gnu: libtiff: Update replacement to 4.0.8 [security fixes].

See 'ChangeLog' in the source distribution for more information about
the bugs and security issues fixed in this release.

* gnu/packages/image.scm (libtiff)[replacement]: Replace with libtiff-4.0.8.
(libtiff/fixed): Replace with ...
(libtiff-4.0.8): New variable.
* gnu/packages/patches/libtiff-CVE-2017-7593.patch,
gnu/packages/patches/libtiff-CVE-2017-7594.patch,
gnu/packages/patches/libtiff-multiple-UBSAN-crashes.patch: Delete files.
* gnu/local.mk (dist_patch_DATA): Remove them.

4 files changed, 9 insertions, 625 deletions

diff --git a/gnu/packages/image.scm b/gnu/packages/image.scm
index 86902d5680..fe9e457f34 100644
--- a/gnu/packages/image.scm
+++ b/gnu/packages/image.scm
@@ -335,7 +335,7 @@ extracting icontainer icon files.")
 (define-public libtiff
   (package
    (name "libtiff")
-   (replacement libtiff/fixed)
+   (replacement libtiff-4.0.8)
    (version "4.0.7")
    (source (origin
             (method url-fetch)
@@ -384,18 +384,18 @@ collection of tools for doing simple manipulations of TIFF images.")
                                   "See COPYRIGHT in the distribution."))
    (home-page "http://www.simplesystems.org/libtiff/")))
 
-(define libtiff/fixed
+(define libtiff-4.0.8
   (package
     (inherit libtiff)
+    (version "4.0.8")
     (source
      (origin
-       (inherit (package-source libtiff))
-       (patches
-        (append
-         (origin-patches (package-source libtiff))
-         (search-patches "libtiff-CVE-2017-7593.patch"
-                         "libtiff-CVE-2017-7594.patch"
-                         "libtiff-multiple-UBSAN-crashes.patch")))))))
+       (method url-fetch)
+       (uri (string-append "http://download.osgeo.org/libtiff/tiff-"
+                           version ".tar.gz"))
+       (sha256
+        (base32
+         "0419mh6kkhz5fkyl77gv0in8x4d2jpdpfs147y8mj86rrjlabmsr"))))))
 
 (define-public libwmf
   (package
diff --git a/gnu/packages/patches/libtiff-CVE-2017-7593.patch b/gnu/packages/patches/libtiff-CVE-2017-7593.patch
deleted file mode 100644
index 496efb73b9..0000000000
--- a/gnu/packages/patches/libtiff-CVE-2017-7593.patch
+++ /dev/null
@@ -1,113 +0,0 @@
-Fixes CVE-2017-7593 (Potential uninitialized-memory access from tif_rawdata):
-
-http://bugzilla.maptools.org/show_bug.cgi?id=2651
-https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7593
-https://security-tracker.debian.org/tracker/CVE-2017-7593
-
-2017-01-11 Even Rouault <even.rouault at spatialys.com>
-
-        * libtiff/tiffio.h, tif_unix.c, tif_win32.c, tif_vms.c: add
-        _TIFFcalloc()
-
-        * libtiff/tif_read.c: TIFFReadBufferSetup(): use _TIFFcalloc() to zero
-        initialize tif_rawdata.
