Provide references for CVE-2021-23974.
Where can I find more information about CVE-2021-23974?
References are available at: https://www.mozilla.org/security/advisories/mfsa2021-07/, https://bugzilla.mozilla.org/buglist.cgi?bug_id=1528997%2C1683627, https://security.gentoo.org/glsa/202104-10.