Google Chrome before 12.0.742.91 does not properly implement the framework for extensions, 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."
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14481
https://exchange.xforce.ibmcloud.com/vulnerabilities/67896
http://www.securityfocus.com/bid/48129
http://secunia.com/advisories/44829
http://googlechromereleases.blogspot.com/2011/06/chrome-stable-release.html