linux-lts-xenial: Linux hardware enablement kernel from Xenial for Trusty - linux-aws: Linux kernel for Amazon Web Services systems Details: USN-3509-2 fixed vulnerabilities in the Linux Hardware Enablement kernel for Ubuntu 14.04 LTS. Unfortunately, it also introduced a regression that prevented the Ceph network filesystem from being used. This update fixes the problem. We apologize for the inconvenience. Original advisory USN-3509-2 introduced a regression in the Linux HWE kernel for Ubuntu 14.04 LTS.