Provide references for CVE-2021-29947.
Where can I find more information about CVE-2021-29947?
References are available at: https://www.mozilla.org/security/advisories/mfsa2021-16/, https://bugzilla.mozilla.org/buglist.cgi?bug_id=1651449%2C1674142%2C1693476%2C1696886%2C1700091.