CVE-2015-6821

Name	CVE-2015-6821
Description	The ff_mpv_common_init function in libavcodec/mpegvideo.c in FFmpeg before 2.7.2 does not properly maintain the encoding context, which allows remote attackers to cause a denial of service (invalid pointer access) or possibly have unspecified other impact via crafted MPEG data.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub advisories/code/issues, web search, more)
References	DLA-1611-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
ffmpeg (PTS)	buster	7:4.1.9-0+deb10u1	fixed
	buster (security)	7:4.1.10-0+deb10u1	fixed
	bullseye (security), bullseye	7:4.3.5-0+deb11u1	fixed
	sid, bookworm	7:5.1.2-3	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin
ffmpeg	source	squeeze	(unfixed)	end-of-life
ffmpeg	source	(unstable)	7:2.7.2-1
libav	source	jessie	6:11.12-1~deb8u2		DLA-1611-1
libav	source	(unstable)	(unfixed)

Notes

[squeeze] - ffmpeg <end-of-life> (Not supported in Squeeze LTS)
https://git.videolan.org/?p=ffmpeg.git;a=commitdiff;h=b160fc290cf49b516c5b6ee0730fd9da7fc623b1