Use-after-free in the Layout: Text and Fonts component. This vulnerability affects Firefox < 149, Firefox ESR < 115.34, Firefox ESR < 140.9, Thunderbird < 149, …

A use-after-free vulnerability has been identified in the Layout: Text and Fonts component of Mozilla Firefox and Thunderbird. This memory corruption vulnerability affects multiple versions of Firefox (versions prior to 149), Firefox ESR (versions prior to 115.34 and 140.9), and Thunderbird (versions prior to 149 and 140.9). Use-after-free vulnerabilities can potentially allow attackers to execute arbitrary code or cause application crashes by accessing previously freed memory. Mozilla has released security advisories and patches to address this vulnerability across all affected products.