Following in the footsteps of the Debian Project, which recently released a similar kernel security patch for Debian GNU/Linux 9 “Stretch” and Debian GNU/Linux 8 “Jessie” operating system series to address two security vulnerabilities, Canonical also released kernel updates to patch these two flaws and another vulnerability in Ubuntu 17.10, Ubuntu 16.04 LTS, and Ubuntu 14.04 LTS. One of these security vulnerabilities was caused by the way Linux kernel handled debug exceptions delivered via Mov SS or Pop SS instructions, which could allow a local attacker to crash the system by causing a denial of service. The issue (CVE-2018-8897) was discovered by Nick Peterson and affects only the amd64 architecture.