Security updates for Monday

Security updates have been issued by Debian (trafficserver), Fedora (freeciv, gnutls, kernel, libldb, mingw-gdk-pixbuf, owncloud-client, rust-ffsend, samba, thunderbird, and zlib), Gentoo (apache, binutils, chromium, glibc, gstreamer, libarchive, libebml, nokogiri, puma, qemu, xen, and xterm), Mageia (golang, libtiff, poppler, python-django, and ruby-sinatra), Red Hat (.NET 6.0 and .NET Core 3.1), SUSE (chromium, cifs-utils, kernel, open-iscsi, and trousers), and Ubuntu (webkit2gtk).