CVE-2012-2844
The PDF functionality in Google Chrome before 20.0.1132.57 does not properly handle JavaScript code, which allows remote attackers to cause a denial of service (incorrect object access) or possibly have unspecified other impact via a crafted document.
Date published : 2012-07-12
http://code.google.com/p/chromium/issues/detail?id=133450
http://googlechromereleases.blogspot.com/2012/07/stable-channel-update.html