Ubuntu 18.04's Heavily Patched Kernel Opens Door To Lockdown Bypass, Breaks Secure Boot

With Ubuntu 18.04 when running on its Linux 4.15 kernel and not one of the newer hardware enablement kernels, in the mess of patches back-ported to the release it ends up being vulnerable to bypassing the kernel lockdown security and compromising UEFI Secure Boot that is persistent across reboots...