The nsTextFrame::ClearTextRun function in layout/generic/nsTextFrameThebes.cpp in Mozilla Firefox 3.0.9 allows remote attackers to cause a denial of service (memory corruption) and probably execute arbitrary code via unspecified vectors. NOTE: this vulnerability reportedly exists because of an incorrect fix for CVE-2009-1302.
https://rhn.redhat.com/errata/RHSA-2009-0449.html
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10446
https://bugzilla.redhat.com/show_bug.cgi?id=497447
https://bugzilla.mozilla.org/show_bug.cgi?id=490233
https://bugzilla.mozilla.org/show_bug.cgi?id=489676
https://bugzilla.mozilla.org/show_bug.cgi?id=489647
http://www.vupen.com/english/advisories/2009/1180
http://www.ubuntu.com/usn/USN-765-1
http://www.securityfocus.com/bid/34743
http://www.mozilla.org/security/announce/2009/mfsa2009-23.html
http://www.mandriva.com/security/advisories?name=MDVSA-2009:111
http://slackware.com/security/viewer.php?l=slackware-security&y=2009&m=slackware-security.350967
http://securitytracker.com/id?1022127
http://securitytracker.com/id?1022126
http://secunia.com/advisories/34919
http://secunia.com/advisories/34910