Security updates for Friday

Security updates have been issued by Debian (libapache-mod-jk, libav, and netatalk), Fedora (kernel-headers, kernel-tools, and phpMyAdmin), Gentoo (go), Mageia (netty, jctools, php, and phpmyadmin), openSUSE (keepalived), Scientific Linux (ntp), SUSE (enigmail, libqt5-qtbase, mariadb, netatalk, and yast2-rmt), and Ubuntu (kernel, linux, linux-aws, linux-azure, linux-gcp, linux-kvm, linux-raspi2, linux, linux-aws, linux-kvm, linux-raspi2, linux-snapdragon, linux-azure, linux-hwe, linux-aws-hwe, linux-azure, linux-gcp, linux-lts-trusty, linux-lts-xenial, linux-aws, and linux-raspi2).