It would appear that this is the first HWE (Hardware Enablement) kernel that Canonical releases for both Ubuntu 16.10 and Ubuntu 16.04.2 LTS users, patching the Linux 4.8 kernel packages to address a single security vulnerability that could allow a local attacker to elevate his/her privileges or crash the affected system via DoS attack. Canonical also backported the fix for CVE-2017-2636 to the Linux 4.4 kernel that’s currently being maintained for Ubuntu 16.04 LTS and Ubuntu 16.04.1 LTS users, as well as Ubuntu 14.04.5 LTS and Ubuntu 12.04.5 LTS users with the Xenial HWE and Trusty HWE kernels installed.