Provide references for CVE-2011-2640.
Where can I find more information about CVE-2011-2640?
References are available at: http://www.opera.com/docs/changelogs/windows/1110/, http://www.opera.com/docs/changelogs/mac/1110/, https://exchange.xforce.ibmcloud.com/vulnerabilities/68452, http://www.opera.com/docs/changelogs/unix/1110/.