POC/RL:OF/RC:C
-
-[ghudson@mit.edu: several bugfixes, style changes, and edge-case
-behavior changes; commit message and CVE description]
-
-ticket: 8244
-target_version: 1.14
-tags: pullup
-
-(cherry picked from commit b51b33f2bc5d1497ddf5bd107f791c101695000d)
-Patch-Category: upstream
----
- src/lib/gssapi/spnego/gssapiP_spnego.h |   2 +
- src/lib/gssapi/spnego/spnego_mech.c    | 254 ++++++++++++++++++++++++---------
- 2 files changed, 192 insertions(+), 64 deletions(-)
-
-diff --git a/src/lib/gssapi/spnego/gssapiP_spnego.h b/src/lib/gssapi/spnego/gssapiP_spnego.h
-index bc23f56..8e05736 100644
---- a/src/lib/gssapi/spnego/gssapiP_spnego.h
-+++ b/src/lib/gssapi/spnego/gssapiP_spnego.h
-@@ -102,6 +102,8 @@ typedef struct {
- 	int firstpass;
- 	int mech_complete;
- 	int nego_done;
-+	int initiate;
-+	int opened;
- 	OM_uint32 ctx_flags;
- 	gss_name_t internal_name;
- 	gss_OID actual_mech;
-diff --git a/src/lib/gssapi/spnego/spnego_mech.c b/src/lib/gssapi/spnego/spnego_mech.c
-index 6e39c37..a1072b0 100644
---- a/src/lib/gssapi/spnego/spnego_mech.c
-+++ b/src/lib/gssapi/spnego/spnego_mech.c
-@@ -104,7 +104,7 @@ static OM_uint32 get_negotiable_mechs(OM_uint32 *, spnego_gss_cred_id_t,
- 				      gss_cred_usage_t, gss_OID_set *);
- static void release_spnego_ctx(spnego_gss_ctx_id_t *);
- static void check_spnego_options(spnego_gss_ctx_id_t);
--static spnego_gss_ctx_id_t create_spnego_ctx(void);
-+static spnego_gss_ctx_id_t create_spnego_ctx(int);
- static int put_mech_set(gss_OID_set mechSet, gss_buffer_t buf);
- static int put_input_token(unsigned char **, gss_buffer_t, unsigned int);
- static int put_mech_oid(unsigned char **, gss_OID_const, unsigned int);
-@@ -442,7 +442,7 @@ check_spnego_options(spnego_gss_ctx_id_t spnego_ctx)
- }
- 
- static spnego_gss_ctx_id_t
--create_spnego_ctx(void)
-+create_spnego_ctx(int initiate)
- {
- 	spnego_gss_ctx_id_t spnego_ctx = NULL;
- 	spnego_ctx = (spnego_gss_ctx_id_t)
-@@ -465,6 +465,8 @@ create_spnego_ctx(void)
- 	spnego_ctx->mic_rcvd = 0;
- 	spnego_ctx->mech_complete = 0;
- 	spnego_ctx->nego_done = 0;
-+	spnego_ctx->opened = 0;
-+	spnego_ctx->initiate = initiate;
- 	spnego_ctx->internal_name = GSS_C_NO_NAME;
- 	spnego_ctx->actual_mech = GSS_C_NO_OID;
- 
-@@ -630,7 +632,7 @@ init_ctx_new(OM_uint32 *minor_status,
- 	OM_uint32 ret;
- 	spnego_gss_ctx_id_t sc = NULL;
- 
--	sc = create_spnego_ctx();
-+	sc = create_spnego_ctx(1);
- 	if (sc == NULL)
- 		return GSS_S_FAILURE;
- 
-@@ -647,10 +649,7 @@ init_ctx_new(OM_uint32 *minor_status,
- 		ret = GSS_S_FAILURE;
- 		goto cleanup;
- 	}
--	/*
--	 * The actual context is not yet determined, set the output
--	 * context handle to refer to the spnego context itself.
--	 */
-+
- 	sc->ctx_handle = GSS_C_NO_CONTEXT;
- 	*ctx = (gss_ctx_id_t)sc;
- 	sc = NULL;
-@@ -1091,16 +1090,11 @@ cleanup:
- 	}
- 	gss_release_buffer(&tmpmin, &mechtok_out);
- 	if (ret == GSS_S_COMPLETE) {
--		/*
--		 * Now, switch the output context to refer to the
--		 * negotiated mechanism's context.
--		 */
--		*context_handle = (gss_ctx_id_t)spnego_ctx->ctx_handle;
-+		spnego_ctx->opened = 1;
- 		if (actual_mech != NULL)
- 			*actual_mech = spnego_ctx->actual_mech;
- 		if (ret_flags != NULL)
- 			*ret_flags = spnego_ctx->ctx_flags;
--		release_spnego_ctx(&spnego_ctx);
- 	} else if (ret != GSS_S_CONTINUE_NEEDED) {
- 		if (spnego_ctx != NULL) {
- 			gss_delete_sec_context(&tmpmin,
-@@ -1344,7 +1338,7 @@ acc_ctx_hints(OM_uint32 *minor_status,
- 	if (ret != GSS_S_COMPLETE)
- 		goto cleanup;
- 
--	sc = create_spnego_ctx();
-+	sc = create_spnego_ctx(0);
- 	if (sc == NULL) {
- 		ret = GSS_S_FAILURE;
- 		goto cleanup;
-@@ -1426,7 +1420,7 @@ acc_ctx_new(OM_uint32 *minor_status,
- 		gss_release_buffer(&tmpmin, &sc->DER_mechTypes);
- 		assert(mech_wanted != GSS_C_NO_OID);
- 	} else
--		sc = create_spnego_ctx();
-+		sc = create_spnego_ctx(0);
- 	if (sc == NULL) {
- 		ret = GSS_S_FAILURE;
- 		*return_token = NO_TOKEN_SEND;
-@@ -1809,13 +1803,12 @@ cleanup:
- 			ret = GSS_S_FAILURE;
- 	}
- 	if (ret == GSS_S_COMPLETE) {
--		*context_handle = (gss_ctx_id_t)sc->ctx_handle;
-+		sc->opened = 1;
- 		if (sc->internal_name != GSS_C_NO_NAME &&
- 		    src_name != NULL) {
- 			*src_name = sc->internal_name;
- 			sc->internal_name = GSS_C_NO_NAME;
- 		}
--		release_spnego_ctx(&sc);
- 	} else if (ret != GSS_S_CONTINUE_NEEDED) {
- 		if (sc != NULL) {
- 			gss_delete_sec_context(&tmpmin, &sc->ctx_handle,
-@@ -2128,8 +2121,13 @@ spnego_gss_unwrap(
- 		gss_qop_t *qop_state)
- {
- 	OM_uint32 ret;
-+	spnego_gss_ctx_id_t sc = (spnego_gss_ctx_id_t)context_handle;
-+
-+	if (sc->ctx_handle == GSS_C_NO_CONTEXT)
-+		return (GSS_S_NO_CONTEXT);
-+
- 	ret = gss_unwrap(minor_status,
--			context_handle,
-+			sc->ctx_handle,
- 			input_message_buffer,
- 			output_message_buffer,
- 			conf_state,
-@@ -2149,8 +2147,13 @@ spnego_gss_wrap(
- 		gss_buffer_t output_message_buffer)
- {
- 	OM_uint32 ret;
-+	spnego_gss_ctx_id_t sc = (spnego_gss_ctx_id_t)context_handle;
-+
-+	if (sc->ctx_handle == GSS_C_NO_CONTEXT)
-+		return (GSS_S_NO_CONTEXT);
-+
- 	ret = gss_wrap(minor_status,
--		    context_handle,
-+		    sc->ctx_handle,
- 		    conf_req_flag,
- 		    qop_req,
- 		    input_message_buffer,
-@@ -2167,8 +2170,14 @@ spnego_gss_process_context_token(
- 				const gss_buffer_t token_buffer)
- {
- 	OM_uint32 ret;
-+	spnego_gss_ctx_id_t sc = (spnego_gss_ctx_id_t)context_handle;
-+
-+	/* SPNEGO doesn't have its own context tokens. */
-+	if (!sc->opened)
-+		return (GSS_S_DEFECTIVE_TOKEN);
-+
- 	ret = gss_process_context_token(minor_status,
--					context_handle,
-+					sc->ctx_handle,
- 					token_buffer);
- 
- 	return (ret);
-@@ -2192,19 +2201,9 @@ spnego_gss_delete_sec_context(
- 	if (*ctx == NULL)
- 		return (GSS_S_COMPLETE);
- 
--	/*
--	 * If this is still an SPNEGO mech, release it locally.
--	 */
--	if ((*ctx)->magic_num == SPNEGO_MAGIC_ID) {
--		(void) gss_delete_sec_context(minor_status,
--				    &(*ctx)->ctx_handle,
--				    output_token);
--		(void) release_spnego_ctx(ctx);
--	} else {
--		ret = gss_delete_sec_context(minor_status,
--				    context_handle,
--				    output_token);
--	}
-+	(void) gss_delete_sec_context(minor_status, &(*ctx)->ctx_handle,
-+				      output_token);
-+	(void) release_spnego_ctx(ctx);
- 
- 	return (ret);
- }
-@@ -2216,8 +2215,13 @@ spnego_gss_context_time(
- 			OM_uint32	*time_rec)
- {
- 	OM_uint32 ret;
-+	spnego_gss_ctx_id_t sc = (spnego_gss_ctx_id_t)context_handle;
-+
-+	if (sc->ctx_handle == GSS_C_NO_CONTEXT)
-+		return (GSS_S_NO_CONTEXT);
-+
- 	ret = gss_context_time(minor_status,
--			    context_handle,
-+			    sc->ctx_handle,
- 			    time_rec);
- 	return (ret);
- }
-@@ -2229,9 +2233,20 @@ spnego_gss_export_sec_context(
- 			    gss_buffer_t interprocess_token)
- {
- 	OM_uint32 ret;
-+	spnego_gss_ctx_id_t sc = *(spnego_gss_ctx_id_t *)context_handle;
-+
-+	/* We don't currently support exporting partially established
-+	 * contexts. */
-+	if (!sc->opened)
-+		return GSS_S_UNAVAILABLE;
-+
- 	ret = gss_export_sec_context(minor_status,
--				    context_handle,
-+				    &sc->ctx_handle,
- 				    interprocess_token);
-+	if (sc->ctx_handle == GSS_C_NO_CONTEXT) {
-+		release_spnego_ctx(&sc);
-+		*context_handle = GSS_C_NO_CONTEXT;
-+	}
- 	return (ret);
- }
- 
-@@ -2241,11 +2256,12 @@ spnego_gss_import_sec_context(
- 	const gss_buffer_t	interprocess_token,
- 	gss_ctx_id_t		*context_handle)
- {
--	OM_uint32 ret;
--	ret = gss_import_sec_context(minor_status,
--				    interprocess_token,
--				    context_handle);
--	return (ret);
-+	/*
-+	 * Until we implement partial context exports, there are no SPNEGO
-+	 * exported context tokens, only tokens for underlying mechs.  So just
-+	 * return an error for now.
-+	 */
-+	return GSS_S_UNAVAILABLE;
- }
- #endif /* LEAN_CLIENT */
- 
-@@ -2262,16 +2278,48 @@ spnego_gss_inquire_context(
- 			int		*opened)
- {
- 	OM_uint32 ret = GSS_S_COMPLETE;
-+	spnego_gss_ctx_id_t sc = (spnego_gss_ctx_id_t)context_handle;
-+
-+	if (src_name != NULL)
-+		*src_name = GSS_C_NO_NAME;
-+	if (targ_name != NULL)
-+		*targ_name = GSS_C_NO_NAME;
-+	if (lifetime_rec != NULL)
-+		*lifetime_rec = 0;
-+	if (mech_type != NULL)
-+		*mech_type = (gss_OID)gss_mech_spnego;
-+	if (ctx_flags != NULL)
-+		*ctx_flags = 0;
-+	if (locally_initiated != NULL)
-+		*locally_initiated = sc->initiate;
-+	if (opened != NULL)
-+		*opened = sc->opened;
-+
-+	if (sc->ctx_handle != GSS_C_NO_CONTEXT) {
-+		ret = gss_inquire_context(minor_status, sc->ctx_handle,
-+					  src_name, targ_name, lifetime_rec,
-+					  mech_type, ctx_flags, NULL, NULL);
-+	}
- 
--	ret = gss_inquire_context(minor_status,
--				context_handle,
--				src_name,
--				targ_name,
--				lifetime_rec,
--				mech_type,
--				ctx_flags,
--				locally_initiated,
--				opened);
-+	if (!sc->opened) {
-+		/*
-+		 * We are still doing SPNEGO negotiation, so report SPNEGO as
-+		 * the OID.  After negotiation is complete we will report the
-+		 * underlying mechanism OID.
-+		 */
-+		if (mech_type != NULL)
-+			*mech_type = (gss_OID)gss_mech_spnego;
-+
-+		/*
-+		 * Remove flags we don't support with partially-established
-+		 * contexts.  (Change this to keep GSS_C_TRANS_FLAG if we add
-+		 * support for exporting partial SPNEGO contexts.)
