Array index error in the qdm2_decode_super_block function in libavcodec/qdm2.c in FFmpeg before 1.1 allows remote attackers to have an unspecified impact via crafted QDM2 data, which triggers an out-of-bounds array access.
http://www.ffmpeg.org/security.html
http://www.debian.org/security/2014/dsa-2855
http://git.videolan.org/?p=ffmpeg.git%3Ba=commitdiff%3Bh=a7ee6281f7ef1c29284e3a4cadfe0f227ffde1ed