Just two days after releasing a regular Linux kernel security update for the Ubuntu 18.04 LTS (Bionic Beaver) and Ubuntu 16.04 LTS (Xenial Xerus) operating system series that addressed a total of nine vulnerabilities, there’s now a rebootless kernel update for users who use Canonical’s Livepatch service. The update only patches a single security vulnerability (CVE-2020-11494), which was discovered in Linux kernel’s Serial CAN interface driver. Apparently, the driver failed to properly initialize data, thus allowing a local attacker to expose sensitive information (kernel memory).