Use-after-free vulnerability in the attribute-cloning functionality in the DOM implementation in Mozilla Firefox 3.5.x before 3.5.11 and 3.6.x before 3.6.7, and SeaMonkey before 2.0.6, allows remote attackers to execute arbitrary code via vectors related to deletion of an event attribute node with a nonzero reference count.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11740
https://euvd.enisa.europa.eu/vulnerability/EUVD-2010-1238
https://bugzilla.mozilla.org/show_bug.cgi?id=572986
http://www.zerodayinitiative.com/advisories/ZDI-10-134/
http://www.securityfocus.com/bid/41849
http://www.securityfocus.com/archive/1/512515
http://www.mozilla.org/security/announce/2010/mfsa2010-35.html