Ubuntu 17.04 Zesty Zapus reaches end of its life today on Jan 13. Ubuntu Security Notices will no longer include information or updated packages for Ubuntu 17.04.
Ubuntu announced its 17.04 (Zesty Zapus) release almost 9 months ago, on April 13, 2017. As a non-LTS release, 17.04 has a 9-month support cycle and, as such, will reach end of life on Saturday, January 13th.
At that time, Ubuntu Security Notices will no longer include information or updated packages for Ubuntu 17.04.
The supported upgrade path from Ubuntu 17.04 is via Ubuntu 17.10. Instructions and caveats for the upgrade may be found at:
Note that is NOT patched against Meltdown and Spectre vulnerabilities due to the End of Life timing. Users are advised to upgrade to Ubuntu 17.10 and install the updated kernel packages.
Development of a complete response to the highly-publicized Meltdown and Spectre vulnerabilities is ongoing, and due to the timing with respect to this End of Life, we will not be providing updated Linux kernel packages for Ubuntu 17.04. We advise users to upgrade to Ubuntu 17.10 and install the updated kernel packages for that release when they become available.
Read the announcement for more details.