In the <code>nsTArray_Impl::ReplaceElementsAt()</code> function, an integer overflow could have occurred when the number of elements to replace was too large for the container. This vulnerability affects Firefox < 102, Firefox ESR < 91.11, Thunderbird < 102, and Thunderbird < 91.11.
https://www.mozilla.org/security/advisories/mfsa2022-26/
https://www.mozilla.org/security/advisories/mfsa2022-25/