-        Fixes http://bugzilla.maptools.org/show_bug.cgi?id=2651
-
-/cvs/maptools/cvsroot/libtiff/ChangeLog,v  <--  ChangeLog
-new revision: 1.1208; previous revision: 1.1207
-/cvs/maptools/cvsroot/libtiff/libtiff/tif_read.c,v  <--  libtiff/tif_read.c
-new revision: 1.53; previous revision: 1.52
-/cvs/maptools/cvsroot/libtiff/libtiff/tif_unix.c,v  <--  libtiff/tif_unix.c
-new revision: 1.28; previous revision: 1.27
-/cvs/maptools/cvsroot/libtiff/libtiff/tif_vms.c,v  <--  libtiff/tif_vms.c
-new revision: 1.14; previous revision: 1.13
-/cvs/maptools/cvsroot/libtiff/libtiff/tif_win32.c,v  <--  libtiff/tif_win32.c
-new revision: 1.42; previous revision: 1.41
-/cvs/maptools/cvsroot/libtiff/libtiff/tiffio.h,v  <--  libtiff/tiffio.h
-new revision: 1.94; previous revision: 1.93
-
-diff -ru tiff-4.0.7/libtiff/tiffio.h tiff-4.0.7.new/libtiff/tiffio.h
---- tiff-4.0.7/libtiff/tiffio.h	1969-12-31 19:00:00.000000000 -0500
-+++ tiff-4.0.7.new/libtiff/tiffio.h	2017-05-05 19:08:03.772999790 -0400
-@@ -1,4 +1,4 @@
--/* $Id: tiffio.h,v 1.92 2016-01-23 21:20:34 erouault Exp $ */
-+/* $Id: tiffio.h,v 1.94 2017-01-11 19:02:49 erouault Exp $ */
- 
- /*
-  * Copyright (c) 1988-1997 Sam Leffler
-@@ -293,6 +293,7 @@
-  */
- 
- extern void* _TIFFmalloc(tmsize_t s);
-+extern void* _TIFFcalloc(tmsize_t nmemb, tmsize_t siz);
- extern void* _TIFFrealloc(void* p, tmsize_t s);
- extern void _TIFFmemset(void* p, int v, tmsize_t c);
- extern void _TIFFmemcpy(void* d, const void* s, tmsize_t c);
-diff -ru tiff-4.0.7/libtiff/tif_read.c tiff-4.0.7.new/libtiff/tif_read.c
---- tiff-4.0.7/libtiff/tif_read.c	2017-05-05 19:04:09.740966642 -0400
-+++ tiff-4.0.7.new/libtiff/tif_read.c	2017-05-05 18:59:11.070709441 -0400
-@@ -1,4 +1,4 @@
--/* $Id: tif_read.c,v 1.50 2016-12-02 21:56:56 erouault Exp $ */
-+/* $Id: tif_read.c,v 1.53 2017-01-11 19:02:49 erouault Exp $ */
- 
- /*
-  * Copyright (c) 1988-1997 Sam Leffler
-@@ -976,7 +976,9 @@
- 				"Invalid buffer size");
- 		    return (0);
- 		}
--		tif->tif_rawdata = (uint8*) _TIFFmalloc(tif->tif_rawdatasize);
-+		/* Initialize to zero to avoid uninitialized buffers in case of */
-+		/* short reads (http://bugzilla.maptools.org/show_bug.cgi?id=2651) */
-+		tif->tif_rawdata = (uint8*) _TIFFcalloc(1, tif->tif_rawdatasize);
- 		tif->tif_flags |= TIFF_MYBUFFER;
- 	}
- 	if (tif->tif_rawdata == NULL) {
-diff -ru tiff-4.0.7/libtiff/tif_unix.c tiff-4.0.7.new/libtiff/tif_unix.c
---- tiff-4.0.7/libtiff/tif_unix.c	1969-12-31 19:00:00.000000000 -0500
-+++ tiff-4.0.7.new/libtiff/tif_unix.c	2017-05-05 19:10:48.302645187 -0400
-@@ -1,4 +1,4 @@
--/* $Id: tif_unix.c,v 1.27 2015-08-19 02:31:04 bfriesen Exp $ */
-+/* $Id: tif_unix.c,v 1.28 2017-01-11 19:02:49 erouault Exp $ */
- 
- /*
-  * Copyright (c) 1988-1997 Sam Leffler
-@@ -316,6 +316,14 @@
- 	return (malloc((size_t) s));
- }
- 
-+void* _TIFFcalloc(tmsize_t nmemb, tmsize_t siz)
-+{
-+    if( nmemb == 0 || siz == 0 )
-+        return ((void *) NULL);
-+
-+    return calloc((size_t) nmemb, (size_t)siz);
-+}
-+
- void
- _TIFFfree(void* p)
- {
-diff -ru tiff-4.0.7/libtiff/tif_win32.c tiff-4.0.7.new/libtiff/tif_win32.c
---- tiff-4.0.7/libtiff/tif_win32.c	1969-12-31 19:00:00.000000000 -0500
-+++ tiff-4.0.7.new/libtiff/tif_win32.c	2017-05-05 19:13:06.903399627 -0400
-@@ -1,4 +1,4 @@
--/* $Id: tif_win32.c,v 1.41 2015-08-23 20:12:44 bfriesen Exp $ */
-+/* $Id: tif_win32.c,v 1.42 2017-01-11 19:02:49 erouault Exp $ */
- 
- /*
-  * Copyright (c) 1988-1997 Sam Leffler
-@@ -360,6 +360,14 @@
- 	return (malloc((size_t) s));
- }
- 
-+void* _TIFFcalloc(tmsize_t nmemb, tmsize_t siz)
-+{
-+    if( nmemb == 0 || siz == 0 )
