Use-after-free vulnerability in Google Chrome before 16.0.912.63 allows remote attackers to cause a denial of service or possibly have unspecified other impact via vectors related to bidirectional text (aka bidi) handling.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14494
https://bugs.webkit.org/show_bug.cgi?id=66015
http://googlechromereleases.blogspot.com/2011/12/stable-channel-update.html