Security updates for Tuesday

Security updates have been issued by Arch Linux (systemd and thunderbird), Debian (clamav, libgd2, php7.3, spamassassin, and webkit2gtk), Fedora (kernel, kernel-headers, and sway), Mageia (firefox, kernel-linus, mutt, python-pillow, sphinx, thunderbird, and webkit2), openSUSE (firefox, nextcloud, and thunderbird), Oracle (firefox and ksh), Red Hat (curl, java-1.7.0-openjdk, kernel, and ruby), Scientific Linux (firefox and ksh), SUSE (sudo and xen), and Ubuntu (clamav, php5, php7.0, php7.2, php7.3, postgresql-10, postgresql-11, and webkit2gtk).