Canonical released a kernel security update for all supported Ubuntu Linux distributions, which fixes more than 20 security vulnerabilities found in the upstream kernel by several researchers.
The new kernel security update is available for Ubuntu 22.10 (Kinetic Kudu), Ubuntu 22.04 LTS (Jammy Jellyfish), Ubuntu 20.04 LTS (Focal Fossa), Ubuntu 18.04 LTS (Bionic Beaver), and Ubuntu 16.04 and Ubuntu 14.04 ESM (Extended Security Maintenance) versions.
The most critical security vulnerability in these massive Ubuntu kernel updates is CVE-2022-2663, a vulnerability discovered by David Leadbeater in the Netfilter IRC protocol trace implementation.
The vulnerability could allow remote attackers to cause a denial of service or bypass firewalls. All Ubuntu versions are affected except Ubuntu 18.04 LTS, Ubuntu 16.04 ESM, and Ubuntu 14.04 ESM systems running Linux kernel 4.15.
