system
Describe <CVE-2012-2855>.
user
What is <CVE-2012-2855>?
assistant
Use-after-free vulnerability in the PDF functionality in Google Chrome before 21.0.1180.57 on Mac OS X and Linux, and before 21.0.1180.60 on Windows and Chrome Frame, allows remote attackers to cause a denial of service or possibly have unspecified other impact via a crafted document..