CVE-2018-5148: firefox: Use-after-free in compositor potentially allows code execution

Severity: Critical

CVSS Score: 9.8

A use-after-free vulnerability can occur in the compositor during certain graphics operations when a raw pointer is used instead of a reference counted one. This results in a potentially exploitable crash. This vulnerability affects Firefox ESR < 52.7.3 and Firefox < 59.0.2.