CentOS has updated libvirt (denial of service).
Fedora has updated cxf (F17; multiple vulnerabilities), firefox (F16, F17, F18; information disclosure), and xulrunner (F16, F17, F18; information disclosure).
Mandriva has updated bacula (information disclosure) and graphicsmagick (denial of service).
openSUSE has updated kernel (multiple vulnerabilities).
Oracle has updated libvirt (denial of service).
Slackware has updated mozilla-firefox (information disclosure) and mozilla-thunderbird (information disclosure).
Ubuntu has updated firefox (information disclosure), kernel (10.04, 11.10; multiple vulnerabilities), kernel (12.04; privilege escalation), and kernel (11.10 OMAP4; denial of service).