The new kernel update comes hot on the heels of the kernel security updates that Canonical released last week for the Ubuntu 14.04 LTS (Trusty Tahr) and Ubuntu 17.04 (Zesty Zapus) users, patching a total of six vulnerabilities affecting the Linux 4.4 LTS kernel on all supported architectures, including 64-bit, 32-bit, PowerPC, PPC64el, Raspberry Pi 2 and Snapdragon processors. Among the security issues fixed by this update, we can mention a Linux kernel flaw (CVE-2014-9900) that made it impossible to initialize a Wake-on-Lan data structure, thus allowing a local attacker to expose sensitive information from kernel memory, and the inability of Linux kernel to properly restrict access to /proc/iomem, which could allow a local attacker to expose sensitive information (CVE-2015-8944).