Ubuntu 14.04 ESM. Several security issues were fixed in the Linux kernel. USN-4227-1 fixed vulnerabilities in the Linux kernel for Ubuntu 18.04 LTS. This update provides the corresponding updates for the Linux kernel for Microsoft Azure Cloud systems for Ubuntu 14.04 ESM. It was discovered that a heap-based buffer overflow existed in the Marvell WiFi-Ex Driver for the Linux kernel.
Link: USN-4227-2: Linux kernel (Azure) vulnerabilities