GNOME screensaver 2.20 in Ubuntu 7.10, when used with Compiz, does not properly reserve input focus, which allows attackers with physical access to take control of the session after entering an Alt-Tab sequence, a related issue to CVE-2007-3069.
https://www.redhat.com/archives/fedora-package-announce/2008-January/msg00841.html
https://www.redhat.com/archives/fedora-package-announce/2008-January/msg00811.html
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10192
https://exchange.xforce.ibmcloud.com/vulnerabilities/37410
https://bugzilla.redhat.com/show_bug.cgi?id=363061
https://bugzilla.redhat.com/show_bug.cgi?id=357071
http://www.ubuntu.com/usn/usn-537-2
http://www.ubuntu.com/usn/usn-537-1
http://www.securityfocus.com/bid/26188
http://www.redhat.com/support/errata/RHSA-2008-0485.html
http://secunia.com/advisories/30715
http://secunia.com/advisories/30329
http://secunia.com/advisories/28627
http://secunia.com/advisories/27381
http://lists.opensuse.org/opensuse-security-announce/2008-06/msg00002.html