CVE-2011-3952: Ffmpeg

Medium severity, CVSS 6.8. EPSS: 3.1% chance of exploitation in the next 30 days.

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 Ffmpeg: up to and including 0.9.1; version 0.3 only; version 0.3.1 only; version 0.3.2 only; version 0.3.3 only; version 0.3.4 only; …
• Libav Libav: version 0.5 only; version 0.5.1 only; version 0.5.2 only; version 0.5.3 only; version 0.6 only; version 0.6.1 only; …

Published 2012-08-20. Last modified 2026-06-16.