-+        return ((void *) NULL);
-+
-+    return calloc((size_t) nmemb, (size_t)siz);
-+}
-+
- void
- _TIFFfree(void* p)
- {
diff --git a/gnu/packages/patches/libtiff-CVE-2017-7594.patch b/gnu/packages/patches/libtiff-CVE-2017-7594.patch
deleted file mode 100644
index d17997d447..0000000000
--- a/gnu/packages/patches/libtiff-CVE-2017-7594.patch
+++ /dev/null
@@ -1,54 +0,0 @@
-Fixes CVE-2017-7594 (Direct leak in tif_ojpeg.c):
-
-http://bugzilla.maptools.org/show_bug.cgi?id=2659
-https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7594
-https://security-tracker.debian.org/tracker/CVE-2017-7594
-
-2017-01-12 Even Rouault <even.rouault at spatialys.com>
-
-        * libtiff/tif_ojpeg.c: fix leak in OJPEGReadHeaderInfoSecTablesAcTable
-        when read fails.
-        Patch by Nicolás Peña.
-        Fixes http://bugzilla.maptools.org/show_bug.cgi?id=2659
-
-/cvs/maptools/cvsroot/libtiff/ChangeLog,v  <--  ChangeLog
-new revision: 1.1212; previous revision: 1.1211
-/cvs/maptools/cvsroot/libtiff/libtiff/tif_ojpeg.c,v  <--  libtiff/tif_ojpeg.c
-new revision: 1.67; previous revision: 1.66
-
-Index: libtiff/libtiff/tif_ojpeg.c
-===================================================================
-RCS file: /cvs/maptools/cvsroot/libtiff/libtiff/tif_ojpeg.c,v
-retrieving revision 1.67
-retrieving revision 1.68
-diff -u -r1.67 -r1.68
---- libtiff/libtiff/tif_ojpeg.c	12 Jan 2017 17:43:26 -0000	1.67
-+++ libtiff/libtiff/tif_ojpeg.c	12 Jan 2017 19:23:20 -0000	1.68
-@@ -1,4 +1,4 @@
--/* $Id: tif_ojpeg.c,v 1.66 2016-12-03 11:15:18 erouault Exp $ */
-+/* $Id: tif_ojpeg.c,v 1.68 2017-01-12 19:23:20 erouault Exp $ */
- 
- /* WARNING: The type of JPEG encapsulation defined by the TIFF Version 6.0
-    specification is now totally obsolete and deprecated for new applications and
-@@ -1790,7 +1790,10 @@
- 			TIFFSeekFile(tif,sp->qtable_offset[m],SEEK_SET); 
- 			p=(uint32)TIFFReadFile(tif,&ob[sizeof(uint32)+5],64);
- 			if (p!=64)
-+                        {
-+                                _TIFFfree(ob);
- 				return(0);
-+                        }
- 			sp->qtable[m]=ob;
- 			sp->sof_tq[m]=m;
- 		}
-@@ -1854,7 +1857,10 @@
- 				rb[sizeof(uint32)+5+n]=o[n];
- 			p=(uint32)TIFFReadFile(tif,&(rb[sizeof(uint32)+21]),q);
- 			if (p!=q)
-+                        {
-+                                _TIFFfree(rb);
- 				return(0);
-+                        }
- 			sp->dctable[m]=rb;
- 			sp->sos_tda[m]=(m<<4);
- 		}
diff --git a/gnu/packages/patches/libtiff-multiple-UBSAN-crashes.patch b/gnu/packages/patches/libtiff-multiple-UBSAN-crashes.patch
deleted file mode 100644
index 2f4509f386..0000000000
--- a/gnu/packages/patches/libtiff-multiple-UBSAN-crashes.patch
+++ /dev/null
@@ -1,449 +0,0 @@
-Fixes CVE-2017-{7595,7596,7597,7598,7599,7600,7601,7602}:
-
-https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7595
-https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7596
-https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7597
-https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7598
-https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7599
-https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7600
-https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7601
-https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7602
-
-2017-01-11 Even Rouault <even.rouault at spatialys.com>
-
-        * libtiff/tif_dir.c, tif_dirread.c, tif_dirwrite.c: implement various
-        clampings
-        of double to other data types to avoid undefined behaviour if the
-        output range
-        isn't big enough to hold the input value.
