CVE-2011-3952

Severity: medium (CVSS 6.8 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2012-08-20 · updated 2026-06-16
Weakness: CWE-20

Description

The decode_init function in kmvc.c in libavcodec in FFmpeg before 0.10 and in Libav 0.5.x before 0.5.9, 0.6.x before 0.6.6, 0.7.x before 0.7.6, and 0.8.x before 0.8.1 allows remote attackers to cause a denial of service (application crash) and possibly execute arbitrary code via a large palette size in a KMVC encoded file.

Affected products

FFmpeg: through 0.9.1; 0.3, 0.3.1, 0.3.2, 0.3.3, 0.3.4, 0.4.0 (+37)
libav: 0.5, 0.5.1, 0.5.2, 0.5.3, 0.6, 0.6.1 (+12)

References

http://ffmpeg.org/
http://git.libav.org/?p=libav.git%3Ba=commit%3Bh=386741f887714d3e46c9e8fe577e326a7964037b
http://libav.org/
http://www.debian.org/security/2012/dsa-2494
http://www.ubuntu.com/usn/USN-1479-1
http://ffmpeg.org/
http://git.libav.org/?p=libav.git%3Ba=commit%3Bh=386741f887714d3e46c9e8fe577e326a7964037b
http://libav.org/
http://www.debian.org/security/2012/dsa-2494
http://www.ubuntu.com/usn/USN-1479-1

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