Ubuntu 5211-1: Linux kernel vulnerability
Summary
Update Instructions
The problem can be corrected by updating your system to the following package versions: Ubuntu 16.04 ESM: linux-image-4.4.0-1099-kvm 4.4.0-1099.108 linux-image-4.4.0-1134-aws 4.4.0-1134.148 linux-image-4.4.0-218-generic 4.4.0-218.251 linux-image-4.4.0-218-lowlatency 4.4.0-218.251 linux-image-aws 4.4.0.1134.139 linux-image-generic 4.4.0.218.225 linux-image-kvm 4.4.0.1099.97 linux-image-lowlatency 4.4.0.218.225 linux-image-virtual 4.4.0.218.225 Ubuntu 14.04 ESM: linux-image-3.13.0-189-generic 3.13.0-189.240 linux-image-3.13.0-189-generic-lpae 3.13.0-189.240 linux-image-3.13.0-189-lowlatency 3.13.0-189.240 linux-image-4.4.0-1098-aws 4.4.0-1098.103 linux-image-4.4.0-218-generic 4.4.0-218.251~14.04.1 linux-image-4.4.0-218-lowlatency 4.4.0-218.251~14.04.1 linux-image-aws 4.4.0.1098.96 linux-image-generic 3.13.0.189.198 linux-image-generic-lpae 3.13.0.189.198 linux-image-generic-lts-xenial 4.4.0.218.189 linux-image-lowlatency 3.13.0.189.198 linux-image-lowlatency-lts-xenial 4.4.0.218.189 linux-image-server 3.13.0.189.198 linux-image-virtual 3.13.0.189.198 linux-image-virtual-lts-xenial 4.4.0.218.189 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-5211-1
CVE-2021-4002
Package Information