-+		 */
-+		if (ctx_flags != NULL) {
-+			*ctx_flags &= ~GSS_C_PROT_READY_FLAG;
-+			*ctx_flags &= ~GSS_C_TRANS_FLAG;
-+		}
-+	}
- 
- 	return (ret);
- }
-@@ -2286,8 +2334,13 @@ spnego_gss_wrap_size_limit(
- 	OM_uint32	*max_input_size)
- {
- 	OM_uint32 ret;
-+	spnego_gss_ctx_id_t sc = (spnego_gss_ctx_id_t)context_handle;
-+
-+	if (sc->ctx_handle == GSS_C_NO_CONTEXT)
-+		return (GSS_S_NO_CONTEXT);
-+
- 	ret = gss_wrap_size_limit(minor_status,
--				context_handle,
-+				sc->ctx_handle,
- 				conf_req_flag,
- 				qop_req,
- 				req_output_size,
-@@ -2304,8 +2357,13 @@ spnego_gss_get_mic(
- 		gss_buffer_t message_token)
- {
- 	OM_uint32 ret;
-+	spnego_gss_ctx_id_t sc = (spnego_gss_ctx_id_t)context_handle;
-+
-+	if (sc->ctx_handle == GSS_C_NO_CONTEXT)
-+		return (GSS_S_NO_CONTEXT);
-+
- 	ret = gss_get_mic(minor_status,
--		    context_handle,
-+		    sc->ctx_handle,
- 		    qop_req,
- 		    message_buffer,
- 		    message_token);
-@@ -2321,8 +2379,13 @@ spnego_gss_verify_mic(
- 		gss_qop_t *qop_state)
- {
- 	OM_uint32 ret;
-+	spnego_gss_ctx_id_t sc = (spnego_gss_ctx_id_t)context_handle;
-+
-+	if (sc->ctx_handle == GSS_C_NO_CONTEXT)
-+		return (GSS_S_NO_CONTEXT);
-+
- 	ret = gss_verify_mic(minor_status,
--			    context_handle,
-+			    sc->ctx_handle,
- 			    msg_buffer,
- 			    token_buffer,
- 			    qop_state);
-@@ -2337,8 +2400,14 @@ spnego_gss_inquire_sec_context_by_oid(
- 		gss_buffer_set_t *data_set)
- {
- 	OM_uint32 ret;
-+	spnego_gss_ctx_id_t sc = (spnego_gss_ctx_id_t)context_handle;
-+
-+	/* There are no SPNEGO-specific OIDs for this function. */
-+	if (sc->ctx_handle == GSS_C_NO_CONTEXT)
-+		return (GSS_S_UNAVAILABLE);
-+
- 	ret = gss_inquire_sec_context_by_oid(minor_status,
--			    context_handle,
-+			    sc->ctx_handle,
- 			    desired_object,
- 			    data_set);
- 	return (ret);
-@@ -2407,8 +2476,15 @@ spnego_gss_set_sec_context_option(
- 		const gss_buffer_t value)
- {
- 	OM_uint32 ret;
-+	spnego_gss_ctx_id_t sc = (spnego_gss_ctx_id_t)*context_handle;
-+
-+	/* There are no SPNEGO-specific OIDs for this function, and we cannot
-+	 * construct an empty SPNEGO context with it. */
-+	if (sc == NULL || sc->ctx_handle == GSS_C_NO_CONTEXT)
-+		return (GSS_S_UNAVAILABLE);
-+
- 	ret = gss_set_sec_context_option(minor_status,
--			    context_handle,
-+			    &sc->ctx_handle,
- 			    desired_object,
- 			    value);
- 	return (ret);
-@@ -2425,8 +2501,13 @@ spnego_gss_wrap_aead(OM_uint32 *minor_status,
- 		     gss_buffer_t output_message_buffer)
- {
- 	OM_uint32 ret;
-+	spnego_gss_ctx_id_t sc = (spnego_gss_ctx_id_t)context_handle;
-+
-+	if (sc->ctx_handle == GSS_C_NO_CONTEXT)
-+		return (GSS_S_NO_CONTEXT);
-+
- 	ret = gss_wrap_aead(minor_status,
--			    context_handle,
-+			    sc->ctx_handle,
- 			    conf_req_flag,
- 			    qop_req,
- 			    input_assoc_buffer,
-@@ -2447,8 +2528,13 @@ spnego_gss_unwrap_aead(OM_uint32 *minor_status,
- 		       gss_qop_t *qop_state)
- {
- 	OM_uint32 ret;
-+	spnego_gss_ctx_id_t sc = (spnego_gss_ctx_id_t)context_handle;
-+
-+	if (sc->ctx_handle == GSS_C_NO_CONTEXT)
-+		return (GSS_S_NO_CONTEXT);
-+
- 	ret = gss_unwrap_aead(minor_status,
--			      context_handle,
-+			      sc->ctx_handle,
- 			      input_message_buffer,
- 			      input_assoc_buffer,
- 			      output_payload_buffer,
-@@ -2467,8 +2553,13 @@ spnego_gss_wrap_iov(OM_uint32 *minor_status,
- 		    int iov_count)
- {
- 	OM_uint32 ret;
-+	spnego_gss_ctx_id_t sc = (spnego_gss_ctx_id_t)context_handle;
-+
-+	if (sc->ctx_handle == GSS_C_NO_CONTEXT)
-+		return (GSS_S_NO_CONTEXT);
-+
- 	ret = gss_wrap_iov(minor_status,
--			   context_handle,
-+			   sc->ctx_handle,
- 			   conf_req_flag,
- 			   qop_req,
- 			   conf_state,
-@@ -2486,8 +2577,13 @@ spnego_gss_unwrap_iov(OM_uint32 *minor_status,
- 		      int iov_count)
- {
- 	OM_uint32 ret;
-+	spnego_gss_ctx_id_t sc = (spnego_gss_ctx_id_t)context_handle;
-+
-+	if (sc->ctx_handle == GSS_C_NO_CONTEXT)
-+		return (GSS_S_NO_CONTEXT);
-+
- 	ret = gss_unwrap_iov(minor_status,
--			     context_handle,
-+			     sc->ctx_handle,
- 			     conf_state,
- 			     qop_state,
- 			     iov,
-@@ -2505,8 +2601,13 @@ spnego_gss_wrap_iov_length(OM_uint32 *minor_status,
- 			   int iov_count)
- {
- 	OM_uint32 ret;
-+	spnego_gss_ctx_id_t sc = (spnego_gss_ctx_id_t)context_handle;
-+
-+	if (sc->ctx_handle == GSS_C_NO_CONTEXT)
-+		return (GSS_S_NO_CONTEXT);
-+
- 	ret = gss_wrap_iov_length(minor_status,
--				  context_handle,
-+				  sc->ctx_handle,
- 				  conf_req_flag,
- 				  qop_req,
- 				  conf_state,
-@@ -2523,8 +2624,13 @@ spnego_gss_complete_auth_token(
- 		gss_buffer_t input_message_buffer)
- {
- 	OM_uint32 ret;
-+	spnego_gss_ctx_id_t sc = (spnego_gss_ctx_id_t)context_handle;
-+
-+	if (sc->ctx_handle == GSS_C_NO_CONTEXT)
-+		return (GSS_S_UNAVAILABLE);
-+
- 	ret = gss_complete_auth_token(minor_status,
--				      context_handle,
-+				      sc->ctx_handle,
- 				      input_message_buffer);
- 	return (ret);
- }
-@@ -2776,8 +2882,13 @@ spnego_gss_pseudo_random(OM_uint32 *minor_status,
- 			 gss_buffer_t prf_out)
- {
- 	OM_uint32 ret;
-+	spnego_gss_ctx_id_t sc = (spnego_gss_ctx_id_t)context;
-+
-+	if (sc->ctx_handle == GSS_C_NO_CONTEXT)
-+		return (GSS_S_NO_CONTEXT);
-+
- 	ret = gss_pseudo_random(minor_status,
--				context,
-+				sc->ctx_handle,
- 				prf_key,
- 				prf_in,
- 				desired_output_len,
-@@ -2918,7 +3029,12 @@ spnego_gss_get_mic_iov(OM_uint32 *minor_status, gss_ctx_id_t context_handle,
- 		       gss_qop_t qop_req, gss_iov_buffer_desc *iov,
- 		       int iov_count)
- {
--    return gss_get_mic_iov(minor_status, context_handle, qop_req, iov,
-+    spnego_gss_ctx_id_t sc = (spnego_gss_ctx_id_t)context_handle;
-+
-+    if (sc->ctx_handle == GSS_C_NO_CONTEXT)
-+	    return (GSS_S_NO_CONTEXT);
-+
-+    return gss_get_mic_iov(minor_status, sc->ctx_handle, qop_req, iov,
- 			   iov_count);
- }
- 
-@@ -2927,7 +3043,12 @@ spnego_gss_verify_mic_iov(OM_uint32 *minor_status, gss_ctx_id_t context_handle,
- 			  gss_qop_t *qop_state, gss_iov_buffer_desc *iov,
- 			  int iov_count)
- {
--    return gss_verify_mic_iov(minor_status, context_handle, qop_state, iov,
-+    spnego_gss_ctx_id_t sc = (spnego_gss_ctx_id_t)context_handle;
-+
-+    if (sc->ctx_handle == GSS_C_NO_CONTEXT)
-+	    return (GSS_S_NO_CONTEXT);
-+
-+    return gss_verify_mic_iov(minor_status, sc->ctx_handle, qop_state, iov,
- 			      iov_count);
- }
- 
-@@ -2936,7 +3057,12 @@ spnego_gss_get_mic_iov_length(OM_uint32 *minor_status,
- 			      gss_ctx_id_t context_handle, gss_qop_t qop_req,
- 			      gss_iov_buffer_desc *iov, int iov_count)
- {
--    return gss_get_mic_iov_length(minor_status, context_handle, qop_req, iov,
-+    spnego_gss_ctx_id_t sc = (spnego_gss_ctx_id_t)context_handle;
-+
-+    if (sc->ctx_handle == GSS_C_NO_CONTEXT)
-+	    return (GSS_S_NO_CONTEXT);
-+
-+    return gss_get_mic_iov_length(minor_status, sc->ctx_handle, qop_req, iov,
- 				  iov_count);
- }
- 
diff --git a/gnu/packages/patches/mit-krb5-CVE-2015-2695-pt2.patch b/gnu/packages/patches/mit-krb5-CVE-2015-2695-pt2.patch
deleted file mode 100644
index aa9fcfa0dd..0000000000
--- a/gnu/packages/patches/mit-krb5-CVE-2015-2695-pt2.patch
+++ /dev/null
@@ -1,65 +0,0 @@
-Copied from Debian.
-
-From 18c512ebdcc5cacc777e9dbcc6817f83c301ad93 Mon Sep 17 00:00:00 2001
-From: Greg Hudson <ghudson@mit.edu>
-Date: Wed, 4 Nov 2015 21:29:10 -0500
-Subject: Fix SPNEGO context import
-
-The patches for CVE-2015-2695 did not implement a SPNEGO
-gss_import_sec_context() function, under the erroneous belief than an
-exported SPNEGO context would be tagged with the underlying context
-mechanism.  Implement it now to allow SPNEGO contexts to be
-successfully exported and imported after establishment.
-
-ticket: 8273
-(cherry picked from commit fbb565f913c52eba9bea82f1694aba7a8c90e93d)
-
-Patch-Category: upstream
----
- src/lib/gssapi/spnego/spnego_mech.c | 33 +++++++++++++++++++++++++++------
- 1 file changed, 27 insertions(+), 6 deletions(-)
-
-diff --git a/src/lib/gssapi/spnego/spnego_mech.c b/src/lib/gssapi/spnego/spnego_mech.c
-index a1072b0..02284a1 100644
---- a/src/lib/gssapi/spnego/spnego_mech.c
-+++ b/src/lib/gssapi/spnego/spnego_mech.c
-@@ -2256,12 +2256,33 @@ spnego_gss_import_sec_context(
- 	const gss_buffer_t	interprocess_token,
- 	gss_ctx_id_t		*context_handle)
- {
--	/*
--	 * Until we implement partial context exports, there are no SPNEGO
--	 * exported context tokens, only tokens for underlying mechs.  So just
--	 * return an error for now.
--	 */
--	return GSS_S_UNAVAILABLE;
-+	OM_uint32 ret, tmpmin;
-+	gss_ctx_id_t mctx;
-+	spnego_gss_ctx_id_t sc;
-+	int initiate, opened;
-+
-+	ret = gss_import_sec_context(minor_status, interprocess_token, &mctx);
-+	if (ret != GSS_S_COMPLETE)
-+		return ret;
-+
-+	ret = gss_inquire_context(&tmpmin, mctx, NULL, NULL, NULL, NULL, NULL,
-+				  &initiate, &opened);
-+	if (ret != GSS_S_COMPLETE || !opened) {
-+		/* We don't currently support importing partially established
-+		 * contexts. */
-+		(void) gss_delete_sec_context(&tmpmin, &mctx, GSS_C_NO_BUFFER);
-+		return GSS_S_FAILURE;
-+	}
-+
-+	sc = create_spnego_ctx(initiate);
-+	if (sc == NULL) {
-+		(void) gss_delete_sec_context(&tmpmin, &mctx, GSS_C_NO_BUFFER);
-+		return GSS_S_FAILURE;
-+	}
-+	sc->ctx_handle = mctx;
-+	sc->opened = 1;
-+	*context_handle = (gss_ctx_id_t)sc;
-+	return GSS_S_COMPLETE;
- }
- #endif /* LEAN_CLIENT */
- 
diff --git a/gnu/packages/patches/mit-krb5-CVE-2015-2696.patch b/gnu/packages/patches/mit-krb5-CVE-2015-2696.patch
deleted file mode 100644
index 7b4b1d71ab..0000000000
--- a/gnu/packages/patches/mit-krb5-CVE-2015-2696.patch
+++ /dev/null
@@ -1,736 +0,0 @@
-Copied from Debian.
-
-From ebea85358bc72ec20c53130d83acb93f95853b76 Mon Sep 17 00:00:00 2001
-From: Nicolas Williams <nico@twosigma.com>
-Date: Mon, 14 Sep 2015 12:28:36 -0400
-Subject: Fix IAKERB context aliasing bugs [CVE-2015-2696]
-
-The IAKERB mechanism currently replaces its context handle with the
-krb5 mechanism handle upon establishment, under the assumption that
-most GSS functions are only called after context establishment.  This
-assumption is incorrect, and can lead to aliasing violations for some
-programs.  Maintain the IAKERB context structure after context
-establishment and add new IAKERB entry points to refer to it with that
-type.  Add initiate and established flags to the IAKERB context
-structure for use in gss_inquire_context() prior to context
-establishment.
