Google Chrome before 6.0.472.59 does not properly implement Geolocation, 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%3A7620
http://googlechromereleases.blogspot.com/2010/09/stable-beta-channel-updates_14.html