The regular-expression functionality in Google Chrome before 10.0.648.127 does not properly implement reentrancy, which allows remote attackers to cause a denial of service (memory corruption) or possibly have unspecified other impact via unknown vectors.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14571
https://exchange.xforce.ibmcloud.com/vulnerabilities/65969
http://www.vupen.com/english/advisories/2011/0628
http://www.securityfocus.com/bid/46785
http://googlechromereleases.blogspot.com/2011/03/chrome-stable-release.html