Security updates for Monday

Security updates have been issued by Arch Linux (atftp, coturn, gitlab, mdbook, mediawiki, nodejs, nodejs-lts-dubnium, nodejs-lts-erbium, nodejs-lts-fermium, nvidia-utils, opensmtpd, php, python-cairosvg, python-pillow, thunderbird, vivaldi, and wavpack), CentOS (firefox and thunderbird), Debian (chromium and snapd), Fedora (chromium, flatpak, glibc, kernel, kernel-headers, nodejs, php, and python-cairosvg), Mageia (bind, caribou, chromium-browser-stable, dom4j, edk2, opensc, p11-kit, policycoreutils, python-lxml, resteasy, sudo, synergy, and unzip), openSUSE (ceph, crmsh, dovecot23, hawk2, kernel, nodejs10, open-iscsi, openldap2, php7, python-jupyter_notebook, slurm_18_08, tcmu-runner, thunderbird, tomcat, viewvc, and vlc), Oracle (dotnet3.1 and thunderbird), Red Hat (postgresql:10, postgresql:12, postgresql:9.6, and xstream), SUSE (ImageMagick, openldap2, slurm, and tcmu-runner), and Ubuntu (icoutils).