Security updates for Tuesday
Security updates have been issued by Debian (corosync, linux-tools, qemu, qemu-kvm, and r-cran-readxl), openSUSE (evince, memcached, nodejs4, ntp, pdns-recursor, python-gunicorn, python3-gunicorn, and python3), and Ubuntu (ruby1.9.1, ruby2.0, ruby2.3).