The International Components for Unicode (ICU) functionality in Google Chrome before 22.0.1229.92 allows remote attackers to cause a denial of service (out-of-bounds read) via vectors related to a regular expression.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A15774
https://code.google.com/p/chromium/issues/detail?id=148692
http://googlechromereleases.blogspot.com/2012/10/stable-channel-update.html