-
-CVE-2015-2696:
-
-In MIT krb5 1.9 and later, applications which call
-gss_inquire_context() on a partially-established IAKERB context can
-cause the GSS-API library to read from a pointer using the wrong type,
-generally causing a process crash.  Java server applications using the
-native JGSS provider are vulnerable to this bug.  A carefully crafted
-IAKERB packet might allow the gss_inquire_context() call to succeed
-with attacker-determined results, but applications should not make
-access control decisions based on gss_inquire_context() results prior
-to context establishment.
-
-    CVSSv2 Vector: AV:N/AC:M/Au:N/C:N/I:N/A:C/E:POC/RL:OF/RC:C
-
-[ghudson@mit.edu: several bugfixes, style changes, and edge-case
-behavior changes; commit message and CVE description]
-
-ticket: 8244
-target_version: 1.14
-tags: pullup
-
-(cherry picked from commit e04f0283516e80d2f93366e0d479d13c9b5c8c2a)
-Patch-Category: upstream
----
- src/lib/gssapi/krb5/gssapiP_krb5.h | 114 ++++++++++++
- src/lib/gssapi/krb5/gssapi_krb5.c  | 105 +++++++++--
- src/lib/gssapi/krb5/iakerb.c       | 351 +++++++++++++++++++++++++++++++++----
- 3 files changed, 529 insertions(+), 41 deletions(-)
-
-diff --git a/src/lib/gssapi/krb5/gssapiP_krb5.h b/src/lib/gssapi/krb5/gssapiP_krb5.h
-index a0e8625..05dc321 100644
---- a/src/lib/gssapi/krb5/gssapiP_krb5.h
-+++ b/src/lib/gssapi/krb5/gssapiP_krb5.h
-@@ -620,6 +620,21 @@ OM_uint32 KRB5_CALLCONV krb5_gss_accept_sec_context_ext
- );
- #endif /* LEAN_CLIENT */
- 
-+OM_uint32 KRB5_CALLCONV krb5_gss_inquire_sec_context_by_oid
-+(OM_uint32*,       /* minor_status */
-+ const gss_ctx_id_t,
-+ /* context_handle */
-+ const gss_OID,    /* desired_object */
-+ gss_buffer_set_t* /* data_set */
-+);
-+
-+OM_uint32 KRB5_CALLCONV krb5_gss_set_sec_context_option
-+(OM_uint32*,       /* minor_status */
-+ gss_ctx_id_t*,    /* context_handle */
-+ const gss_OID,    /* desired_object */
-+ const gss_buffer_t/* value */
-+);
-+
- OM_uint32 KRB5_CALLCONV krb5_gss_process_context_token
- (OM_uint32*,       /* minor_status */
-  gss_ctx_id_t,     /* context_handle */
-@@ -1301,6 +1316,105 @@ OM_uint32 KRB5_CALLCONV
- krb5_gss_import_cred(OM_uint32 *minor_status, gss_buffer_t token,
-                      gss_cred_id_t *cred_handle);
- 
-+OM_uint32 KRB5_CALLCONV
-+iakerb_gss_process_context_token(OM_uint32 *minor_status,
-+                                 const gss_ctx_id_t context_handle,
-+                                 const gss_buffer_t token_buffer);
-+
-+OM_uint32 KRB5_CALLCONV
-+iakerb_gss_context_time(OM_uint32 *minor_status, gss_ctx_id_t context_handle,
-+                        OM_uint32 *time_rec);
-+
-+OM_uint32 KRB5_CALLCONV
-+iakerb_gss_inquire_context(OM_uint32 *minor_status,
-+                           gss_ctx_id_t context_handle, gss_name_t *src_name,
-+                           gss_name_t *targ_name, OM_uint32 *lifetime_rec,
-+                           gss_OID *mech_type, OM_uint32 *ctx_flags,
-+                           int *locally_initiated, int *opened);
-+
-+OM_uint32 KRB5_CALLCONV
-+iakerb_gss_get_mic(OM_uint32 *minor_status, gss_ctx_id_t context_handle,
-+                   gss_qop_t qop_req, gss_buffer_t message_buffer,
-+                   gss_buffer_t message_token);
-+
-+OM_uint32 KRB5_CALLCONV
-+iakerb_gss_get_mic_iov(OM_uint32 *minor_status, gss_ctx_id_t context_handle,
-+                       gss_qop_t qop_req, gss_iov_buffer_desc *iov,
-+                       int iov_count);
-+
-+OM_uint32 KRB5_CALLCONV
-+iakerb_gss_get_mic_iov_length(OM_uint32 *minor_status,
-+                              gss_ctx_id_t context_handle, gss_qop_t qop_req,
-+                              gss_iov_buffer_desc *iov, int iov_count);
-+
-+OM_uint32 KRB5_CALLCONV
-+iakerb_gss_verify_mic(OM_uint32 *minor_status, gss_ctx_id_t context_handle,
-+                      gss_buffer_t msg_buffer, gss_buffer_t token_buffer,
-+                      gss_qop_t *qop_state);
-+
-+OM_uint32 KRB5_CALLCONV
-+iakerb_gss_verify_mic_iov(OM_uint32 *minor_status, gss_ctx_id_t context_handle,
-+                          gss_qop_t *qop_state, gss_iov_buffer_desc *iov,
-+                          int iov_count);
-+
-+OM_uint32 KRB5_CALLCONV
-+iakerb_gss_wrap(OM_uint32 *minor_status, gss_ctx_id_t context_handle,
-+                int conf_req_flag, gss_qop_t qop_req,
-+                gss_buffer_t input_message_buffer, int *conf_state,
-+                gss_buffer_t output_message_buffer);
-+
-+OM_uint32 KRB5_CALLCONV
-+iakerb_gss_wrap_iov(OM_uint32 *minor_status, gss_ctx_id_t context_handle,
-+                    int conf_req_flag, gss_qop_t qop_req, int *conf_state,
-+                    gss_iov_buffer_desc *iov, int iov_count);
-+
-+OM_uint32 KRB5_CALLCONV
-+iakerb_gss_wrap_iov_length(OM_uint32 *minor_status,
-+                           gss_ctx_id_t context_handle, int conf_req_flag,
-+                           gss_qop_t qop_req, int *conf_state,
-+                           gss_iov_buffer_desc *iov, int iov_count);
-+
-+OM_uint32 KRB5_CALLCONV
-+iakerb_gss_unwrap(OM_uint32 *minor_status, gss_ctx_id_t context_handle,
-+                  gss_buffer_t input_message_buffer,
-+                  gss_buffer_t output_message_buffer, int *conf_state,
-+                  gss_qop_t *qop_state);
-+
-+OM_uint32 KRB5_CALLCONV
-+iakerb_gss_unwrap_iov(OM_uint32 *minor_status, gss_ctx_id_t context_handle,
-+                      int *conf_state, gss_qop_t *qop_state,
-+                      gss_iov_buffer_desc *iov, int iov_count);
-+
-+OM_uint32 KRB5_CALLCONV
-+iakerb_gss_wrap_size_limit(OM_uint32 *minor_status,
-+                           gss_ctx_id_t context_handle, int conf_req_flag,
-+                           gss_qop_t qop_req, OM_uint32 req_output_size,
-+                           OM_uint32 *max_input_size);
-+
-+#ifndef LEAN_CLIENT
-+OM_uint32 KRB5_CALLCONV
-+iakerb_gss_export_sec_context(OM_uint32 *minor_status,
-+                              gss_ctx_id_t *context_handle,
-+                              gss_buffer_t interprocess_token);
-+#endif /* LEAN_CLIENT */
-+
-+OM_uint32 KRB5_CALLCONV
-+iakerb_gss_inquire_sec_context_by_oid(OM_uint32 *minor_status,
-+                                      const gss_ctx_id_t context_handle,
-+                                      const gss_OID desired_object,
-+                                      gss_buffer_set_t *data_set);
-+
-+OM_uint32 KRB5_CALLCONV
-+iakerb_gss_set_sec_context_option(OM_uint32 *minor_status,
-+                                  gss_ctx_id_t *context_handle,
-+                                  const gss_OID desired_object,
-+                                  const gss_buffer_t value);
-+
-+OM_uint32 KRB5_CALLCONV
-+iakerb_gss_pseudo_random(OM_uint32 *minor_status, gss_ctx_id_t context_handle,
-+                         int prf_key, const gss_buffer_t prf_in,
-+                         ssize_t desired_output_len, gss_buffer_t prf_out);
-+
- /* Magic string to identify exported krb5 GSS credentials.  Increment this if
-  * the format changes. */
- #define CRED_EXPORT_MAGIC "K5C1"
-diff --git a/src/lib/gssapi/krb5/gssapi_krb5.c b/src/lib/gssapi/krb5/gssapi_krb5.c
-index 77b7fff..9a23656 100644
---- a/src/lib/gssapi/krb5/gssapi_krb5.c
-+++ b/src/lib/gssapi/krb5/gssapi_krb5.c
-@@ -345,7 +345,7 @@ static struct {
-     }
- };
- 
--static OM_uint32 KRB5_CALLCONV
-+OM_uint32 KRB5_CALLCONV
- krb5_gss_inquire_sec_context_by_oid (OM_uint32 *minor_status,
-                                      const gss_ctx_id_t context_handle,
-                                      const gss_OID desired_object,
-@@ -459,7 +459,7 @@ static struct {
- };
- #endif
- 
--static OM_uint32 KRB5_CALLCONV
-+OM_uint32 KRB5_CALLCONV
- krb5_gss_set_sec_context_option (OM_uint32 *minor_status,
-                                  gss_ctx_id_t *context_handle,
-                                  const gss_OID desired_object,
-@@ -904,20 +904,103 @@ static struct gss_config krb5_mechanism = {
-     krb5_gss_get_mic_iov_length,
- };
- 
-+/* Functions which use security contexts or acquire creds are IAKERB-specific;
-+ * other functions can borrow from the krb5 mech. */
-+static struct gss_config iakerb_mechanism = {
-+    { GSS_MECH_KRB5_OID_LENGTH, GSS_MECH_KRB5_OID },
-+    NULL,
-+    iakerb_gss_acquire_cred,
-+    krb5_gss_release_cred,
-+    iakerb_gss_init_sec_context,
-+#ifdef LEAN_CLIENT
-+    NULL,
-+#else
-+    iakerb_gss_accept_sec_context,
-+#endif
-+    iakerb_gss_process_context_token,
-+    iakerb_gss_delete_sec_context,
-+    iakerb_gss_context_time,
-+    iakerb_gss_get_mic,
-+    iakerb_gss_verify_mic,
-+#if defined(IOV_SHIM_EXERCISE_WRAP) || defined(IOV_SHIM_EXERCISE)
-+    NULL,
-+#else
-+    iakerb_gss_wrap,
-+#endif
-+#if defined(IOV_SHIM_EXERCISE_UNWRAP) || defined(IOV_SHIM_EXERCISE)
-+    NULL,
-+#else
-+    iakerb_gss_unwrap,
-+#endif
-+    krb5_gss_display_status,
-+    krb5_gss_indicate_mechs,
-+    krb5_gss_compare_name,
-+    krb5_gss_display_name,
-+    krb5_gss_import_name,
-+    krb5_gss_release_name,
-+    krb5_gss_inquire_cred,
-+    NULL,                /* add_cred */
-+#ifdef LEAN_CLIENT
-+    NULL,
-+    NULL,
-+#else
-+    iakerb_gss_export_sec_context,
-+    NULL,
-+#endif
-+    krb5_gss_inquire_cred_by_mech,
-+    krb5_gss_inquire_names_for_mech,
-+    iakerb_gss_inquire_context,
-+    krb5_gss_internal_release_oid,
-+    iakerb_gss_wrap_size_limit,
-+    krb5_gss_localname,
-+    krb5_gss_authorize_localname,
-+    krb5_gss_export_name,
-+    krb5_gss_duplicate_name,
-+    krb5_gss_store_cred,
-+    iakerb_gss_inquire_sec_context_by_oid,
-+    krb5_gss_inquire_cred_by_oid,
-+    iakerb_gss_set_sec_context_option,
-+    krb5_gssspi_set_cred_option,
