The VEGAOpBitmap::AddLine function in Opera before 10.61 does not properly initialize memory during processing of the SIZE attribute of a SELECT element, which allows remote attackers to trigger an invalid memory write operation, and consequently cause a denial of service (application crash) or possibly execute arbitrary code, via a large integer attribute value.
securityreason.com/securityalert/8244
www.kb.cert.org/vuls/id/778396
www.opera.com/docs/changelogs/mac/1061/
www.opera.com/docs/changelogs/unix/1061/
www.opera.com/docs/changelogs/windows/1061/
www.securityfocus.com/archive/1/517914/100/0/threaded
www.securityfocus.com/bid/47764
www.toucan-system.com/advisories/tssa-2011-02.txt
exchange.xforce.ibmcloud.com/vulnerabilities/67338