Off-by-one error in the adpcm_decode_frame function in libavcodec/adpcm.c in FFmpeg before 1.0.4 allows remote attackers to have an unspecified impact via crafted DK4 data, which triggers an out-of-bounds array access.
http://www.ffmpeg.org/security.html
http://www.debian.org/security/2013/dsa-2793
http://git.videolan.org/?p=ffmpeg.git%3Ba=commitdiff%3Bh=f18c873ab5ee3c78d00fdcc2582b39c133faecb4
http://git.videolan.org/?p=ffmpeg.git%3Ba=commitdiff%3Bh=85a14dbd5dca34320f58b1ba11dd6dd0df4fb3be