-+    krb5_gssspi_mech_invoke,
-+    NULL,                /* wrap_aead */
-+    NULL,                /* unwrap_aead */
-+    iakerb_gss_wrap_iov,
-+    iakerb_gss_unwrap_iov,
-+    iakerb_gss_wrap_iov_length,
-+    NULL,               /* complete_auth_token */
-+    NULL,               /* acquire_cred_impersonate_name */
-+    NULL,               /* add_cred_impersonate_name */
-+    NULL,               /* display_name_ext */
-+    krb5_gss_inquire_name,
-+    krb5_gss_get_name_attribute,
-+    krb5_gss_set_name_attribute,
-+    krb5_gss_delete_name_attribute,
-+    krb5_gss_export_name_composite,
-+    krb5_gss_map_name_to_any,
-+    krb5_gss_release_any_name_mapping,
-+    iakerb_gss_pseudo_random,
-+    NULL,               /* set_neg_mechs */
-+    krb5_gss_inquire_saslname_for_mech,
-+    krb5_gss_inquire_mech_for_saslname,
-+    krb5_gss_inquire_attrs_for_mech,
-+    krb5_gss_acquire_cred_from,
-+    krb5_gss_store_cred_into,
-+    iakerb_gss_acquire_cred_with_password,
-+    krb5_gss_export_cred,
-+    krb5_gss_import_cred,
-+    NULL,               /* import_sec_context_by_mech */
-+    NULL,               /* import_name_by_mech */
-+    NULL,               /* import_cred_by_mech */
-+    iakerb_gss_get_mic_iov,
-+    iakerb_gss_verify_mic_iov,
-+    iakerb_gss_get_mic_iov_length,
-+};
-+
- #ifdef _GSS_STATIC_LINK
- #include "mglueP.h"
- static int gss_iakerbmechglue_init(void)
- {
-     struct gss_mech_config mech_iakerb;
--    struct gss_config iakerb_mechanism = krb5_mechanism;
--
--    /* IAKERB mechanism mirrors krb5, but with different context SPIs */
--    iakerb_mechanism.gss_accept_sec_context = iakerb_gss_accept_sec_context;
--    iakerb_mechanism.gss_init_sec_context   = iakerb_gss_init_sec_context;
--    iakerb_mechanism.gss_delete_sec_context = iakerb_gss_delete_sec_context;
--    iakerb_mechanism.gss_acquire_cred       = iakerb_gss_acquire_cred;
--    iakerb_mechanism.gssspi_acquire_cred_with_password
--                                    = iakerb_gss_acquire_cred_with_password;
- 
-     memset(&mech_iakerb, 0, sizeof(mech_iakerb));
-     mech_iakerb.mech = &iakerb_mechanism;
-diff --git a/src/lib/gssapi/krb5/iakerb.c b/src/lib/gssapi/krb5/iakerb.c
-index f30de32..4662bd9 100644
---- a/src/lib/gssapi/krb5/iakerb.c
-+++ b/src/lib/gssapi/krb5/iakerb.c
-@@ -47,6 +47,8 @@ struct _iakerb_ctx_id_rec {
-     gss_ctx_id_t gssc;
-     krb5_data conv;                     /* conversation for checksumming */
-     unsigned int count;                 /* number of round trips */
-+    int initiate;
-+    int established;
-     krb5_get_init_creds_opt *gic_opts;
- };
- 
-@@ -695,7 +697,7 @@ cleanup:
-  * Allocate and initialise an IAKERB context
-  */
- static krb5_error_code
--iakerb_alloc_context(iakerb_ctx_id_t *pctx)
-+iakerb_alloc_context(iakerb_ctx_id_t *pctx, int initiate)
- {
-     iakerb_ctx_id_t ctx;
-     krb5_error_code code;
-@@ -709,6 +711,8 @@ iakerb_alloc_context(iakerb_ctx_id_t *pctx)
-     ctx->magic = KG_IAKERB_CONTEXT;
-     ctx->state = IAKERB_AS_REQ;
-     ctx->count = 0;
-+    ctx->initiate = initiate;
-+    ctx->established = 0;
- 
-     code = krb5_gss_init_context(&ctx->k5c);
-     if (code != 0)
-@@ -732,7 +736,7 @@ iakerb_gss_delete_sec_context(OM_uint32 *minor_status,
-                               gss_ctx_id_t *context_handle,
-                               gss_buffer_t output_token)
- {
--    OM_uint32 major_status = GSS_S_COMPLETE;
-+    iakerb_ctx_id_t iakerb_ctx = (iakerb_ctx_id_t)*context_handle;
- 
-     if (output_token != GSS_C_NO_BUFFER) {
-         output_token->length = 0;
-@@ -740,23 +744,10 @@ iakerb_gss_delete_sec_context(OM_uint32 *minor_status,
-     }
- 
-     *minor_status = 0;
-+    *context_handle = GSS_C_NO_CONTEXT;
-+    iakerb_release_context(iakerb_ctx);
- 
--    if (*context_handle != GSS_C_NO_CONTEXT) {
--        iakerb_ctx_id_t iakerb_ctx = (iakerb_ctx_id_t)*context_handle;
--
--        if (iakerb_ctx->magic == KG_IAKERB_CONTEXT) {
--            iakerb_release_context(iakerb_ctx);
--            *context_handle = GSS_C_NO_CONTEXT;
--        } else {
--            assert(iakerb_ctx->magic == KG_CONTEXT);
--
--            major_status = krb5_gss_delete_sec_context(minor_status,
--                                                       context_handle,
--                                                       output_token);
--        }
--    }
--
--    return major_status;
-+    return GSS_S_COMPLETE;
- }
- 
- static krb5_boolean
-@@ -802,7 +793,7 @@ iakerb_gss_accept_sec_context(OM_uint32 *minor_status,
-     int initialContextToken = (*context_handle == GSS_C_NO_CONTEXT);
- 
-     if (initialContextToken) {
--        code = iakerb_alloc_context(&ctx);
-+        code = iakerb_alloc_context(&ctx, 0);
-         if (code != 0)
-             goto cleanup;
- 
-@@ -854,11 +845,8 @@ iakerb_gss_accept_sec_context(OM_uint32 *minor_status,
-                                                        time_rec,
-                                                        delegated_cred_handle,
-                                                        &exts);
--        if (major_status == GSS_S_COMPLETE) {
--            *context_handle = ctx->gssc;
--            ctx->gssc = NULL;
--            iakerb_release_context(ctx);
--        }
-+        if (major_status == GSS_S_COMPLETE)
-+            ctx->established = 1;
-         if (mech_type != NULL)
-             *mech_type = (gss_OID)gss_mech_krb5;
-     }
-@@ -897,7 +885,7 @@ iakerb_gss_init_sec_context(OM_uint32 *minor_status,
-     int initialContextToken = (*context_handle == GSS_C_NO_CONTEXT);
- 
-     if (initialContextToken) {
--        code = iakerb_alloc_context(&ctx);
-+        code = iakerb_alloc_context(&ctx, 1);
-         if (code != 0) {
-             *minor_status = code;
-             goto cleanup;
-@@ -983,11 +971,8 @@ iakerb_gss_init_sec_context(OM_uint32 *minor_status,
-                                                      ret_flags,
-                                                      time_rec,
-                                                      &exts);
--        if (major_status == GSS_S_COMPLETE) {
--            *context_handle = ctx->gssc;
--            ctx->gssc = GSS_C_NO_CONTEXT;
--            iakerb_release_context(ctx);
--        }
-+        if (major_status == GSS_S_COMPLETE)
-+            ctx->established = 1;
-         if (actual_mech_type != NULL)
-             *actual_mech_type = (gss_OID)gss_mech_krb5;
-     } else {
-@@ -1010,3 +995,309 @@ cleanup:
- 
-     return major_status;
- }
-+
-+OM_uint32 KRB5_CALLCONV
-+iakerb_gss_unwrap(OM_uint32 *minor_status, gss_ctx_id_t context_handle,
-+                  gss_buffer_t input_message_buffer,
-+                  gss_buffer_t output_message_buffer, int *conf_state,
-+                  gss_qop_t *qop_state)
-+{
-+    iakerb_ctx_id_t ctx = (iakerb_ctx_id_t)context_handle;
-+
-+    if (ctx->gssc == GSS_C_NO_CONTEXT)
-+        return GSS_S_NO_CONTEXT;
-+
-+    return krb5_gss_unwrap(minor_status, ctx->gssc, input_message_buffer,
-+                           output_message_buffer, conf_state, qop_state);
-+}
-+
-+OM_uint32 KRB5_CALLCONV
-+iakerb_gss_wrap(OM_uint32 *minor_status, gss_ctx_id_t context_handle,
-+                int conf_req_flag, gss_qop_t qop_req,
-+                gss_buffer_t input_message_buffer, int *conf_state,
-+                gss_buffer_t output_message_buffer)
-+{
-+    iakerb_ctx_id_t ctx = (iakerb_ctx_id_t)context_handle;
-+
-+    if (ctx->gssc == GSS_C_NO_CONTEXT)
-+        return GSS_S_NO_CONTEXT;
-+
-+    return krb5_gss_wrap(minor_status, ctx->gssc, conf_req_flag, qop_req,
-+                         input_message_buffer, conf_state,
-+                         output_message_buffer);
-+}
-+
-+OM_uint32 KRB5_CALLCONV
-+iakerb_gss_process_context_token(OM_uint32 *minor_status,
-+                                 const gss_ctx_id_t context_handle,
-+                                 const gss_buffer_t token_buffer)
-+{
-+    iakerb_ctx_id_t ctx = (iakerb_ctx_id_t)context_handle;
-+
-+    if (ctx->gssc == GSS_C_NO_CONTEXT)
-+        return GSS_S_DEFECTIVE_TOKEN;
-+
-+    return krb5_gss_process_context_token(minor_status, ctx->gssc,
-+                                          token_buffer);
-+}
-+
-+OM_uint32 KRB5_CALLCONV
-+iakerb_gss_context_time(OM_uint32 *minor_status, gss_ctx_id_t context_handle,
-+                        OM_uint32 *time_rec)
-+{
-+    iakerb_ctx_id_t ctx = (iakerb_ctx_id_t)context_handle;
-+
-+    if (ctx->gssc == GSS_C_NO_CONTEXT)
-+        return GSS_S_NO_CONTEXT;
-+
-+    return krb5_gss_context_time(minor_status, ctx->gssc, time_rec);
-+}
-+
-+#ifndef LEAN_CLIENT
-+
-+OM_uint32 KRB5_CALLCONV
-+iakerb_gss_export_sec_context(OM_uint32 *minor_status,
-+                              gss_ctx_id_t *context_handle,
-+                              gss_buffer_t interprocess_token)
-+{
-+    OM_uint32 maj;
-+    iakerb_ctx_id_t ctx = (iakerb_ctx_id_t)context_handle;
-+
-+    /* We don't currently support exporting partially established contexts. */
-+    if (!ctx->established)
-+        return GSS_S_UNAVAILABLE;
-+
-+    maj = krb5_gss_export_sec_context(minor_status, &ctx->gssc,
-+                                      interprocess_token);
-+    if (ctx->gssc == GSS_C_NO_CONTEXT) {
-+        iakerb_release_context(ctx);
-+        *context_handle = GSS_C_NO_CONTEXT;
-+    }
-+    return maj;
-+}
-+
-+/*
-+ * Until we implement partial context exports, there are no SPNEGO exported
-+ * context tokens, only tokens for the underlying krb5 context.  So we do not
-+ * need to implement an iakerb_gss_import_sec_context() yet; it would be
-+ * unreachable except via a manually constructed token.
