The dirac_unpack_idwt_params function in libavcodec/diracdec.c in FFmpeg before 0.10 allows remote attackers to have an unspecified impact via crafted Dirac data.
http://www.ffmpeg.org/security.html
http://git.videolan.org/?p=ffmpeg.git%3Ba=commitdiff%3Bh=e2291ea1534d17306f685b8c8abc8585bbed87bf