Integer overflow in the alac_decode_close function in libavcodec/alac.c in FFmpeg before 1.1 allows remote attackers to have an unspecified impact via a large number of samples per frame in Apple Lossless Audio Codec (ALAC) data, which triggers an out-of-bounds array access.
http://www.ffmpeg.org/security.html
http://git.videolan.org/?p=ffmpeg.git%3Ba=commitdiff%3Bh=3920d1387834e2bc334aff9f518f4beb24e470bd