CVE-2021-38504
When interacting with an HTML input element’s file picker dialog with webkitdirectory set, a use-after-free could have resulted, leading to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3. Date published : 2021-12-08 https://bugzilla.mozilla.org/show_bug.cgi?id=1730156