Provide references for CVE-2021-23961.
Where can I find more information about CVE-2021-23961?
References are available at: https://www.mozilla.org/security/advisories/mfsa2021-03/, https://bugzilla.mozilla.org/show_bug.cgi?id=1677940, https://www.debian.org/security/2021/dsa-4895, https://lists.debian.org/debian-lts-announce/2021/04/msg00019.html, https://www.debian.org/security/2021/dsa-4897, https://lists.debian.org/debian-lts-announce/2021/04/msg00020.html, https://security.gentoo.org/glsa/202104-10, https://security.gentoo.org/glsa/202104-09.