This update for MozillaFirefox fixes the following issues: Firefox Extended Support Release 91.2.0 ESR * Fixed: Various stability, functionality, and security fixes MFSA 2021-45 * CVE-2021-38496: Use-after-free in MessageTask * CVE-2021-38497: Validation message could have been overlaid on another origin * CVE-2021-38498: Use-after-free of nsLanguageAtomService object * CVE-2021-32810: Fixed Data race in crossbeam-deque * CVE-2021-38500: Memory safety bugs fixed in Firefox 93, Firefox ESR 78.15, and Firefox ESR 91.2 * CVE-2021-38501: Memory safety bugs fixed in Firefox 93 and Firefox ESR 91.2 - Fixed crash in FIPS mode