The PDF functionality in Google Chrome before 19.0.1084.52 does not properly perform a cast of an unspecified variable during handling of color spaces, which allows remote attackers to cause a denial of service or possibly have unknown other impact via a crafted document.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A15566
http://www.securitytracker.com/id?1027098
http://www.securityfocus.com/bid/53679
http://secunia.com/advisories/49277
http://googlechromereleases.blogspot.com/2012/05/stable-channel-update_23.html