Multiple integer overflows in the (1) old_codec37 and (2) old_codec47 functions in libavcodec/sanm.c in FFmpeg before 1.1.3 allow remote attackers to have an unspecified impact via crafted LucasArts Smush data, which triggers an out-of-bounds array access.
http://git.videolan.org/?p=ffmpeg.git;a=commitdiff;h=5260edee7e5bd975837696c8c8c1a80eb2fbd7c1