Provide references for CVE-2011-4089.
Where can I find more information about CVE-2011-4089?
References are available at: http://seclists.org/fulldisclosure/2011/Oct/804, https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=632862, http://www.ubuntu.com/usn/USN-1308-1, http://www.exploit-db.com/exploits/18147, http://www.openwall.com/lists/oss-security/2011/10/28/16.