Google Chrome before 24.0.1312.52 does not properly handle image data in PDF documents, which allows remote attackers to cause a denial of service (out-of-bounds read) via a crafted document.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16424
https://code.google.com/p/chromium/issues/detail?id=162776
https://code.google.com/p/chromium/issues/detail?id=162156
http://googlechromereleases.blogspot.com/2013/01/stable-channel-update.html