-+ */
-+
-+#endif /* LEAN_CLIENT */
-+
-+OM_uint32 KRB5_CALLCONV
-+iakerb_gss_inquire_context(OM_uint32 *minor_status,
-+                           gss_ctx_id_t context_handle, gss_name_t *src_name,
-+                           gss_name_t *targ_name, OM_uint32 *lifetime_rec,
-+                           gss_OID *mech_type, OM_uint32 *ctx_flags,
-+                           int *initiate, int *opened)
-+{
-+    OM_uint32 ret;
-+    iakerb_ctx_id_t ctx = (iakerb_ctx_id_t)context_handle;
-+
-+    if (src_name != NULL)
-+        *src_name = GSS_C_NO_NAME;
-+    if (targ_name != NULL)
-+        *targ_name = GSS_C_NO_NAME;
-+    if (lifetime_rec != NULL)
-+        *lifetime_rec = 0;
-+    if (mech_type != NULL)
-+        *mech_type = (gss_OID)gss_mech_iakerb;
-+    if (ctx_flags != NULL)
-+        *ctx_flags = 0;
-+    if (initiate != NULL)
-+        *initiate = ctx->initiate;
-+    if (opened != NULL)
-+        *opened = ctx->established;
-+
-+    if (ctx->gssc == GSS_C_NO_CONTEXT)
-+        return GSS_S_COMPLETE;
-+
-+    ret = krb5_gss_inquire_context(minor_status, ctx->gssc, src_name,
-+                                   targ_name, lifetime_rec, mech_type,
-+                                   ctx_flags, initiate, opened);
-+
-+    if (!ctx->established) {
-+        /* Report IAKERB as the mech OID until the context is established. */
-+        if (mech_type != NULL)
-+            *mech_type = (gss_OID)gss_mech_iakerb;
-+
-+        /* We don't support exporting partially-established contexts. */
-+        if (ctx_flags != NULL)
-+            *ctx_flags &= ~GSS_C_TRANS_FLAG;
-+    }
-+
-+    return ret;
-+}
-+
-+OM_uint32 KRB5_CALLCONV
-+iakerb_gss_wrap_size_limit(OM_uint32 *minor_status,
-+                           gss_ctx_id_t context_handle, int conf_req_flag,
-+                           gss_qop_t qop_req, OM_uint32 req_output_size,
-+                           OM_uint32 *max_input_size)
-+{
-+    iakerb_ctx_id_t ctx = (iakerb_ctx_id_t)context_handle;
-+
-+    if (ctx->gssc == GSS_C_NO_CONTEXT)
-+        return GSS_S_NO_CONTEXT;
-+
-+    return krb5_gss_wrap_size_limit(minor_status, ctx->gssc, conf_req_flag,
-+                                    qop_req, req_output_size, max_input_size);
-+}
-+
-+OM_uint32 KRB5_CALLCONV
-+iakerb_gss_get_mic(OM_uint32 *minor_status, gss_ctx_id_t context_handle,
-+                   gss_qop_t qop_req, gss_buffer_t message_buffer,
-+                   gss_buffer_t message_token)
-+{
-+    iakerb_ctx_id_t ctx = (iakerb_ctx_id_t)context_handle;
-+
-+    if (ctx->gssc == GSS_C_NO_CONTEXT)
-+        return GSS_S_NO_CONTEXT;
-+
-+    return krb5_gss_get_mic(minor_status, ctx->gssc, qop_req, message_buffer,
-+                            message_token);
-+}
-+
-+OM_uint32 KRB5_CALLCONV
-+iakerb_gss_verify_mic(OM_uint32 *minor_status, gss_ctx_id_t context_handle,
-+                      gss_buffer_t msg_buffer, gss_buffer_t token_buffer,
-+                      gss_qop_t *qop_state)
-+{
-+    iakerb_ctx_id_t ctx = (iakerb_ctx_id_t)context_handle;
-+
-+    if (ctx->gssc == GSS_C_NO_CONTEXT)
-+        return GSS_S_NO_CONTEXT;
-+
-+    return krb5_gss_verify_mic(minor_status, ctx->gssc, msg_buffer,
-+                               token_buffer, qop_state);
-+}
-+
-+OM_uint32 KRB5_CALLCONV
-+iakerb_gss_inquire_sec_context_by_oid(OM_uint32 *minor_status,
-+                                      const gss_ctx_id_t context_handle,
-+                                      const gss_OID desired_object,
-+                                      gss_buffer_set_t *data_set)
-+{
-+    iakerb_ctx_id_t ctx = (iakerb_ctx_id_t)context_handle;
-+
-+    if (ctx->gssc == GSS_C_NO_CONTEXT)
-+        return GSS_S_UNAVAILABLE;
-+
-+    return krb5_gss_inquire_sec_context_by_oid(minor_status, ctx->gssc,
-+                                               desired_object, data_set);
-+}
-+
-+OM_uint32 KRB5_CALLCONV
-+iakerb_gss_set_sec_context_option(OM_uint32 *minor_status,
-+                                  gss_ctx_id_t *context_handle,
-+                                  const gss_OID desired_object,
-+                                  const gss_buffer_t value)
-+{
-+    iakerb_ctx_id_t ctx = (iakerb_ctx_id_t)*context_handle;
-+
-+    if (ctx == NULL || ctx->gssc == GSS_C_NO_CONTEXT)
-+        return GSS_S_UNAVAILABLE;
-+
-+    return krb5_gss_set_sec_context_option(minor_status, &ctx->gssc,
-+                                           desired_object, value);
-+}
-+
-+OM_uint32 KRB5_CALLCONV
-+iakerb_gss_wrap_iov(OM_uint32 *minor_status, gss_ctx_id_t context_handle,
-+                    int conf_req_flag, gss_qop_t qop_req, int *conf_state,
-+                    gss_iov_buffer_desc *iov, int iov_count)
-+{
-+    iakerb_ctx_id_t ctx = (iakerb_ctx_id_t)context_handle;
-+
-+    if (ctx->gssc == GSS_C_NO_CONTEXT)
-+        return GSS_S_NO_CONTEXT;
-+
-+    return krb5_gss_wrap_iov(minor_status, ctx->gssc, conf_req_flag, qop_req,
-+                             conf_state, iov, iov_count);
-+}
-+
-+OM_uint32 KRB5_CALLCONV
-+iakerb_gss_unwrap_iov(OM_uint32 *minor_status, gss_ctx_id_t context_handle,
-+                      int *conf_state, gss_qop_t *qop_state,
-+                      gss_iov_buffer_desc *iov, int iov_count)
-+{
-+    iakerb_ctx_id_t ctx = (iakerb_ctx_id_t)context_handle;
-+
-+    if (ctx->gssc == GSS_C_NO_CONTEXT)
-+        return GSS_S_NO_CONTEXT;
-+
-+    return krb5_gss_unwrap_iov(minor_status, ctx->gssc, conf_state, qop_state,
-+                               iov, iov_count);
-+}
-+
-+OM_uint32 KRB5_CALLCONV
-+iakerb_gss_wrap_iov_length(OM_uint32 *minor_status,
-+                           gss_ctx_id_t context_handle, int conf_req_flag,
-+                           gss_qop_t qop_req, int *conf_state,
-+                           gss_iov_buffer_desc *iov, int iov_count)
-+{
-+    iakerb_ctx_id_t ctx = (iakerb_ctx_id_t)context_handle;
-+
-+    if (ctx->gssc == GSS_C_NO_CONTEXT)
-+        return GSS_S_NO_CONTEXT;
-+
-+    return krb5_gss_wrap_iov_length(minor_status, ctx->gssc, conf_req_flag,
-+                                    qop_req, conf_state, iov, iov_count);
-+}
-+
-+OM_uint32 KRB5_CALLCONV
-+iakerb_gss_pseudo_random(OM_uint32 *minor_status, gss_ctx_id_t context_handle,
-+                         int prf_key, const gss_buffer_t prf_in,
-+                         ssize_t desired_output_len, gss_buffer_t prf_out)
-+{
-+    iakerb_ctx_id_t ctx = (iakerb_ctx_id_t)context_handle;
-+
-+    if (ctx->gssc == GSS_C_NO_CONTEXT)
-+        return GSS_S_NO_CONTEXT;
-+
-+    return krb5_gss_pseudo_random(minor_status, ctx->gssc, prf_key, prf_in,
-+                                  desired_output_len, prf_out);
-+}
-+
-+OM_uint32 KRB5_CALLCONV
-+iakerb_gss_get_mic_iov(OM_uint32 *minor_status, gss_ctx_id_t context_handle,
-+                       gss_qop_t qop_req, gss_iov_buffer_desc *iov,
-+                       int iov_count)
-+{
-+    iakerb_ctx_id_t ctx = (iakerb_ctx_id_t)context_handle;
-+
-+    if (ctx->gssc == GSS_C_NO_CONTEXT)
-+        return GSS_S_NO_CONTEXT;
-+
-+    return krb5_gss_get_mic_iov(minor_status, ctx->gssc, qop_req, iov,
-+                                iov_count);
-+}
-+
-+OM_uint32 KRB5_CALLCONV
-+iakerb_gss_verify_mic_iov(OM_uint32 *minor_status, gss_ctx_id_t context_handle,
-+                          gss_qop_t *qop_state, gss_iov_buffer_desc *iov,
-+                          int iov_count)
-+{
-+    iakerb_ctx_id_t ctx = (iakerb_ctx_id_t)context_handle;
-+
-+    if (ctx->gssc == GSS_C_NO_CONTEXT)
-+        return GSS_S_NO_CONTEXT;
-+
-+    return krb5_gss_verify_mic_iov(minor_status, ctx->gssc, qop_state, iov,
-+                                   iov_count);
-+}
-+
-+OM_uint32 KRB5_CALLCONV
-+iakerb_gss_get_mic_iov_length(OM_uint32 *minor_status,
-+                              gss_ctx_id_t context_handle, gss_qop_t qop_req,
-+                              gss_iov_buffer_desc *iov, int iov_count)
-+{
-+    iakerb_ctx_id_t ctx = (iakerb_ctx_id_t)context_handle;
-+
-+    if (ctx->gssc == GSS_C_NO_CONTEXT)
-+        return GSS_S_NO_CONTEXT;
-+
-+    return krb5_gss_get_mic_iov_length(minor_status, ctx->gssc, qop_req, iov,
-+                                       iov_count);
-+}
diff --git a/gnu/packages/patches/mit-krb5-CVE-2015-2697.patch b/gnu/packages/patches/mit-krb5-CVE-2015-2697.patch
deleted file mode 100644
index f65ce39623..0000000000
--- a/gnu/packages/patches/mit-krb5-CVE-2015-2697.patch
+++ /dev/null
@@ -1,55 +0,0 @@
-Copied from Debian.
-
-From fcafb522a0509bfd6f4f6b57e4a1e93c0092eeb0 Mon Sep 17 00:00:00 2001
-From: Greg Hudson <ghudson@mit.edu>
-Date: Fri, 25 Sep 2015 12:51:47 -0400
-Subject: Fix build_principal memory bug [CVE-2015-2697]
-
-In build_principal_va(), use k5memdup0() instead of strdup() to make a
-copy of the realm, to ensure that we allocate the correct number of
-bytes and do not read past the end of the input string.  This bug
-affects krb5_build_principal(), krb5_build_principal_va(), and
-krb5_build_principal_alloc_va().  krb5_build_principal_ext() is not
-affected.
-
-CVE-2015-2697:
-
-In MIT krb5 1.7 and later, an authenticated attacker may be able to
-cause a KDC to crash using a TGS request with a large realm field
-beginning with a null byte.  If the KDC attempts to find a referral to
-answer the request, it constructs a principal name for lookup using
-krb5_build_principal() with the requested realm.  Due to a bug in this
-function, the null byte causes only one byte be allocated for the
-realm field of the constructed principal, far less than its length.
-Subsequent operations on the lookup principal may cause a read beyond
-the end of the mapped memory region, causing the KDC process to crash.
-
-CVSSv2: AV:N/AC:L/Au:S/C:N/I:N/A:C/E:POC/RL:OF/RC:C
-
-ticket: 8252 (new)
-target_version: 1.14
-tags: pullup
-
-(cherry picked from commit f0c094a1b745d91ef2f9a4eae2149aac026a5789)
-Patch-Category: upstream
----
- src/lib/krb5/krb/bld_princ.c | 6 ++----
- 1 file changed, 2 insertions(+), 4 deletions(-)
-
-diff --git a/src/lib/krb5/krb/bld_princ.c b/src/lib/krb5/krb/bld_princ.c
-index ab6fed8..8604268 100644
---- a/src/lib/krb5/krb/bld_princ.c
-+++ b/src/lib/krb5/krb/bld_princ.c
-@@ -40,10 +40,8 @@ build_principal_va(krb5_context context, krb5_principal princ,
-     data = malloc(size * sizeof(krb5_data));
-     if (!data) { retval = ENOMEM; }
- 
--    if (!retval) {
--        r = strdup(realm);
--        if (!r) { retval = ENOMEM; }
--    }
-+    if (!retval)
-+        r = k5memdup0(realm, rlen, &retval);
- 
-     while (!retval && (component = va_arg(ap, char *))) {
-         if (count == size) {
diff --git a/gnu/packages/patches/mit-krb5-CVE-2015-2698-pt1.patch b/gnu/packages/patches/mit-krb5-CVE-2015-2698-pt1.patch
deleted file mode 100644
index 67545e4c16..0000000000
--- a/gnu/packages/patches/mit-krb5-CVE-2015-2698-pt1.patch
+++ /dev/null
@@ -1,43 +0,0 @@
-Copied from Debian.
-
-From 1a8bdc6d81dcd7dd8a4d42e8de6d2cacf1dd4408 Mon Sep 17 00:00:00 2001
-From: Greg Hudson <ghudson@mit.edu>
-Date: Tue, 27 Oct 2015 00:44:24 -0400
-Subject: Fix two IAKERB comments
-
-The comment explaining why there is no iakerb_gss_import_sec_context()
-erroneously referenced SPNEGO instead of IAKERB (noticed by Ben
-Kaduk).  The comment above iakerb_gss_delete_sec_context() is out of
-date after the last commit.
-
-(cherry picked from commit 92d6dd045dfc06cc03d20b327a6ee7a71e6bc24d)
-
-Patch-Category: upstream
----
- src/lib/gssapi/krb5/iakerb.c | 6 +-----
- 1 file changed, 1 insertion(+), 5 deletions(-)
-
-diff --git a/src/lib/gssapi/krb5/iakerb.c b/src/lib/gssapi/krb5/iakerb.c
-index 4662bd9..e25862d 100644
---- a/src/lib/gssapi/krb5/iakerb.c
-+++ b/src/lib/gssapi/krb5/iakerb.c
-@@ -727,10 +727,6 @@ cleanup:
-     return code;
- }
- 
--/*
-- * Delete an IAKERB context. This can also accept Kerberos context
-- * handles. The heuristic is similar to SPNEGO's delete_sec_context.
-- */
- OM_uint32 KRB5_CALLCONV
- iakerb_gss_delete_sec_context(OM_uint32 *minor_status,
-                               gss_ctx_id_t *context_handle,
-@@ -1077,7 +1073,7 @@ iakerb_gss_export_sec_context(OM_uint32 *minor_status,
- }
- 
- /*
-- * Until we implement partial context exports, there are no SPNEGO exported
-+ * Until we implement partial context exports, there are no IAKERB exported
-  * context tokens, only tokens for the underlying krb5 context.  So we do not
-  * need to implement an iakerb_gss_import_sec_context() yet; it would be
-  * unreachable except via a manually constructed token.
diff --git a/gnu/packages/patches/mit-krb5-CVE-2015-2698-pt2.patch b/gnu/packages/patches/mit-krb5-CVE-2015-2698-pt2.patch
deleted file mode 100644
index 8725cd4eed..0000000000
--- a/gnu/packages/patches/mit-krb5-CVE-2015-2698-pt2.patch
+++ /dev/null
@@ -1,132 +0,0 @@
-Copied from Debian.
-
-From 4b330d5be1f8048be4d079ac3cb38d60c0e99e69 Mon Sep 17 00:00:00 2001
-From: Greg Hudson <ghudson@mit.edu>
-Date: Wed, 4 Nov 2015 21:28:28 -0500
-Subject: Fix IAKERB context export/import [CVE-2015-2698]
-
-The patches for CVE-2015-2696 contained a regression in the newly
-added IAKERB iakerb_gss_export_sec_context() function, which could
-cause it to corrupt memory.  Fix the regression by properly
-dereferencing the context_handle pointer before casting it.
-
-Also, the patches did not implement an IAKERB gss_import_sec_context()
-function, under the erroneous belief than an exported IAKERB context
-would be tagged as a krb5 context.  Implement it now to allow IAKERB
-contexts to be successfully exported and imported after establishment.
-
-CVE-2015-2698:
-
-In any MIT krb5 release with the patches for CVE-2015-2696 applied, an
-application which calls gss_export_sec_context() may experience memory
-corruption if the context was established using the IAKERB mechanism.
-Historically, some vulnerabilities of this nature can be translated
-into remote code execution, though the necessary exploits must be
-tailored to the individual application and are usually quite
-complicated.
