diff options
Diffstat (limited to 'gnu/packages/patches/qemu-CVE-2019-6778.patch')
| -rw-r--r-- | gnu/packages/patches/qemu-CVE-2019-6778.patch | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/gnu/packages/patches/qemu-CVE-2019-6778.patch b/gnu/packages/patches/qemu-CVE-2019-6778.patch new file mode 100644 index 0000000000..315f2922da --- /dev/null +++ b/gnu/packages/patches/qemu-CVE-2019-6778.patch @@ -0,0 +1,43 @@ +Fixes CVE-2019-6778: + +https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-6778 + +Patch copied from upstream source repository: + +https://git.qemu.org/?p=qemu.git;a=commitdiff;h=a7104eda7dab99d0cdbd3595c211864cba415905 + +From a7104eda7dab99d0cdbd3595c211864cba415905 Mon Sep 17 00:00:00 2001 +From: Prasad J Pandit <pjp@fedoraproject.org> +Date: Sun, 13 Jan 2019 23:29:48 +0530 +Subject: [PATCH] slirp: check data length while emulating ident function + +While emulating identification protocol, tcp_emu() does not check +available space in the 'sc_rcv->sb_data' buffer. It could lead to +heap buffer overflow issue. Add check to avoid it. + +Reported-by: Kira <864786842@qq.com> +Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org> +Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org> +--- + slirp/tcp_subr.c | 5 +++++ + 1 file changed, 5 insertions(+) + +diff --git a/slirp/tcp_subr.c b/slirp/tcp_subr.c +index 4a9a5b5edc..23a841f26e 100644 +--- a/slirp/tcp_subr.c ++++ b/slirp/tcp_subr.c +@@ -634,6 +634,11 @@ tcp_emu(struct socket *so, struct mbuf *m) + socklen_t addrlen = sizeof(struct sockaddr_in); + struct sbuf *so_rcv = &so->so_rcv; + ++ if (m->m_len > so_rcv->sb_datalen ++ - (so_rcv->sb_wptr - so_rcv->sb_data)) { ++ return 1; ++ } ++ + memcpy(so_rcv->sb_wptr, m->m_data, m->m_len); + so_rcv->sb_wptr += m->m_len; + so_rcv->sb_rptr += m->m_len; +-- +2.20.1 + |