Google V8, as used in Google Chrome before 15.0.874.121, allows remote attackers to cause a denial of service or possibly have unspecified other impact via unknown vectors that trigger an out-of-bounds write operation.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14155
http://secunia.com/advisories/46933
http://googlechromereleases.blogspot.com/2011/11/stable-channel-update_16.html