Provide references for CVE-2021-23979.
Where can I find more information about CVE-2021-23979?
References are available at: https://www.mozilla.org/security/advisories/mfsa2021-07/, https://bugzilla.mozilla.org/buglist.cgi?bug_id=1663222%2C1666607%2C1672120%2C1678463%2C1678927%2C1679560%2C1681297%2C1681684%2C1683490%2C1684377%2C1684902.