| Name | CVE-2016-9820 |
| Description | libavcodec/mpegvideo_motion.c in libav 11.8 allows remote attackers to cause a denial of service (crash) via vectors involving left shift of a negative value. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-791-1 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| libav (PTS) | jessie, jessie (lts) | 6:11.12-1~deb8u9 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| libav | source | wheezy | 6:0.8.20-0+deb7u1 | | DLA-791-1 | |
| libav | source | jessie | (not affected) | | | |
| libav | source | (unstable) | (unfixed) | unimportant | | |
Notes
[jessie] - libav <not-affected> (The fixing patches are included in the upstream version)
https://blogs.gentoo.org/ago/2016/12/01/libav-multiple-crashes-from-the-undefined-behavior-sanitizer
https://github.com/asarubbo/poc/blob/master/00036-libav-leftshift-mpegvideo
https://bugzilla.libav.org/show_bug.cgi?id=980
https://git.libav.org/?p=libav.git;a=commit;h=e17bcfbecc268ba00cb55025095d70b1025e6c7d (pre 11.9)
https://git.libav.org/?p=libav.git;a=commit;h=f106f74206e69e9056130da8bddffc39f3878ac3 (pre 11.9)