-
-    CVSSv2 Vector: AV:N/AC:H/Au:S/C:C/I:C/A:C/E:POC/RL:OF/RC:C
-
-ticket: 8273 (new)
-target_version: 1.14
-tags: pullup
-
-(cherry picked from commit d8b31c874c7d1039be7649362ef11c89f4e14c27)
-
-Patch-Category: upstream
----
- src/lib/gssapi/krb5/gssapiP_krb5.h |  5 +++++
- src/lib/gssapi/krb5/gssapi_krb5.c  |  2 +-
- src/lib/gssapi/krb5/iakerb.c       | 42 +++++++++++++++++++++++++++++++-------
- 3 files changed, 41 insertions(+), 8 deletions(-)
-
-diff --git a/src/lib/gssapi/krb5/gssapiP_krb5.h b/src/lib/gssapi/krb5/gssapiP_krb5.h
-index 05dc321..ac53662 100644
---- a/src/lib/gssapi/krb5/gssapiP_krb5.h
-+++ b/src/lib/gssapi/krb5/gssapiP_krb5.h
-@@ -1396,6 +1396,11 @@ OM_uint32 KRB5_CALLCONV
- iakerb_gss_export_sec_context(OM_uint32 *minor_status,
-                               gss_ctx_id_t *context_handle,
-                               gss_buffer_t interprocess_token);
-+
-+OM_uint32 KRB5_CALLCONV
-+iakerb_gss_import_sec_context(OM_uint32 *minor_status,
-+                              const gss_buffer_t interprocess_token,
-+                              gss_ctx_id_t *context_handle);
- #endif /* LEAN_CLIENT */
- 
- OM_uint32 KRB5_CALLCONV
-diff --git a/src/lib/gssapi/krb5/gssapi_krb5.c b/src/lib/gssapi/krb5/gssapi_krb5.c
-index 9a23656..d7ba279 100644
---- a/src/lib/gssapi/krb5/gssapi_krb5.c
-+++ b/src/lib/gssapi/krb5/gssapi_krb5.c
-@@ -945,7 +945,7 @@ static struct gss_config iakerb_mechanism = {
-     NULL,
- #else
-     iakerb_gss_export_sec_context,
--    NULL,
-+    iakerb_gss_import_sec_context,
- #endif
-     krb5_gss_inquire_cred_by_mech,
-     krb5_gss_inquire_names_for_mech,
-diff --git a/src/lib/gssapi/krb5/iakerb.c b/src/lib/gssapi/krb5/iakerb.c
-index e25862d..32a341e 100644
---- a/src/lib/gssapi/krb5/iakerb.c
-+++ b/src/lib/gssapi/krb5/iakerb.c
-@@ -1057,7 +1057,7 @@ iakerb_gss_export_sec_context(OM_uint32 *minor_status,
-                               gss_buffer_t interprocess_token)
- {
-     OM_uint32 maj;
--    iakerb_ctx_id_t ctx = (iakerb_ctx_id_t)context_handle;
-+    iakerb_ctx_id_t ctx = (iakerb_ctx_id_t)*context_handle;
- 
-     /* We don't currently support exporting partially established contexts. */
-     if (!ctx->established)
-@@ -1072,13 +1072,41 @@ iakerb_gss_export_sec_context(OM_uint32 *minor_status,
-     return maj;
- }
- 
--/*
-- * Until we implement partial context exports, there are no IAKERB exported
-- * context tokens, only tokens for the underlying krb5 context.  So we do not
-- * need to implement an iakerb_gss_import_sec_context() yet; it would be
-- * unreachable except via a manually constructed token.
-- */
-+OM_uint32 KRB5_CALLCONV
-+iakerb_gss_import_sec_context(OM_uint32 *minor_status,
-+                              gss_buffer_t interprocess_token,
-+                              gss_ctx_id_t *context_handle)
-+{
-+    OM_uint32 maj, tmpmin;
-+    krb5_error_code code;
-+    gss_ctx_id_t gssc;
-+    krb5_gss_ctx_id_t kctx;
-+    iakerb_ctx_id_t ctx;
-+
-+    maj = krb5_gss_import_sec_context(minor_status, interprocess_token, &gssc);
-+    if (maj != GSS_S_COMPLETE)
-+        return maj;
-+    kctx = (krb5_gss_ctx_id_t)gssc;
-+
-+    if (!kctx->established) {
-+        /* We don't currently support importing partially established
-+         * contexts. */
-+        krb5_gss_delete_sec_context(&tmpmin, &gssc, GSS_C_NO_BUFFER);
-+        return GSS_S_FAILURE;
-+    }
- 
-+    code = iakerb_alloc_context(&ctx, kctx->initiate);
-+    if (code != 0) {
-+        krb5_gss_delete_sec_context(&tmpmin, &gssc, GSS_C_NO_BUFFER);
-+        *minor_status = code;
-+        return GSS_S_FAILURE;
-+    }
-+
-+    ctx->gssc = gssc;
-+    ctx->established = 1;
-+    *context_handle = (gss_ctx_id_t)ctx;
-+    return GSS_S_COMPLETE;
-+}
- #endif /* LEAN_CLIENT */
- 
- OM_uint32 KRB5_CALLCONV
diff --git a/gnu/packages/patches/mit-krb5-CVE-2015-8629.patch b/gnu/packages/patches/mit-krb5-CVE-2015-8629.patch
new file mode 100644
index 0000000000..a296d8cb1b
--- /dev/null
+++ b/gnu/packages/patches/mit-krb5-CVE-2015-8629.patch
@@ -0,0 +1,51 @@
+Copied from Fedora.
+http://pkgs.fedoraproject.org/cgit/rpms/krb5.git/tree/krb5-CVE-2015-8629.patch?h=f22
+
+From df17a1224a3406f57477bcd372c61e04c0e5a5bb Mon Sep 17 00:00:00 2001
+From: Greg Hudson <ghudson@mit.edu>
+Date: Fri, 8 Jan 2016 12:45:25 -0500
+Subject: [PATCH 1/3] Verify decoded kadmin C strings [CVE-2015-8629]
+
+In xdr_nullstring(), check that the decoded string is terminated with
+a zero byte and does not contain any internal zero bytes.
+
+CVE-2015-8629:
+
+In all versions of MIT krb5, an authenticated attacker can cause
+kadmind to read beyond the end of allocated memory by sending a string
+without a terminating zero byte.  Information leakage may be possible
+for an attacker with permission to modify the database.
+
+    CVSSv2 Vector: AV:N/AC:H/Au:S/C:P/I:N/A:N/E:POC/RL:OF/RC:C
+
+ticket: 8341 (new)
+target_version: 1.14-next
+target_version: 1.13-next
+tags: pullup
+---
+ src/lib/kadm5/kadm_rpc_xdr.c | 9 ++++++++-
+ 1 file changed, 8 insertions(+), 1 deletion(-)
+
+diff --git a/src/lib/kadm5/kadm_rpc_xdr.c b/src/lib/kadm5/kadm_rpc_xdr.c
+index 2bef858..ba67084 100644
+--- a/src/lib/kadm5/kadm_rpc_xdr.c
++++ b/src/lib/kadm5/kadm_rpc_xdr.c
+@@ -64,7 +64,14 @@ bool_t xdr_nullstring(XDR *xdrs, char **objp)
+ 		    return FALSE;
+ 	       }
+ 	  }
+-	  return (xdr_opaque(xdrs, *objp, size));
++	  if (!xdr_opaque(xdrs, *objp, size))
++		  return FALSE;
++	  /* Check that the unmarshalled bytes are a C string. */
++	  if ((*objp)[size - 1] != '\0')
++		  return FALSE;
++	  if (memchr(*objp, '\0', size - 1) != NULL)
++		  return FALSE;
++	  return TRUE;
+ 
+      case XDR_ENCODE:
+ 	  if (size != 0)
+-- 
+2.7.0.rc3
+
diff --git a/gnu/packages/patches/mit-krb5-CVE-2015-8630.patch b/gnu/packages/patches/mit-krb5-CVE-2015-8630.patch
new file mode 100644
index 0000000000..c21d84b1e7
--- /dev/null
+++ b/gnu/packages/patches/mit-krb5-CVE-2015-8630.patch
@@ -0,0 +1,81 @@
+Copied from Fedora.
+http://pkgs.fedoraproject.org/cgit/rpms/krb5.git/tree/krb5-CVE-2015-8630.patch?h=f22
+
+From b863de7fbf080b15e347a736fdda0a82d42f4f6b Mon Sep 17 00:00:00 2001
+From: Greg Hudson <ghudson@mit.edu>
+Date: Fri, 8 Jan 2016 12:52:28 -0500
+Subject: [PATCH 2/3] Check for null kadm5 policy name [CVE-2015-8630]
+
+In kadm5_create_principal_3() and kadm5_modify_principal(), check for
+entry->policy being null when KADM5_POLICY is included in the mask.
+
+CVE-2015-8630:
+
+In MIT krb5 1.12 and later, an authenticated attacker with permission
+to modify a principal entry can cause kadmind to dereference a null
+pointer by supplying a null policy value but including KADM5_POLICY in
+the mask.
+
+    CVSSv2 Vector: AV:N/AC:H/Au:S/C:N/I:N/A:C/E:POC/RL:OF/RC:C
+
+ticket: 8342 (new)
+target_version: 1.14-next
+target_version: 1.13-next
+tags: pullup
+---
+ src/lib/kadm5/srv/svr_principal.c | 12 ++++++++----
+ 1 file changed, 8 insertions(+), 4 deletions(-)
+
+diff --git a/src/lib/kadm5/srv/svr_principal.c b/src/lib/kadm5/srv/svr_principal.c
+index 5b95fa3..1d4365c 100644
+--- a/src/lib/kadm5/srv/svr_principal.c
++++ b/src/lib/kadm5/srv/svr_principal.c
+@@ -395,6 +395,8 @@ kadm5_create_principal_3(void *server_handle,
+     /*
+      * Argument sanity checking, and opening up the DB
+      */
++    if (entry == NULL)
++        return EINVAL;
+     if(!(mask & KADM5_PRINCIPAL) || (mask & KADM5_MOD_NAME) ||
+        (mask & KADM5_MOD_TIME) || (mask & KADM5_LAST_PWD_CHANGE) ||
+        (mask & KADM5_MKVNO) || (mask & KADM5_AUX_ATTRIBUTES) ||
+@@ -403,12 +405,12 @@ kadm5_create_principal_3(void *server_handle,
+         return KADM5_BAD_MASK;
+     if ((mask & KADM5_KEY_DATA) && entry->n_key_data != 0)
+         return KADM5_BAD_MASK;
++    if((mask & KADM5_POLICY) && entry->policy == NULL)
++        return KADM5_BAD_MASK;
+     if((mask & KADM5_POLICY) && (mask & KADM5_POLICY_CLR))
+         return KADM5_BAD_MASK;
+     if((mask & ~ALL_PRINC_MASK))
+         return KADM5_BAD_MASK;
+-    if (entry == NULL)
+-        return EINVAL;
+ 
+     /*
+      * Check to see if the principal exists
+@@ -643,6 +645,8 @@ kadm5_modify_principal(void *server_handle,
+ 
+     krb5_clear_error_message(handle->context);
+ 
++    if(entry == NULL)
++        return EINVAL;
+     if((mask & KADM5_PRINCIPAL) || (mask & KADM5_LAST_PWD_CHANGE) ||
+        (mask & KADM5_MOD_TIME) || (mask & KADM5_MOD_NAME) ||
+        (mask & KADM5_MKVNO) || (mask & KADM5_AUX_ATTRIBUTES) ||
+@@ -651,10 +655,10 @@ kadm5_modify_principal(void *server_handle,
+         return KADM5_BAD_MASK;
+     if((mask & ~ALL_PRINC_MASK))
+         return KADM5_BAD_MASK;
++    if((mask & KADM5_POLICY) && entry->policy == NULL)
++        return KADM5_BAD_MASK;
+     if((mask & KADM5_POLICY) && (mask & KADM5_POLICY_CLR))
+         return KADM5_BAD_MASK;
+-    if(entry == (kadm5_principal_ent_t) NULL)
+-        return EINVAL;
+     if (mask & KADM5_TL_DATA) {
+         tl_data_orig = entry->tl_data;
+         while (tl_data_orig) {
+-- 
+2.7.0.rc3
+
diff --git a/gnu/packages/patches/mit-krb5-CVE-2015-8631.patch b/gnu/packages/patches/mit-krb5-CVE-2015-8631.patch
new file mode 100644
index 0000000000..dd1eb2945c
--- /dev/null
+++ b/gnu/packages/patches/mit-krb5-CVE-2015-8631.patch
@@ -0,0 +1,576 @@
+Copied from Fedora.
+http://pkgs.fedoraproject.org/cgit/rpms/krb5.git/tree/krb5-CVE-2015-8631.patch?h=f22
+
+From 83ed75feba32e46f736fcce0d96a0445f29b96c2 Mon Sep 17 00:00:00 2001
+From: Greg Hudson <ghudson@mit.edu>
+Date: Fri, 8 Jan 2016 13:16:54 -0500
+Subject: [PATCH 3/3] Fix leaks in kadmin server stubs [CVE-2015-8631]
+
+In each kadmind server stub, initialize the client_name and
+server_name variables, and release them in the cleanup handler.  Many
+of the stubs will otherwise leak the client and server name if
+krb5_unparse_name() fails.  Also make sure to free the prime_arg
+variables in rename_principal_2_svc(), or we can leak the first one if
+unparsing the second one fails.  Discovered by Simo Sorce.
+
+CVE-2015-8631:
+
+In all versions of MIT krb5, an authenticated attacker can cause
+kadmind to leak memory by supplying a null principal name in a request
+which uses one.  Repeating these requests will eventually cause
+kadmind to exhaust all available memory.
