Certain WebGL operations on Apple silicon M series devices could have lead to an out-of-bounds write and memory corruption due to a flaw in Apple's GPU driver. *This bug only affected the application on Apple M series hardware. Other platforms were unaffected.* This vulnerability affects Firefox < 133, Firefox ESR < 128.5, Firefox ESR < 115.18, Thunderbird < 133, and Thunderbird < 128.5.
https://www.mozilla.org/security/advisories/mfsa2024-68/
https://www.mozilla.org/security/advisories/mfsa2024-67/
https://www.mozilla.org/security/advisories/mfsa2024-65/
https://www.mozilla.org/security/advisories/mfsa2024-64/
https://www.mozilla.org/security/advisories/mfsa2024-63/