Security updates for Monday

Security updates have been issued by CentOS (polkit), Debian (chromium, openjpeg2, php7.0, poppler, and symfony), Fedora (evolution, kernel, and kernel-headers), Gentoo (curl, firefox, keepalived, rdesktop, systemd, tar, wget, and zsh), openSUSE (gdm and hiawatha), Slackware (ntp), SUSE (audit, containerd, docker, docker-runc, golang-github-docker-libnetwork, runc, file, java-1_8_0-openjdk, mariadb, openssl-1_0_0, and sssd), and Ubuntu (poppler).