CVE-2021-38498
During process shutdown, a document could have caused a use-after-free of a languages service object, leading to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 93, Thunderbird < 91.2, and Firefox ESR < 91.2. Date published : 2021-11-02 https://bugzilla.mozilla.org/show_bug.cgi?id=1729642