Use-after-free vulnerability in WebKit in Apple Safari before 5.0.3 on Mac OS X 10.5 through 10.6 and Windows, and before 4.1.3 on Mac OS X 10.4, allows remote attackers to execute arbitrary code or cause a denial of service (application crash) via vectors involving element attributes.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11538
http://www.vupen.com/english/advisories/2011/0212
http://www.vupen.com/english/advisories/2010/3046
http://support.apple.com/kb/HT4456
http://support.apple.com/kb/HT4455
http://secunia.com/advisories/43068
http://secunia.com/advisories/42314
http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00006.html
http://lists.apple.com/archives/security-announce/2010//Nov/msg00003.html
http://lists.apple.com/archives/security-announce/2010//Nov/msg00002.html