Debian has updated kdelibs (buffer overflow).

Mandriva has updated kernel (multiple vulnerabilities), netpbm (buffer overflow), gnome-screensaver (multiple vulnerabilities) and pidgin (multiple vulnerabilities).

Red Hat Enterprise Linux has updated firefox (RHEL4 and 5) (multiple vulnerabilities), seamonkey (RHEL3 and 4) (multiple vulnerabilities), acroread (RHEL4 and 5) (multiple vulnerabilities) and pidgin (RHEL4 and 5) (multiple vulnerabilities).

Ubuntu has updated firefox (multiple vulnerabilities) and firefox (multiple vulnerabilities).

Read more at LWN