The Expo plugin in Compiz Fusion 0.7.8 allows local users with physical access to drag the screen saver aside and access the locked desktop by using Expo mouse shortcuts, a related issue to CVE-2007-3920.
bugzilla.gnome.org/show_bug.cgi?id=561567
gitweb.compiz-fusion.org/?p=fusion/plugins/expo%3Ba=commit%3Bh=f97a9fa6f0ad578f674d1f248bd7bef90e3260e0
secunia.com/advisories/33077
secunia.com/advisories/34465
www.securityfocus.com/bid/32712
bugs.launchpad.net/ubuntu/+source/compiz-fusion-plugins-main/+bug/247088
exchange.xforce.ibmcloud.com/vulnerabilities/47172
www.redhat.com/archives/fedora-package-announce/2009-March/msg00860.html
www.redhat.com/archives/fedora-package-announce/2009-March/msg00878.html