Mozilla developers and community members identified and fixed several stability bugs in the browser engine used in Firefox and other Mozilla-based products. Some of these crashes showed evidence of memory corruption under certain circumstances and we presume that with enough effort at least some of these could be exploited to run arbitrary code. Carsten Book reported a crash in the JavaScript engine which affected only Firefox 3.5.
http://www.mozilla.org/security/announce/2009/mfsa2009-47.html
eclipse-3.4.2-15.fc11, epiphany-extensions-2.26.1-6.fc11, monodevelop-2.0-5.fc11, seahorse-plugins-2.26.2-5.fc11, epiphany-2.26.3-4.fc11, blam-1.8.5-14.fc11, chmsee-1.0.1-11.fc11, pcmanx-gtk2-0.3.8-8.fc11, gnome-web-photo-0.7-6.fc11, galeon-2.0.7-14.fc11, evolution-rss-0.1.4-3.fc11, gnome-python2-extras-2.25.3-7.fc11, hulahop-0.4.9-8.fc11, mozvoikko-0.9.7-0.7.rc1.fc11, google-gadgets-0.11.0-5.fc11, kazehakase-0.5.7-2.fc11, perl-Gtk2-MozEmbed-0.08-6.fc11.5, Miro-2.5.2-4.fc11, yelp-2.26.0-7.fc11, ruby-gnome2-0.19.1-2.fc11, firefox-3.5.3-1.fc11, xulrunner-1.9.1.3-1.fc11 has been pushed to the Fedora 11 stable repository. If problems still persist, please make note of it in this bug report.