The Ubuntu developers have been working on making live kernel patching available to older versions of their operating system. Live kernel patching allows security flaws to be fixed in the Linux kernel without rebooting the operating system. This allows for systems to be left running longer while still keeping them up to date. "We are pleased to announce that we have extended our Canonical Kernel Livepatch Service to users running Ubuntu 14.04 LTS! The Canonical Kernel Livepatch Service enables runtime correction of critical security vulnerabilities in the kernel without the need to reboot. It is the best way to ensure that machines are safe at the kernel level, while guaranteeing uptime, especially for container hosts where a single machine may be running thousands of different workloads." A blog post on the Ubuntu Insights page explains how to enable live kernel patching.