libavcodec/jpeg2000.c in FFmpeg before 2.1 allows remote attackers to cause a denial of service (invalid pointer dereference) or possibly have unspecified other impact via crafted JPEG2000 data.
http://openwall.com/lists/oss-security/2013/11/26/7
http://openwall.com/lists/oss-security/2013/12/08/3
https://github.com/FFmpeg/FFmpeg/commit/912ce9dd2080c5837285a471d750fa311e09b555