Provide references for CVE-2011-3153.
Where can I find more information about CVE-2011-3153?
References are available at: https://bugs.launchpad.net/ubuntu/%2Bsource/lightdm/%2Bbug/883865, http://www.ubuntu.com/usn/USN-1262-1, http://bazaar.launchpad.net/~lightdm-team/lightdm/trunk/revision/1299.