The mpegts_write_pmt function in the MPEG2 transport stream (aka DVB) muxer (libavformat/mpegtsenc.c) in FFmpeg, possibly 2.1 and earlier, allows remote attackers to have unspecified impact and vectors, which trigger an out-of-bounds write.
http://git.videolan.org/?p=ffmpeg.git;a=commit;h=842b6c14bc
http://secunia.com/advisories/56971
http://www.securityfocus.com/bid/65560
http://www.securitytracker.com/id/1029850