Integer truncation error in opera.dll in Opera before 11.01 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via an HTML form with a select element that contains a large number of children.
osvdb.org/70728
secunia.com/advisories/43023
www.opera.com/docs/changelogs/mac/1101/
www.opera.com/docs/changelogs/unix/1101/
www.opera.com/docs/changelogs/windows/1101/
www.opera.com/support/kb/view/982/
www.securityfocus.com/bid/46036
www.vupen.com/english/advisories/2011/0231
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12636
www.alternativ-testing.fr/blog/index.php?post/2011/%5BCVE-XXXX-XXXX%5D-Opera-11-Integer-Truncation-Vulnerability