diff options
Diffstat (limited to 'gnu/packages/patches/qemu-CVE-2018-11806.patch')
| -rw-r--r-- | gnu/packages/patches/qemu-CVE-2018-11806.patch | 105 |
1 files changed, 0 insertions, 105 deletions
diff --git a/gnu/packages/patches/qemu-CVE-2018-11806.patch b/gnu/packages/patches/qemu-CVE-2018-11806.patch deleted file mode 100644 index f021dfa747..0000000000 --- a/gnu/packages/patches/qemu-CVE-2018-11806.patch +++ /dev/null @@ -1,105 +0,0 @@ -Fix CVE-2018-11806: - -https://lists.gnu.org/archive/html/qemu-devel/2018-06/msg01012.html -https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-11806 - -Patch copied from upstream source repository: - -https://git.qemu.org/?p=qemu.git;a=commitdiff;h=864036e251f54c99d31df124aad7f34f01f5344c - -From 864036e251f54c99d31df124aad7f34f01f5344c Mon Sep 17 00:00:00 2001 -From: Prasad J Pandit <pjp@fedoraproject.org> -Date: Tue, 5 Jun 2018 23:38:35 +0530 -Subject: [PATCH] slirp: correct size computation while concatenating mbuf - -While reassembling incoming fragmented datagrams, 'm_cat' routine -extends the 'mbuf' buffer, if it has insufficient room. It computes -a wrong buffer size, which leads to overwriting adjacent heap buffer -area. Correct this size computation in m_cat. - -Reported-by: ZDI Disclosures <zdi-disclosures@trendmicro.com> -Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org> -Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org> ---- - slirp/mbuf.c | 11 +++++------ - slirp/mbuf.h | 8 +++----- - 2 files changed, 8 insertions(+), 11 deletions(-) - -diff --git a/slirp/mbuf.c b/slirp/mbuf.c -index 5ff24559fd..18cbf759a7 100644 ---- a/slirp/mbuf.c -+++ b/slirp/mbuf.c -@@ -138,7 +138,7 @@ m_cat(struct mbuf *m, struct mbuf *n) - * If there's no room, realloc - */ - if (M_FREEROOM(m) < n->m_len) -- m_inc(m,m->m_size+MINCSIZE); -+ m_inc(m, m->m_len + n->m_len); - - memcpy(m->m_data+m->m_len, n->m_data, n->m_len); - m->m_len += n->m_len; -@@ -147,7 +147,7 @@ m_cat(struct mbuf *m, struct mbuf *n) - } - - --/* make m size bytes large */ -+/* make m 'size' bytes large from m_data */ - void - m_inc(struct mbuf *m, int size) - { -@@ -158,12 +158,12 @@ m_inc(struct mbuf *m, int size) - - if (m->m_flags & M_EXT) { - datasize = m->m_data - m->m_ext; -- m->m_ext = g_realloc(m->m_ext, size); -+ m->m_ext = g_realloc(m->m_ext, size + datasize); - m->m_data = m->m_ext + datasize; - } else { - char *dat; - datasize = m->m_data - m->m_dat; -- dat = g_malloc(size); -+ dat = g_malloc(size + datasize); - memcpy(dat, m->m_dat, m->m_size); - - m->m_ext = dat; -@@ -171,8 +171,7 @@ m_inc(struct mbuf *m, int size) - m->m_flags |= M_EXT; - } - -- m->m_size = size; -- -+ m->m_size = size + datasize; - } - - -diff --git a/slirp/mbuf.h b/slirp/mbuf.h -index 893601ff9d..33b84485d6 100644 ---- a/slirp/mbuf.h -+++ b/slirp/mbuf.h -@@ -33,8 +33,6 @@ - #ifndef MBUF_H - #define MBUF_H - --#define MINCSIZE 4096 /* Amount to increase mbuf if too small */ -- - /* - * Macros for type conversion - * mtod(m,t) - convert mbuf pointer to data pointer of correct type -@@ -72,11 +70,11 @@ struct mbuf { - struct mbuf *m_prevpkt; /* Flags aren't used in the output queue */ - int m_flags; /* Misc flags */ - -- int m_size; /* Size of data */ -+ int m_size; /* Size of mbuf, from m_dat or m_ext */ - struct socket *m_so; - -- caddr_t m_data; /* Location of data */ -- int m_len; /* Amount of data in this mbuf */ -+ caddr_t m_data; /* Current location of data */ -+ int m_len; /* Amount of data in this mbuf, from m_data */ - - Slirp *slirp; - bool resolution_requested; --- -2.17.1 - |