A few weekend security updates

Arch has updatednodejs (two denial-of-service vulnerabilities),openssl (four CVEs), andpython-django (information disclosure).

Mageia has updatedcups-filters (code execution),moodle (nine CVEs),openssl (four CVEs), andpython-django (information disclosure).

Ubuntu has updated kernel (twodenial-of-service vulnerabilities) andlinux-lts-vivid (ditto).