Ubuntu 4876-1: Linux kernel vulnerabilities
Summary
Update Instructions
The problem can be corrected by updating your system to the following package versions: Ubuntu 16.04 LTS: linux-image-4.4.0-1089-kvm 4.4.0-1089.98 linux-image-4.4.0-1123-aws 4.4.0-1123.137 linux-image-4.4.0-1147-raspi2 4.4.0-1147.157 linux-image-4.4.0-1151-snapdragon 4.4.0-1151.161 linux-image-4.4.0-204-generic 4.4.0-204.236 linux-image-4.4.0-204-generic-lpae 4.4.0-204.236 linux-image-4.4.0-204-lowlatency 4.4.0-204.236 linux-image-4.4.0-204-powerpc-e500mc 4.4.0-204.236 linux-image-4.4.0-204-powerpc-smp 4.4.0-204.236 linux-image-4.4.0-204-powerpc64-emb 4.4.0-204.236 linux-image-4.4.0-204-powerpc64-smp 4.4.0-204.236 linux-image-aws 4.4.0.1123.128 linux-image-generic 4.4.0.204.210 linux-image-generic-lpae 4.4.0.204.210 linux-image-kvm 4.4.0.1089.87 linux-image-lowlatency 4.4.0.204.210 linux-image-powerpc-e500mc 4.4.0.204.210 linux-image-powerpc-smp 4.4.0.204.210 linux-image-powerpc64-emb 4.4.0.204.210 linux-image-powerpc64-smp 4.4.0.204.210 linux-image-raspi2 4.4.0.1147.147 linux-image-snapdragon 4.4.0.1151.143 linux-image-virtual 4.4.0.204.210 Ubuntu 14.04 ESM: linux-image-4.4.0-1087-aws 4.4.0-1087.91 linux-image-4.4.0-204-generic 4.4.0-204.236~14.04.1 linux-image-4.4.0-204-generic-lpae 4.4.0-204.236~14.04.1 linux-image-4.4.0-204-lowlatency 4.4.0-204.236~14.04.1 linux-image-4.4.0-204-powerpc-e500mc 4.4.0-204.236~14.04.1 linux-image-4.4.0-204-powerpc-smp 4.4.0-204.236~14.04.1 linux-image-4.4.0-204-powerpc64-emb 4.4.0-204.236~14.04.1 linux-image-4.4.0-204-powerpc64-smp 4.4.0-204.236~14.04.1 linux-image-aws 4.4.0.1087.84 linux-image-generic-lpae-lts-xenial 4.4.0.204.178 linux-image-generic-lts-xenial 4.4.0.204.178 linux-image-lowlatency-lts-xenial 4.4.0.204.178 linux-image-powerpc-e500mc-lts-xenial 4.4.0.204.178 linux-image-powerpc-smp-lts-xenial 4.4.0.204.178 linux-image-powerpc64-emb-lts-xenial 4.4.0.204.178 linux-image-powerpc64-smp-lts-xenial 4.4.0.204.178 linux-image-virtual-lts-xenial 4.4.0.204.178 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-4876-1
CVE-2020-29569, CVE-2020-36158, CVE-2021-3178
Package Information
https://launchpad.net/ubuntu/+source/linux/4.4.0-204.236 https://launchpad.net/ubuntu/+source/linux-aws/4.4.0-1123.137 https://launchpad.net/ubuntu/+source/linux-kvm/4.4.0-1089.98 https://launchpad.net/ubuntu/+source/linux-raspi2/4.4.0-1147.157 https://launchpad.net/ubuntu/+source/linux-snapdragon/4.4.0-1151.161