-        Fixes http://bugzilla.maptools.org/show_bug.cgi?id=2643
-        http://bugzilla.maptools.org/show_bug.cgi?id=2642
-        http://bugzilla.maptools.org/show_bug.cgi?id=2646
-        http://bugzilla.maptools.org/show_bug.cgi?id=2647
-
-/cvs/maptools/cvsroot/libtiff/ChangeLog,v  <--  ChangeLog
-new revision: 1.1204; previous revision: 1.1203
-/cvs/maptools/cvsroot/libtiff/libtiff/tif_dir.c,v  <--  libtiff/tif_dir.c
-new revision: 1.129; previous revision: 1.128
-/cvs/maptools/cvsroot/libtiff/libtiff/tif_dirread.c,v  <-- libtiff/tif_dirread.c
-new revision: 1.207; previous revision: 1.206
-/cvs/maptools/cvsroot/libtiff/libtiff/tif_dirwrite.c,v  <-- libtiff/tif_dirwrite.c
-new revision: 1.85; previous revision: 1.84
-
-2017-01-11 Even Rouault <even.rouault at spatialys.com>
-
-        * libtiff/tif_dirread.c: avoid division by floating point 0 in
-        TIFFReadDirEntryCheckedRational() and
-        TIFFReadDirEntryCheckedSrational(),
-        and return 0 in that case (instead of infinity as before presumably)
-        Apparently some sanitizers do not like those divisions by zero.
-        Fixes http://bugzilla.maptools.org/show_bug.cgi?id=2644
-
-/cvs/maptools/cvsroot/libtiff/ChangeLog,v  <-- ChangeLog
-new revision: 1.1203; previous revision: 1.1202
-/cvs/maptools/cvsroot/libtiff/libtiff/tif_dirread.c,v  <-- libtiff/tif_dirread.c
-new revision: 1.206; previous revision: 1.205
-
-2017-01-11 Even Rouault <even.rouault at spatialys.com>
-
-        * libtiff/tif_jpeg.c: validate BitsPerSample in JPEGSetupEncode() to
-        avoid undefined behaviour caused by invalid shift exponent.
-        Fixes http://bugzilla.maptools.org/show_bug.cgi?id=2648
-
-
-/cvs/maptools/cvsroot/libtiff/ChangeLog,v  <-- ChangeLog
-new revision: 1.1205; previous revision: 1.1204
-/cvs/maptools/cvsroot/libtiff/libtiff/tif_jpeg.c,v  <-- libtiff/tif_jpeg.c
-new revision: 1.126; previous revision: 1.125
-
-2017-01-11 Even Rouault <even.rouault at spatialys.com>
-
-        * libtiff/tif_read.c: avoid potential undefined behaviour on signed
-        integer addition in TIFFReadRawStrip1() in isMapped() case.
