Opera 9 allows remote attackers to cause a denial of service (crash) via an A tag with an href attribute with a URL containing a long hostname, which triggers an out-of-bounds operation.
my.opera.com/community/forums/topic.dml?id=144635
securitytracker.com/id?1016359
www.critical.lt/?vuln/349
www.osvdb.org/27510
www.securityfocus.com/archive/1/437945/100/0/threaded
www.securityfocus.com/archive/1/438326/100/0/threaded
www.securityfocus.com/bid/18585
www.vupen.com/english/advisories/2006/2617
exchange.xforce.ibmcloud.com/vulnerabilities/27289