+
+    CVSSv2 Vector: AV:N/AC:L/Au:S/C:N/I:N/A:C/E:POC/RL:OF/RC:C
+
+ticket: 8343 (new)
+target_version: 1.14-next
+target_version: 1.13-next
+tags: pullup
+---
+ src/kadmin/server/server_stubs.c | 151 ++++++++++++++++++++-------------------
+ 1 file changed, 77 insertions(+), 74 deletions(-)
+
+diff --git a/src/kadmin/server/server_stubs.c b/src/kadmin/server/server_stubs.c
+index 1879dc6..6ac797e 100644
+--- a/src/kadmin/server/server_stubs.c
++++ b/src/kadmin/server/server_stubs.c
+@@ -334,7 +334,8 @@ create_principal_2_svc(cprinc_arg *arg, struct svc_req *rqstp)
+ {
+     static generic_ret          ret;
+     char                        *prime_arg;
+-    gss_buffer_desc             client_name, service_name;
++    gss_buffer_desc             client_name = GSS_C_EMPTY_BUFFER;
++    gss_buffer_desc             service_name = GSS_C_EMPTY_BUFFER;
+     OM_uint32                   minor_stat;
+     kadm5_server_handle_t       handle;
+     restriction_t               *rp;
+@@ -382,10 +383,10 @@ create_principal_2_svc(cprinc_arg *arg, struct svc_req *rqstp)
+             krb5_free_error_message(handle->context, errmsg);
+     }
+     free(prime_arg);
+-    gss_release_buffer(&minor_stat, &client_name);
+-    gss_release_buffer(&minor_stat, &service_name);
+ 
+ exit_func:
++    gss_release_buffer(&minor_stat, &client_name);
++    gss_release_buffer(&minor_stat, &service_name);
+     free_server_handle(handle);
+     return &ret;
+ }
+@@ -395,7 +396,8 @@ create_principal3_2_svc(cprinc3_arg *arg, struct svc_req *rqstp)
+ {
+     static generic_ret          ret;
+     char                        *prime_arg;
+-    gss_buffer_desc             client_name, service_name;
++    gss_buffer_desc             client_name = GSS_C_EMPTY_BUFFER;
++    gss_buffer_desc             service_name = GSS_C_EMPTY_BUFFER;
+     OM_uint32                   minor_stat;
+     kadm5_server_handle_t       handle;
+     restriction_t               *rp;
+@@ -444,10 +446,10 @@ create_principal3_2_svc(cprinc3_arg *arg, struct svc_req *rqstp)
+             krb5_free_error_message(handle->context, errmsg);
+     }
+     free(prime_arg);
+-    gss_release_buffer(&minor_stat, &client_name);
+-    gss_release_buffer(&minor_stat, &service_name);
+ 
+ exit_func:
++    gss_release_buffer(&minor_stat, &client_name);
++    gss_release_buffer(&minor_stat, &service_name);
+     free_server_handle(handle);
+     return &ret;
+ }
+@@ -457,8 +459,8 @@ delete_principal_2_svc(dprinc_arg *arg, struct svc_req *rqstp)
+ {
+     static generic_ret              ret;
+     char                            *prime_arg;
+-    gss_buffer_desc                 client_name,
+-        service_name;
++    gss_buffer_desc                 client_name = GSS_C_EMPTY_BUFFER;
++    gss_buffer_desc                 service_name = GSS_C_EMPTY_BUFFER;
+     OM_uint32                       minor_stat;
+     kadm5_server_handle_t           handle;
+     const char                      *errmsg = NULL;
+@@ -501,10 +503,10 @@ delete_principal_2_svc(dprinc_arg *arg, struct svc_req *rqstp)
+ 
+     }
+     free(prime_arg);
+-    gss_release_buffer(&minor_stat, &client_name);
+-    gss_release_buffer(&minor_stat, &service_name);
+ 
+ exit_func:
++    gss_release_buffer(&minor_stat, &client_name);
++    gss_release_buffer(&minor_stat, &service_name);
+     free_server_handle(handle);
+     return &ret;
+ }
+@@ -514,8 +516,8 @@ modify_principal_2_svc(mprinc_arg *arg, struct svc_req *rqstp)
+ {
+     static generic_ret              ret;
+     char                            *prime_arg;
+-    gss_buffer_desc                 client_name,
+-        service_name;
++    gss_buffer_desc                 client_name = GSS_C_EMPTY_BUFFER;
++    gss_buffer_desc                 service_name = GSS_C_EMPTY_BUFFER;
+     OM_uint32                       minor_stat;
+     kadm5_server_handle_t           handle;
+     restriction_t                   *rp;
+@@ -559,9 +561,9 @@ modify_principal_2_svc(mprinc_arg *arg, struct svc_req *rqstp)
+             krb5_free_error_message(handle->context, errmsg);
+     }
+     free(prime_arg);
++exit_func:
+     gss_release_buffer(&minor_stat, &client_name);
+     gss_release_buffer(&minor_stat, &service_name);
+-exit_func:
+     free_server_handle(handle);
+     return &ret;
+ }
+@@ -570,10 +572,9 @@ generic_ret *
+ rename_principal_2_svc(rprinc_arg *arg, struct svc_req *rqstp)
+ {
+     static generic_ret          ret;
+-    char                        *prime_arg1,
+-        *prime_arg2;
+-    gss_buffer_desc             client_name,
+-        service_name;
++    char                        *prime_arg1 = NULL, *prime_arg2 = NULL;
++    gss_buffer_desc             client_name = GSS_C_EMPTY_BUFFER;
++    gss_buffer_desc             service_name = GSS_C_EMPTY_BUFFER;
+     OM_uint32                   minor_stat;
+     kadm5_server_handle_t       handle;
+     restriction_t               *rp;
+@@ -655,11 +656,11 @@ rename_principal_2_svc(rprinc_arg *arg, struct svc_req *rqstp)
+             krb5_free_error_message(handle->context, errmsg);
+ 
+     }
++exit_func:
+     free(prime_arg1);
+     free(prime_arg2);
+     gss_release_buffer(&minor_stat, &client_name);
+     gss_release_buffer(&minor_stat, &service_name);
+-exit_func:
+     free_server_handle(handle);
+     return &ret;
+ }
+@@ -669,8 +670,8 @@ get_principal_2_svc(gprinc_arg *arg, struct svc_req *rqstp)
+ {
+     static gprinc_ret               ret;
+     char                            *prime_arg, *funcname;
+-    gss_buffer_desc                 client_name,
+-        service_name;
++    gss_buffer_desc                 client_name = GSS_C_EMPTY_BUFFER;
++    gss_buffer_desc                 service_name = GSS_C_EMPTY_BUFFER;
+     OM_uint32                       minor_stat;
+     kadm5_server_handle_t           handle;
+     const char                      *errmsg = NULL;
+@@ -719,9 +720,9 @@ get_principal_2_svc(gprinc_arg *arg, struct svc_req *rqstp)
+             krb5_free_error_message(handle->context, errmsg);
+     }
+     free(prime_arg);
++exit_func:
+     gss_release_buffer(&minor_stat, &client_name);
+     gss_release_buffer(&minor_stat, &service_name);
+-exit_func:
+     free_server_handle(handle);
+     return &ret;
+ }
+@@ -731,8 +732,8 @@ get_princs_2_svc(gprincs_arg *arg, struct svc_req *rqstp)
+ {
+     static gprincs_ret              ret;
+     char                            *prime_arg;
+-    gss_buffer_desc                 client_name,
+-        service_name;
++    gss_buffer_desc                 client_name = GSS_C_EMPTY_BUFFER;
++    gss_buffer_desc                 service_name = GSS_C_EMPTY_BUFFER;
+     OM_uint32                       minor_stat;
+     kadm5_server_handle_t           handle;
+     const char                      *errmsg = NULL;
+@@ -777,9 +778,9 @@ get_princs_2_svc(gprincs_arg *arg, struct svc_req *rqstp)
+             krb5_free_error_message(handle->context, errmsg);
+ 
+     }
++exit_func:
+     gss_release_buffer(&minor_stat, &client_name);
+     gss_release_buffer(&minor_stat, &service_name);
+-exit_func:
+     free_server_handle(handle);
+     return &ret;
+ }
+@@ -789,8 +790,8 @@ chpass_principal_2_svc(chpass_arg *arg, struct svc_req *rqstp)
+ {
+     static generic_ret              ret;
+     char                            *prime_arg;
+-    gss_buffer_desc                 client_name,
+-        service_name;
++    gss_buffer_desc                 client_name = GSS_C_EMPTY_BUFFER;
++    gss_buffer_desc                 service_name = GSS_C_EMPTY_BUFFER;
+     OM_uint32                       minor_stat;
+     kadm5_server_handle_t           handle;
+     const char                      *errmsg = NULL;
+@@ -840,9 +841,9 @@ chpass_principal_2_svc(chpass_arg *arg, struct svc_req *rqstp)
+     }
+ 
+     free(prime_arg);
++exit_func:
+     gss_release_buffer(&minor_stat, &client_name);
+     gss_release_buffer(&minor_stat, &service_name);
+-exit_func:
+     free_server_handle(handle);
+     return &ret;
+ }
+@@ -852,8 +853,8 @@ chpass_principal3_2_svc(chpass3_arg *arg, struct svc_req *rqstp)
+ {
+     static generic_ret              ret;
+     char                            *prime_arg;
+-    gss_buffer_desc                 client_name,
+-        service_name;
++    gss_buffer_desc                 client_name = GSS_C_EMPTY_BUFFER;
++    gss_buffer_desc                 service_name = GSS_C_EMPTY_BUFFER;
+     OM_uint32                       minor_stat;
+     kadm5_server_handle_t           handle;
+     const char                      *errmsg = NULL;
+@@ -909,9 +910,9 @@ chpass_principal3_2_svc(chpass3_arg *arg, struct svc_req *rqstp)
+     }
+ 
+     free(prime_arg);
++exit_func:
+     gss_release_buffer(&minor_stat, &client_name);
+     gss_release_buffer(&minor_stat, &service_name);
+-exit_func:
+     free_server_handle(handle);
+     return &ret;
+ }
+@@ -921,8 +922,8 @@ setv4key_principal_2_svc(setv4key_arg *arg, struct svc_req *rqstp)
+ {
+     static generic_ret              ret;
+     char                            *prime_arg;
+-    gss_buffer_desc                 client_name,
+-        service_name;
++    gss_buffer_desc                 client_name = GSS_C_EMPTY_BUFFER;
++    gss_buffer_desc                 service_name = GSS_C_EMPTY_BUFFER;
+     OM_uint32                       minor_stat;
+     kadm5_server_handle_t           handle;
+     const char                      *errmsg = NULL;
+@@ -969,9 +970,9 @@ setv4key_principal_2_svc(setv4key_arg *arg, struct svc_req *rqstp)
+     }
+ 
+     free(prime_arg);
++exit_func:
+     gss_release_buffer(&minor_stat, &client_name);
+     gss_release_buffer(&minor_stat, &service_name);
+-exit_func:
+     free_server_handle(handle);
+     return &ret;
+ }
+@@ -981,8 +982,8 @@ setkey_principal_2_svc(setkey_arg *arg, struct svc_req *rqstp)
+ {
+     static generic_ret              ret;
+     char                            *prime_arg;
+-    gss_buffer_desc                 client_name,
+-        service_name;
++    gss_buffer_desc                 client_name = GSS_C_EMPTY_BUFFER;
++    gss_buffer_desc                 service_name = GSS_C_EMPTY_BUFFER;
+     OM_uint32                       minor_stat;
+     kadm5_server_handle_t           handle;
+     const char                      *errmsg = NULL;
+@@ -1029,9 +1030,9 @@ setkey_principal_2_svc(setkey_arg *arg, struct svc_req *rqstp)
+     }
+ 
+     free(prime_arg);
++exit_func:
+     gss_release_buffer(&minor_stat, &client_name);
+     gss_release_buffer(&minor_stat, &service_name);
+-exit_func:
+     free_server_handle(handle);
+     return &ret;
+ }
+@@ -1041,8 +1042,8 @@ setkey_principal3_2_svc(setkey3_arg *arg, struct svc_req *rqstp)
+ {
+     static generic_ret              ret;
+     char                            *prime_arg;
+-    gss_buffer_desc                 client_name,
+-        service_name;
++    gss_buffer_desc                 client_name = GSS_C_EMPTY_BUFFER;
++    gss_buffer_desc                 service_name = GSS_C_EMPTY_BUFFER;
+     OM_uint32                       minor_stat;
+     kadm5_server_handle_t           handle;
+     const char                      *errmsg = NULL;
+@@ -1092,9 +1093,9 @@ setkey_principal3_2_svc(setkey3_arg *arg, struct svc_req *rqstp)
+     }
+ 
+     free(prime_arg);
++exit_func:
+     gss_release_buffer(&minor_stat, &client_name);
+     gss_release_buffer(&minor_stat, &service_name);
+-exit_func:
+     free_server_handle(handle);
+     return &ret;
+ }
+@@ -1106,8 +1107,8 @@ chrand_principal_2_svc(chrand_arg *arg, struct svc_req *rqstp)
+     krb5_keyblock               *k;
+     int                         nkeys;
+     char                        *prime_arg, *funcname;
+-    gss_buffer_desc             client_name,
+-        service_name;
++    gss_buffer_desc             client_name = GSS_C_EMPTY_BUFFER;
++    gss_buffer_desc             service_name = GSS_C_EMPTY_BUFFER;
+     OM_uint32                   minor_stat;
+     kadm5_server_handle_t       handle;
+     const char                  *errmsg = NULL;
+@@ -1164,9 +1165,9 @@ chrand_principal_2_svc(chrand_arg *arg, struct svc_req *rqstp)
+             krb5_free_error_message(handle->context, errmsg);
+     }
+     free(prime_arg);
++exit_func:
+     gss_release_buffer(&minor_stat, &client_name);
+     gss_release_buffer(&minor_stat, &service_name);
+-exit_func:
+     free_server_handle(handle);
