system
Describe <CVE-2012-2857>.
user
What is <CVE-2012-2857>?
assistant
Use-after-free vulnerability in the Cascading Style Sheets (CSS) DOM implementation 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..