Mozilla Firefox and Firefox ESR Use-After-Free Vulnerability in CSS Parsing Component

A use-after-free vulnerability has been identified in the CSS Parsing and Computation component of Mozilla Firefox. This issue affects Firefox versions prior to 149, as well as Firefox ESR versions prior to 115.34 and prior to 140.9. The vulnerability arises from improper memory management, which can potentially be exploited to cause memory corruption.

Impact

Exploitation of this vulnerability leads to a use-after-free condition, which can commonly be exploited to execute arbitrary code.

Remediation

Users can upgrade to Firefox 149, Firefox ESR 115.34, or Firefox ESR 140.9 to address this vulnerability.