Google Chrome before 21.0.1180.57 on Mac OS X and Linux, and before 21.0.1180.60 on Windows and Chrome Frame, allows remote attackers to obtain potentially sensitive information about pointer values by leveraging access to a WebUI renderer process.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A15698
https://euvd.enisa.europa.eu/vulnerability/EUVD-2012-2834
http://googlechromereleases.blogspot.com/2012/07/stable-channel-release.html