Use-after-free vulnerability in QuickTime in Apple Mac OS X 10.7.x before 10.7.4 allows remote attackers to execute arbitrary code or cause a denial of service (application crash) via a crafted movie file with JPEG2000 encoding.
http://www.securityfocus.com/bid/53466
http://www.securityfocus.com/bid/53445
http://support.apple.com/kb/HT5281
http://support.apple.com/kb/HT5261
http://lists.apple.com/archives/security-announce/2012/May/msg00005.html
http://lists.apple.com/archives/security-announce/2012/May/msg00001.html