Google Chrome before 5.0.375.125 does not properly mitigate an unspecified flaw in the Windows kernel, which has unknown impact and attack vectors.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11890
http://secunia.com/advisories/40743
http://googlechromereleases.blogspot.com/2010/07/stable-channel-update_26.html