Security updates for Monday

Security updates have been issued by Debian (libosip2, openoffice.org-dictionaries, and qbittorrent), Fedora (kernel, libpng12, libsndfile, libtiff, mediawiki, mupdf, qt5-qtwebengine, samba, xen, xorgxrdp, and xrdp), Mageia (mediawiki, ming, python-django, unshield, and webkit2), and openSUSE (postgresql93).