-        Fixes http://bugzilla.maptools.org/show_bug.cgi?id=2650
-
-/cvs/maptools/cvsroot/libtiff/ChangeLog,v  <-- ChangeLog
-new revision: 1.1206; previous revision: 1.1205
-/cvs/maptools/cvsroot/libtiff/libtiff/tif_read.c,v  <-- libtiff/tif_read.c
-new revision: 1.51; previous revision: 1.50
-
-Index: libtiff/libtiff/tif_dir.c
-===================================================================
-RCS file: /cvs/maptools/cvsroot/libtiff/libtiff/tif_dir.c,v
-retrieving revision 1.128
-retrieving revision 1.129
-diff -u -r1.128 -r1.129
---- libtiff/libtiff/tif_dir.c	3 Dec 2016 15:30:31 -0000	1.128
-+++ libtiff/libtiff/tif_dir.c	11 Jan 2017 16:09:02 -0000	1.129
-@@ -1,4 +1,4 @@
--/* $Id: tif_dir.c,v 1.128 2016-12-03 15:30:31 erouault Exp $ */
-+/* $Id: tif_dir.c,v 1.129 2017-01-11 16:09:02 erouault Exp $ */
- 
- /*
-  * Copyright (c) 1988-1997 Sam Leffler
-@@ -31,6 +31,7 @@
-  * (and also some miscellaneous stuff)
-  */
- #include "tiffiop.h"
-+#include <float.h>
- 
- /*
-  * These are used in the backwards compatibility code...
-@@ -154,6 +155,15 @@
- 	return (0);
- }
- 
-+static float TIFFClampDoubleToFloat( double val )
-+{
-+    if( val > FLT_MAX )
-+        return FLT_MAX;
-+    if( val < -FLT_MAX )
-+        return -FLT_MAX;
-+    return (float)val;
-+}
-+
- static int
- _TIFFVSetField(TIFF* tif, uint32 tag, va_list ap)
- {
-@@ -312,13 +322,13 @@
-         dblval = va_arg(ap, double);
-         if( dblval < 0 )
-             goto badvaluedouble;
--		td->td_xresolution = (float) dblval;
-+		td->td_xresolution = TIFFClampDoubleToFloat( dblval );
- 		break;
- 	case TIFFTAG_YRESOLUTION:
-         dblval = va_arg(ap, double);
-         if( dblval < 0 )
-             goto badvaluedouble;
--		td->td_yresolution = (float) dblval;
-+		td->td_yresolution = TIFFClampDoubleToFloat( dblval );
- 		break;
- 	case TIFFTAG_PLANARCONFIG:
- 		v = (uint16) va_arg(ap, uint16_vap);
-@@ -327,10 +337,10 @@
- 		td->td_planarconfig = (uint16) v;
- 		break;
- 	case TIFFTAG_XPOSITION:
--		td->td_xposition = (float) va_arg(ap, double);
-+		td->td_xposition = TIFFClampDoubleToFloat( va_arg(ap, double) );
- 		break;
- 	case TIFFTAG_YPOSITION:
--		td->td_yposition = (float) va_arg(ap, double);
-+		td->td_yposition = TIFFClampDoubleToFloat( va_arg(ap, double) );
- 		break;
- 	case TIFFTAG_RESOLUTIONUNIT:
- 		v = (uint16) va_arg(ap, uint16_vap);
-Index: libtiff/libtiff/tif_dirread.c
-===================================================================
-RCS file: /cvs/maptools/cvsroot/libtiff/libtiff/tif_dirread.c,v
-retrieving revision 1.206
-retrieving revision 1.207
-diff -u -r1.206 -r1.207
---- libtiff/libtiff/tif_dirread.c	11 Jan 2017 13:28:01 -0000	1.206
-+++ libtiff/libtiff/tif_dirread.c	11 Jan 2017 16:09:02 -0000	1.207
-@@ -1,4 +1,4 @@
--/* $Id: tif_dirread.c,v 1.205 2016-12-03 11:02:15 erouault Exp $ */
-+/* $Id: tif_dirread.c,v 1.207 2017-01-11 16:09:02 erouault Exp $ */
- 
- /*
-  * Copyright (c) 1988-1997 Sam Leffler
-@@ -40,6 +40,7 @@
-  */
- 
- #include "tiffiop.h"
-+#include <float.h>
- 
- #define IGNORE 0          /* tag placeholder used below */
- #define FAILED_FII    ((uint32) -1)
-@@ -2406,7 +2407,14 @@
- 				ma=(double*)origdata;
- 				mb=data;
- 				for (n=0; n<count; n++)
--					*mb++=(float)(*ma++);
-+                                {
-+                                    double val = *ma++;
-+                                    if( val > FLT_MAX )
-+                                        val = FLT_MAX;
-+                                    else if( val < -FLT_MAX )
-+                                        val = -FLT_MAX;
-+                                    *mb++=(float)val;
-+                                }
- 			}
- 			break;
- 	}
-Index: libtiff/libtiff/tif_dirwrite.c
-===================================================================
-RCS file: /cvs/maptools/cvsroot/libtiff/libtiff/tif_dirwrite.c,v
-retrieving revision 1.84
-retrieving revision 1.85
-diff -u -r1.84 -r1.85
---- libtiff/libtiff/tif_dirwrite.c	11 Jan 2017 12:51:59 -0000	1.84
-+++ libtiff/libtiff/tif_dirwrite.c	11 Jan 2017 16:09:02 -0000	1.85
-@@ -1,4 +1,4 @@
--/* $Id: tif_dirwrite.c,v 1.83 2016-10-25 21:35:15 erouault Exp $ */
-+/* $Id: tif_dirwrite.c,v 1.85 2017-01-11 16:09:02 erouault Exp $ */
- 
- /*
-  * Copyright (c) 1988-1997 Sam Leffler
-@@ -30,6 +30,7 @@
-  * Directory Write Support Routines.
