Ubuntu 4006-2: Linux kernel (HWE) vulnerability
Summary
Update Instructions
The problem can be corrected by updating your system to the following package versions: Ubuntu 18.04 LTS: linux-image-4.18.0-21-generic 4.18.0-21.22~18.04.1 linux-image-4.18.0-21-generic-lpae 4.18.0-21.22~18.04.1 linux-image-4.18.0-21-lowlatency 4.18.0-21.22~18.04.1 linux-image-4.18.0-21-snapdragon 4.18.0-21.22~18.04.1 linux-image-generic-hwe-18.04 4.18.0.21.71 linux-image-generic-lpae-hwe-18.04 4.18.0.21.71 linux-image-lowlatency-hwe-18.04 4.18.0.21.71 linux-image-snapdragon-hwe-18.04 4.18.0.21.71 After a standard system update you need to reboot your computer to make all the necessary changes. ATTENTION: Due to an unavoidable ABI change the kernel updates have been given a new version number, which requires you to recompile and reinstall all third party kernel modules you might have installed. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual, linux-powerpc), a standard system upgrade will automatically perform this as well.
References
https://ubuntu.com/security/notices/USN-4006-2
https://ubuntu.com/security/notices/USN-4006-1
CVE-2019-11191
Package Information
https://launchpad.net/ubuntu/+source/linux-hwe/4.18.0-21.22~18.04.1