CVE-2011-3957
Use-after-free vulnerability in the garbage-collection functionality in Google Chrome before 17.0.963.46 allows remote attackers to cause a denial of service or possibly have unspecified other impact via vectors involving PDF documents.
Date published : 2012-02-08
http://code.google.com/p/chromium/issues/detail?id=104056
http://googlechromereleases.blogspot.com/2012/02/stable-channel-update.html