Provide references for CVE-2021-3560.
Where can I find more information about CVE-2021-3560?
References are available at: https://bugzilla.redhat.com/show_bug.cgi?id=1961710, https://github.blog/2021-06-10-privilege-escalation-polkit-root-on-linux-with-bug/, http://packetstormsecurity.com/files/172836/polkit-Authentication-Bypass.html, http://packetstormsecurity.com/files/172846/Facebook-Fizz-Denial-Of-Service.html.