Opera Software has released Opera 9.21. This version fixes a buffer overflow vulnerability that can be exploited with malicious torrent files and lead to arbitrary code execution. According to Opera’s advisory available at http://www.opera.com/support/search/view/860/, the vulnerability can be exploited only when the user right-clicks on the malicious torrent entry in the transfer manager – just clicking on the torrent link is ok.

New version can be downloaded from http://www.opera.com/download/.

Thanks to Juha-Matti.