The host is installed with Google Chrome before 9.0.597.107, Apple Safari before 5.0.6 or Apple iTunes before 10.5 and is prone to denial of service vulnerability. A flaw is present in the applications, which is caused by a stale pointer error related to the handling of stylesheet nodes. Successful exploitation allow remote attackers to cause a denial of service or possibly have unspecified other impact via unknown vectors that lead to a "stale pointer."