Provide references for CVE-2021-23969.
Where can I find more information about CVE-2021-23969?
References are available at: https://www.mozilla.org/security/advisories/mfsa2021-07/, https://www.mozilla.org/security/advisories/mfsa2021-09/, https://www.mozilla.org/security/advisories/mfsa2021-08/, https://bugzilla.mozilla.org/show_bug.cgi?id=1542194, https://lists.debian.org/debian-lts-announce/2021/03/msg00000.html, https://www.debian.org/security/2021/dsa-4866, https://security.gentoo.org/glsa/202104-10, https://security.gentoo.org/glsa/202104-09.