The Canonical Livepatch Service is Available to all Ubuntu Advantage customers, and also for personal use for free up to a maximum of three Ubuntu 16.04 LTS and 14.04 LTS systems. It updates your Ubuntu your systems with the highest and most critical security vulnerabilities, without requiring a reboot in order to take effect.
The Livepatch service is available for the generic flavour of the 64-bit Intel/AMD (aka, x86_64, amd64) builds of the Ubuntu 16.04 LTS (Xenial) kernel, which is a Linux 4.4 kernel, as well as Ubuntu 14.04 LTS running the Linux 4.4 Hardware Enablement kernel. It works with unmodified Ubuntu kernels on Ubuntu 16.04 LTS and 14.04 LTS Servers and Desktops, on physical machines, virtual machines, and in the cloud. As mentioned before, Ubuntu 14.04 LTS systems must use the Hardware Enablement kernel. Additionally, network access to the Canonical Livepatch Service (https://livepatch.canonical.com:443) and the latest version of snapd (at least 2.15) are needed.
How to get security notices for Livepatch
IN PROGRESS: Subscribe to the security-announce mailing list to get information on Kernel Live Patch Security Notice (LSN).