FFmpeg 0.5 allows remote attackers to cause a denial of service (hang) via a crafted file that triggers an infinite loop.
https://roundup.ffmpeg.org/roundup/ffmpeg/issue1240
http://www.vupen.com/english/advisories/2011/1241
http://www.securityfocus.com/bid/36465
http://www.mandriva.com/security/advisories?name=MDVSA-2011:114
http://www.mandriva.com/security/advisories?name=MDVSA-2011:112
http://www.mandriva.com/security/advisories?name=MDVSA-2011:089
http://www.mandriva.com/security/advisories?name=MDVSA-2011:088
http://www.mandriva.com/security/advisories?name=MDVSA-2011:062
http://www.mandriva.com/security/advisories?name=MDVSA-2011:061
http://www.debian.org/security/2010/dsa-2000