-  */
- #include "tiffiop.h"
-+#include <float.h>
- 
- #ifdef HAVE_IEEEFP
- #define TIFFCvtNativeToIEEEFloat(tif, n, fp)
-@@ -939,6 +940,69 @@
- 	return(0);
- }
- 
-+static float TIFFClampDoubleToFloat( double val )
-+{
-+    if( val > FLT_MAX )
-+        return FLT_MAX;
-+    if( val < -FLT_MAX )
-+        return -FLT_MAX;
-+    return (float)val;
-+}
-+
-+static int8 TIFFClampDoubleToInt8( double val )
-+{
-+    if( val > 127 )
-+        return 127;
-+    if( val < -128 || val != val )
-+        return -128;
-+    return (int8)val;
-+}
-+
-+static int16 TIFFClampDoubleToInt16( double val )
-+{
-+    if( val > 32767 )
-+        return 32767;
-+    if( val < -32768 || val != val )
-+        return -32768;
-+    return (int16)val;
-+}
-+
-+static int32 TIFFClampDoubleToInt32( double val )
-+{
-+    if( val > 0x7FFFFFFF )
-+        return 0x7FFFFFFF;
-+    if( val < -0x7FFFFFFF-1 || val != val )
-+        return -0x7FFFFFFF-1;
-+    return (int32)val;
-+}
-+
-+static uint8 TIFFClampDoubleToUInt8( double val )
-+{
-+    if( val < 0 )
-+        return 0;
-+    if( val > 255 || val != val )
-+        return 255;
-+    return (uint8)val;
-+}
-+
-+static uint16 TIFFClampDoubleToUInt16( double val )
-+{
-+    if( val < 0 )
-+        return 0;
-+    if( val > 65535 || val != val )
-+        return 65535;
-+    return (uint16)val;
-+}
-+
-+static uint32 TIFFClampDoubleToUInt32( double val )
-+{
-+    if( val < 0 )
-+        return 0;
-+    if( val > 0xFFFFFFFFU || val != val )
-+        return 0xFFFFFFFFU;
-+    return (uint32)val;
-+}
-+
- static int
- TIFFWriteDirectoryTagSampleformatArray(TIFF* tif, uint32* ndir, TIFFDirEntry* dir, uint16 tag, uint32 count, double* value)
- {
-@@ -959,7 +1023,7 @@
- 			if (tif->tif_dir.td_bitspersample<=32)
- 			{
- 				for (i = 0; i < count; ++i)
--					((float*)conv)[i] = (float)value[i];
-+					((float*)conv)[i] = TIFFClampDoubleToFloat(value[i]);
- 				ok = TIFFWriteDirectoryTagFloatArray(tif,ndir,dir,tag,count,(float*)conv);
- 			}
- 			else
-@@ -971,19 +1035,19 @@
- 			if (tif->tif_dir.td_bitspersample<=8)
- 			{
- 				for (i = 0; i < count; ++i)
--					((int8*)conv)[i] = (int8)value[i];
-+					((int8*)conv)[i] = TIFFClampDoubleToInt8(value[i]);
- 				ok = TIFFWriteDirectoryTagSbyteArray(tif,ndir,dir,tag,count,(int8*)conv);
- 			}
- 			else if (tif->tif_dir.td_bitspersample<=16)
- 			{
- 				for (i = 0; i < count; ++i)
--					((int16*)conv)[i] = (int16)value[i];
-+					((int16*)conv)[i] = TIFFClampDoubleToInt16(value[i]);
- 				ok = TIFFWriteDirectoryTagSshortArray(tif,ndir,dir,tag,count,(int16*)conv);
- 			}
- 			else
- 			{
- 				for (i = 0; i < count; ++i)
--					((int32*)conv)[i] = (int32)value[i];
-+					((int32*)conv)[i] = TIFFClampDoubleToInt32(value[i]);
