Security updates for Tuesday

Security updates have been issued by Debian (dovecot and firefox-esr), Fedora (firefox and grafana), Red Hat (firefox and thunderbird), Slackware (dnsmasq and vim), SUSE (dpdk, firefox, kernel, libarchive, libcaca, mariadb, openvswitch, opera, permissions, podofo, snakeyaml, sqlite3, unzip, and vsftpd), and Ubuntu (expat, libvpx, linux-azure-fde, linux-oracle, squid, squid3, and webkit2gtk).