The newly patched Linux kernel vulnerabilities affect Ubuntu 17.10 (Artful Aardvark), Ubuntu 17.04 (Zesty Zapus), Ubuntu 16.04 LTS (Xenial Xerus), Ubuntu 14.04 LTS (Trusty Tahr), and Ubuntu 12.04 (Precise Pangolin) ESM (Extended Security Maintenance), as well as all of their official derivatives, including Kubuntu, Lubuntu, etc. They include a use-after-free vulnerability discovered by Mohamed Ghannam in Linux kernel’s Netlink subsystem (XFRM) and inabilit of the Linux kernel to correctly handle copy-on-write (CoW) of transparent huge pages, which affected all the supported Ubuntu releases and their derivatives.