- 				ok = TIFFWriteDirectoryTagSlongArray(tif,ndir,dir,tag,count,(int32*)conv);
- 			}
- 			break;
-@@ -991,19 +1055,19 @@
- 			if (tif->tif_dir.td_bitspersample<=8)
- 			{
- 				for (i = 0; i < count; ++i)
--					((uint8*)conv)[i] = (uint8)value[i];
-+					((uint8*)conv)[i] = TIFFClampDoubleToUInt8(value[i]);
- 				ok = TIFFWriteDirectoryTagByteArray(tif,ndir,dir,tag,count,(uint8*)conv);
- 			}
- 			else if (tif->tif_dir.td_bitspersample<=16)
- 			{
- 				for (i = 0; i < count; ++i)
--					((uint16*)conv)[i] = (uint16)value[i];
-+					((uint16*)conv)[i] = TIFFClampDoubleToUInt16(value[i]);
- 				ok = TIFFWriteDirectoryTagShortArray(tif,ndir,dir,tag,count,(uint16*)conv);
- 			}
- 			else
- 			{
- 				for (i = 0; i < count; ++i)
--					((uint32*)conv)[i] = (uint32)value[i];
-+					((uint32*)conv)[i] = TIFFClampDoubleToUInt32(value[i]);
- 				ok = TIFFWriteDirectoryTagLongArray(tif,ndir,dir,tag,count,(uint32*)conv);
- 			}
- 			break;
-@@ -2102,7 +2102,7 @@
- 		m[0]=0;
- 		m[1]=1;
- 	}
--	else if (value==(double)(uint32)value)
-+	else if (value <= 0xFFFFFFFFU && value==(double)(uint32)value)
- 	{
- 		m[0]=(uint32)value;
- 		m[1]=1;
-@@ -2148,12 +2217,13 @@
- 	}
- 	for (na=value, nb=m, nc=0; nc<count; na++, nb+=2, nc++)
- 	{
--		if (*na<=0.0)
-+		if (*na<=0.0 || *na != *na)
- 		{
- 			nb[0]=0;
- 			nb[1]=1;
- 		}
--		else if (*na==(float)(uint32)(*na))
-+		else if (*na >= 0 && *na <= (float)0xFFFFFFFFU &&
-+                         *na==(float)(uint32)(*na))
- 		{
- 			nb[0]=(uint32)(*na);
- 			nb[1]=1;
-Index: libtiff/libtiff/tif_dirread.c
-===================================================================
-RCS file: /cvs/maptools/cvsroot/libtiff/libtiff/tif_dirread.c,v
-retrieving revision 1.205
-retrieving revision 1.206
-diff -u -r1.205 -r1.206
---- libtiff/libtiff/tif_dirread.c	3 Dec 2016 11:02:15 -0000	1.205
-+++ libtiff/libtiff/tif_dirread.c	11 Jan 2017 13:28:01 -0000	1.206
-@@ -2872,7 +2872,10 @@
- 		m.l = direntry->tdir_offset.toff_long8;
- 	if (tif->tif_flags&TIFF_SWAB)
- 		TIFFSwabArrayOfLong(m.i,2);
--	if (m.i[0]==0)
-+        /* Not completely sure what we should do when m.i[1]==0, but some */
-+        /* sanitizers do not like division by 0.0: */
-+        /* http://bugzilla.maptools.org/show_bug.cgi?id=2644 */
-+	if (m.i[0]==0 || m.i[1]==0)
- 		*value=0.0;
- 	else
- 		*value=(double)m.i[0]/(double)m.i[1];
-@@ -2900,7 +2903,10 @@
- 		m.l=direntry->tdir_offset.toff_long8;
- 	if (tif->tif_flags&TIFF_SWAB)
- 		TIFFSwabArrayOfLong(m.i,2);
--	if ((int32)m.i[0]==0)
-+        /* Not completely sure what we should do when m.i[1]==0, but some */
-+        /* sanitizers do not like division by 0.0: */
-+        /* http://bugzilla.maptools.org/show_bug.cgi?id=2644 */
