The av_probe_input_buffer function in libavformat/utils.c in FFmpeg before 1.0.2, when running with certain -probesize values, allows remote attackers to cause a denial of service (crash) via a crafted MP3 file, possibly related to frame size or lack of sufficient "frames to estimate rate."
http://www.ffmpeg.org/security.html
http://secunia.com/advisories/51964
http://git.videolan.org/?p=ffmpeg.git%3Ba=commit%3Bh=e74cd2f4706f71da5e9205003c1d8263b54ed3fb
http://git.libav.org/?p=libav.git%3Ba=blob%3Bf=Changelog%3Bhb=refs/tags/v9.11