browser/worker_host/message_port_dispatcher.cc in Google Chrome before 8.0.552.224 and Chrome OS before 8.0.552.343 does not properly handle certain postMessage calls, which allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via crafted JavaScript code that creates a web worker.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14161
http://www.securityfocus.com/bid/45390
http://www.gentoo.org/security/en/glsa/glsa-201012-01.xml
http://src.chromium.org/viewvc/chrome?view=rev&revision=66620
http://secunia.com/advisories/42648
http://googlechromereleases.blogspot.com/2010/12/stable-beta-channel-updates_13.html