Google Chrome before 9.0.597.94 does not properly perform event handling for animations, which allows remote attackers to cause a denial of service or possibly have unspecified other impact via unknown vectors that lead to a "stale pointer."
http://code.google.com/p/chromium/issues/detail?id=67234
http://googlechromereleases.blogspot.com/2011/02/stable-channel-update_08.html
http://lists.apple.com/archives/security-announce/2011//Jul/msg00002.html
http://lists.apple.com/archives/Security-announce/2011//Oct/msg00000.html
http://lists.apple.com/archives/Security-announce/2011//Oct/msg00001.html
http://secunia.com/advisories/43342
http://secunia.com/advisories/43368
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14320
http://support.apple.com/kb/HT4808
http://support.apple.com/kb/HT4981
http://support.apple.com/kb/HT4999