+     return &ret;
+ }
+@@ -1178,8 +1179,8 @@ chrand_principal3_2_svc(chrand3_arg *arg, struct svc_req *rqstp)
+     krb5_keyblock               *k;
+     int                         nkeys;
+     char                        *prime_arg, *funcname;
+-    gss_buffer_desc             client_name,
+-        service_name;
++    gss_buffer_desc             client_name = GSS_C_EMPTY_BUFFER;
++    gss_buffer_desc             service_name = GSS_C_EMPTY_BUFFER;
+     OM_uint32                   minor_stat;
+     kadm5_server_handle_t       handle;
+     const char                  *errmsg = NULL;
+@@ -1241,9 +1242,9 @@ chrand_principal3_2_svc(chrand3_arg *arg, struct svc_req *rqstp)
+             krb5_free_error_message(handle->context, errmsg);
+     }
+     free(prime_arg);
++exit_func:
+     gss_release_buffer(&minor_stat, &client_name);
+     gss_release_buffer(&minor_stat, &service_name);
+-exit_func:
+     free_server_handle(handle);
+     return &ret;
+ }
+@@ -1253,8 +1254,8 @@ create_policy_2_svc(cpol_arg *arg, struct svc_req *rqstp)
+ {
+     static generic_ret              ret;
+     char                            *prime_arg;
+-    gss_buffer_desc                 client_name,
+-        service_name;
++    gss_buffer_desc                 client_name = GSS_C_EMPTY_BUFFER;
++    gss_buffer_desc                 service_name = GSS_C_EMPTY_BUFFER;
+     OM_uint32                       minor_stat;
+     kadm5_server_handle_t           handle;
+     const char                      *errmsg = NULL;
+@@ -1295,9 +1296,9 @@ create_policy_2_svc(cpol_arg *arg, struct svc_req *rqstp)
+         if (errmsg != NULL)
+             krb5_free_error_message(handle->context, errmsg);
+     }
++exit_func:
+     gss_release_buffer(&minor_stat, &client_name);
+     gss_release_buffer(&minor_stat, &service_name);
+-exit_func:
+     free_server_handle(handle);
+     return &ret;
+ }
+@@ -1307,8 +1308,8 @@ delete_policy_2_svc(dpol_arg *arg, struct svc_req *rqstp)
+ {
+     static generic_ret              ret;
+     char                            *prime_arg;
+-    gss_buffer_desc                 client_name,
+-        service_name;
++    gss_buffer_desc                 client_name = GSS_C_EMPTY_BUFFER;
++    gss_buffer_desc                 service_name = GSS_C_EMPTY_BUFFER;
+     OM_uint32                       minor_stat;
+     kadm5_server_handle_t           handle;
+     const char                      *errmsg = NULL;
+@@ -1347,9 +1348,9 @@ delete_policy_2_svc(dpol_arg *arg, struct svc_req *rqstp)
+         if (errmsg != NULL)
+             krb5_free_error_message(handle->context, errmsg);
+     }
++exit_func:
+     gss_release_buffer(&minor_stat, &client_name);
+     gss_release_buffer(&minor_stat, &service_name);
+-exit_func:
+     free_server_handle(handle);
+     return &ret;
+ }
+@@ -1359,8 +1360,8 @@ modify_policy_2_svc(mpol_arg *arg, struct svc_req *rqstp)
+ {
+     static generic_ret              ret;
+     char                            *prime_arg;
+-    gss_buffer_desc                 client_name,
+-        service_name;
++    gss_buffer_desc                 client_name = GSS_C_EMPTY_BUFFER;
++    gss_buffer_desc                 service_name = GSS_C_EMPTY_BUFFER;
+     OM_uint32                       minor_stat;
+     kadm5_server_handle_t           handle;
+     const char                      *errmsg = NULL;
+@@ -1400,9 +1401,9 @@ modify_policy_2_svc(mpol_arg *arg, struct svc_req *rqstp)
+         if (errmsg != NULL)
+             krb5_free_error_message(handle->context, errmsg);
+     }
++exit_func:
+     gss_release_buffer(&minor_stat, &client_name);
+     gss_release_buffer(&minor_stat, &service_name);
+-exit_func:
+     free_server_handle(handle);
+     return &ret;
+ }
+@@ -1413,8 +1414,8 @@ get_policy_2_svc(gpol_arg *arg, struct svc_req *rqstp)
+     static gpol_ret             ret;
+     kadm5_ret_t         ret2;
+     char                        *prime_arg, *funcname;
+-    gss_buffer_desc             client_name,
+-        service_name;
++    gss_buffer_desc             client_name = GSS_C_EMPTY_BUFFER;
++    gss_buffer_desc             service_name = GSS_C_EMPTY_BUFFER;
+     OM_uint32                   minor_stat;
+     kadm5_principal_ent_rec     caller_ent;
+     kadm5_server_handle_t       handle;
+@@ -1475,9 +1476,9 @@ get_policy_2_svc(gpol_arg *arg, struct svc_req *rqstp)
+         log_unauth(funcname, prime_arg,
+                    &client_name, &service_name, rqstp);
+     }
++exit_func:
+     gss_release_buffer(&minor_stat, &client_name);
+     gss_release_buffer(&minor_stat, &service_name);
+-exit_func:
+     free_server_handle(handle);
+     return &ret;
+ 
+@@ -1488,8 +1489,8 @@ get_pols_2_svc(gpols_arg *arg, struct svc_req *rqstp)
+ {
+     static gpols_ret                ret;
+     char                            *prime_arg;
+-    gss_buffer_desc                 client_name,
+-        service_name;
++    gss_buffer_desc                 client_name = GSS_C_EMPTY_BUFFER;
++    gss_buffer_desc                 service_name = GSS_C_EMPTY_BUFFER;
+     OM_uint32                       minor_stat;
+     kadm5_server_handle_t           handle;
+     const char                      *errmsg = NULL;
+@@ -1531,9 +1532,9 @@ get_pols_2_svc(gpols_arg *arg, struct svc_req *rqstp)
+         if (errmsg != NULL)
+             krb5_free_error_message(handle->context, errmsg);
+     }
++exit_func:
+     gss_release_buffer(&minor_stat, &client_name);
+     gss_release_buffer(&minor_stat, &service_name);
+-exit_func:
+     free_server_handle(handle);
+     return &ret;
+ }
+@@ -1541,7 +1542,8 @@ exit_func:
+ getprivs_ret * get_privs_2_svc(krb5_ui_4 *arg, struct svc_req *rqstp)
+ {
+     static getprivs_ret            ret;
+-    gss_buffer_desc                client_name, service_name;
++    gss_buffer_desc                client_name = GSS_C_EMPTY_BUFFER;
++    gss_buffer_desc                service_name = GSS_C_EMPTY_BUFFER;
+     OM_uint32                      minor_stat;
+     kadm5_server_handle_t          handle;
+     const char                     *errmsg = NULL;
+@@ -1571,9 +1573,9 @@ getprivs_ret * get_privs_2_svc(krb5_ui_4 *arg, struct svc_req *rqstp)
+     if (errmsg != NULL)
+         krb5_free_error_message(handle->context, errmsg);
+ 
++exit_func:
+     gss_release_buffer(&minor_stat, &client_name);
+     gss_release_buffer(&minor_stat, &service_name);
+-exit_func:
+     free_server_handle(handle);
+     return &ret;
+ }
+@@ -1583,7 +1585,8 @@ purgekeys_2_svc(purgekeys_arg *arg, struct svc_req *rqstp)
+ {
+     static generic_ret          ret;
+     char                        *prime_arg, *funcname;
+-    gss_buffer_desc             client_name, service_name;
++    gss_buffer_desc             client_name = GSS_C_EMPTY_BUFFER;
++    gss_buffer_desc             service_name = GSS_C_EMPTY_BUFFER;
+     OM_uint32                   minor_stat;
+     kadm5_server_handle_t       handle;
+ 
+@@ -1629,9 +1632,9 @@ purgekeys_2_svc(purgekeys_arg *arg, struct svc_req *rqstp)
+             krb5_free_error_message(handle->context, errmsg);
+     }
+     free(prime_arg);
++exit_func:
+     gss_release_buffer(&minor_stat, &client_name);
+     gss_release_buffer(&minor_stat, &service_name);
+-exit_func:
+     free_server_handle(handle);
+     return &ret;
+ }
+@@ -1641,8 +1644,8 @@ get_strings_2_svc(gstrings_arg *arg, struct svc_req *rqstp)
+ {
+     static gstrings_ret             ret;
+     char                            *prime_arg;
+-    gss_buffer_desc                 client_name,
+-        service_name;
++    gss_buffer_desc                 client_name = GSS_C_EMPTY_BUFFER;
++    gss_buffer_desc                 service_name = GSS_C_EMPTY_BUFFER;
+     OM_uint32                       minor_stat;
+     kadm5_server_handle_t           handle;
+     const char                      *errmsg = NULL;
+@@ -1688,9 +1691,9 @@ get_strings_2_svc(gstrings_arg *arg, struct svc_req *rqstp)
+             krb5_free_error_message(handle->context, errmsg);
+     }
+     free(prime_arg);
++exit_func:
+     gss_release_buffer(&minor_stat, &client_name);
+     gss_release_buffer(&minor_stat, &service_name);
+-exit_func:
+     free_server_handle(handle);
+     return &ret;
+ }
+@@ -1700,8 +1703,8 @@ set_string_2_svc(sstring_arg *arg, struct svc_req *rqstp)
+ {
+     static generic_ret              ret;
+     char                            *prime_arg;
+-    gss_buffer_desc                 client_name,
+-        service_name;
++    gss_buffer_desc                 client_name = GSS_C_EMPTY_BUFFER;
++    gss_buffer_desc                 service_name = GSS_C_EMPTY_BUFFER;
+     OM_uint32                       minor_stat;
+     kadm5_server_handle_t           handle;
+     const char                      *errmsg = NULL;
+@@ -1744,9 +1747,9 @@ set_string_2_svc(sstring_arg *arg, struct svc_req *rqstp)
+             krb5_free_error_message(handle->context, errmsg);
+     }
+     free(prime_arg);
++exit_func:
+     gss_release_buffer(&minor_stat, &client_name);
+     gss_release_buffer(&minor_stat, &service_name);
+-exit_func:
+     free_server_handle(handle);
+     return &ret;
+ }
+@@ -1754,8 +1757,8 @@ exit_func:
+ generic_ret *init_2_svc(krb5_ui_4 *arg, struct svc_req *rqstp)
+ {
+     static generic_ret         ret;
+-    gss_buffer_desc            client_name,
+-        service_name;
++    gss_buffer_desc            client_name = GSS_C_EMPTY_BUFFER;
++    gss_buffer_desc            service_name = GSS_C_EMPTY_BUFFER;
+     kadm5_server_handle_t      handle;
+     OM_uint32                  minor_stat;
+     const char                 *errmsg = NULL;
+@@ -1797,10 +1800,10 @@ generic_ret *init_2_svc(krb5_ui_4 *arg, struct svc_req *rqstp)
+                      rqstp->rq_cred.oa_flavor);
+     if (errmsg != NULL)
+         krb5_free_error_message(NULL, errmsg);
+-    gss_release_buffer(&minor_stat, &client_name);
+-    gss_release_buffer(&minor_stat, &service_name);
+ 
+ exit_func:
++    gss_release_buffer(&minor_stat, &client_name);
++    gss_release_buffer(&minor_stat, &service_name);
+     return(&ret);
+ }
+ 
+-- 
+2.7.0.rc3
+
diff --git a/gnu/packages/patches/mit-krb5-init-context-null-spnego.patch b/gnu/packages/patches/mit-krb5-init-context-null-spnego.patch
new file mode 100644
index 0000000000..195db38d08
--- /dev/null
+++ b/gnu/packages/patches/mit-krb5-init-context-null-spnego.patch
@@ -0,0 +1,49 @@
+Copied from Fedora.
+http://pkgs.fedoraproject.org/cgit/rpms/krb5.git/tree/krb5-init_context_null_spnego.patch?h=f22
+
+From 3beb564cea3d219efcf71682b6576cad548c2d23 Mon Sep 17 00:00:00 2001
+From: Simo Sorce <simo@redhat.com>
+Date: Tue, 5 Jan 2016 12:11:59 -0500
+Subject: [PATCH] Check internal context on init context errors
+
+If the mechanism deletes the internal context handle on error, the
+mechglue must do the same with the union context, to avoid crashes if
+the application calls other functions with this invalid union context.
+
+[ghudson@mit.edu: edit commit message and code comment]
+
+ticket: 8337 (new)
+target_version: 1.14-next
+target_version: 1.13-next
+tags: pullup
+---
+ src/lib/gssapi/mechglue/g_init_sec_context.c | 11 +++++++----
+ 1 file changed, 7 insertions(+), 4 deletions(-)
+
+diff --git a/src/lib/gssapi/mechglue/g_init_sec_context.c b/src/lib/gssapi/mechglue/g_init_sec_context.c
+index aaae767..9f154b8 100644
+--- a/src/lib/gssapi/mechglue/g_init_sec_context.c
++++ b/src/lib/gssapi/mechglue/g_init_sec_context.c
+@@ -224,12 +224,15 @@ OM_uint32 *		time_rec;
+ 
+     if (status != GSS_S_COMPLETE && status != GSS_S_CONTINUE_NEEDED) {
+ 	/*
+-	 * the spec says (the preferred) method is to delete all
+-	 * context info on the first call to init, and on all
+-	 * subsequent calls make the caller responsible for
+-	 * calling gss_delete_sec_context
++	 * The spec says the preferred method is to delete all context info on
++	 * the first call to init, and on all subsequent calls make the caller
++	 * responsible for calling gss_delete_sec_context.  However, if the
++	 * mechanism decided to delete the internal context, we should also
++	 * delete the union context.
+ 	 */
+ 	map_error(minor_status, mech);
++	if (union_ctx_id->internal_ctx_id == GSS_C_NO_CONTEXT)
++	    *context_handle = GSS_C_NO_CONTEXT;
+ 	if (*context_handle == GSS_C_NO_CONTEXT) {
+ 	    free(union_ctx_id->mech_type->elements);
+ 	    free(union_ctx_id->mech_type);
+-- 
+2.6.4
+