Provide references for CVE-2011-2921.
Where can I find more information about CVE-2011-2921?
References are available at: http://packetstormsecurity.com/files/154307/ktsuss-Suid-Privilege-Escalation.html, https://security-tracker.debian.org/tracker/CVE-2011-2921, https://access.redhat.com/security/cve/cve-2011-2921.