-+	if ((int32)m.i[0]==0 || m.i[1]==0)
- 		*value=0.0;
- 	else
- 		*value=(double)((int32)m.i[0])/(double)m.i[1];
-Index: libtiff/libtiff/tif_jpeg.c
-===================================================================
-RCS file: /cvs/maptools/cvsroot/libtiff/libtiff/tif_jpeg.c,v
-retrieving revision 1.125
-retrieving revision 1.126
-diff -u -r1.125 -r1.126
---- libtiff/libtiff/tif_jpeg.c	11 Jan 2017 12:15:01 -0000	1.125
-+++ libtiff/libtiff/tif_jpeg.c	11 Jan 2017 16:13:50 -0000	1.126
-@@ -1,4 +1,4 @@
--/* $Id: tif_jpeg.c,v 1.123 2016-01-23 21:20:34 erouault Exp $ */
-+/* $Id: tif_jpeg.c,v 1.126 2017-01-11 16:13:50 erouault Exp $ */
- 
- /*
-  * Copyright (c) 1994-1997 Sam Leffler
-@@ -1632,6 +1632,13 @@
-                             "Invalig horizontal/vertical sampling value");
-                     return (0);
-                 }
-+                if( td->td_bitspersample > 16 )
-+                {
-+                    TIFFErrorExt(tif->tif_clientdata, module,
-+                                 "BitsPerSample %d not allowed for JPEG",
-+                                 td->td_bitspersample);
-+                    return (0);
-+                }
- 
- 		/*
- 		 * A ReferenceBlackWhite field *must* be present since the
-Index: libtiff/libtiff/tif_read.c
-===================================================================
-RCS file: /cvs/maptools/cvsroot/libtiff/libtiff/tif_read.c,v
-retrieving revision 1.50
-retrieving revision 1.51
-diff -u -r1.50 -r1.51
---- libtiff/libtiff/tif_read.c	2 Dec 2016 21:56:56 -0000	1.50
-+++ libtiff/libtiff/tif_read.c	11 Jan 2017 16:33:34 -0000	1.51
-@@ -420,16 +420,25 @@
- 			return ((tmsize_t)(-1));
- 		}
- 	} else {
--		tmsize_t ma,mb;
-+		tmsize_t ma;
- 		tmsize_t n;
--		ma=(tmsize_t)td->td_stripoffset[strip];
--		mb=ma+size;
--		if ((td->td_stripoffset[strip] > (uint64)TIFF_TMSIZE_T_MAX)||(ma>tif->tif_size))
--			n=0;
--		else if ((mb<ma)||(mb<size)||(mb>tif->tif_size))
--			n=tif->tif_size-ma;
--		else
--			n=size;
-+		if ((td->td_stripoffset[strip] > (uint64)TIFF_TMSIZE_T_MAX)||
-+                    ((ma=(tmsize_t)td->td_stripoffset[strip])>tif->tif_size))
-+                {
-+                    n=0;
-+                }
-+                else if( ma > TIFF_TMSIZE_T_MAX - size )
-+                {
-+                    n=0;
-+                }
-+                else
-+                {
-+                    tmsize_t mb=ma+size;
-+                    if (mb>tif->tif_size)
-+                            n=tif->tif_size-ma;
-+                    else
-+                            n=size;
-+                }
- 		if (n!=size) {
- #if defined(__WIN32__) && (defined(_MSC_VER) || defined(__MINGW32__))
- 			TIFFErrorExt(tif->tif_clientdata, module,