Ubuntu 4463-1: 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-4.4.0-1078-kvm 4.4.0-1078.85 linux-image-4.4.0-1112-aws 4.4.0-1112.124 linux-image-4.4.0-1137-raspi2 4.4.0-1137.146 linux-image-4.4.0-1141-snapdragon 4.4.0-1141.149 linux-image-4.4.0-187-generic 4.4.0-187.217 linux-image-4.4.0-187-generic-lpae 4.4.0-187.217 linux-image-4.4.0-187-lowlatency 4.4.0-187.217 linux-image-4.4.0-187-powerpc-e500mc 4.4.0-187.217 linux-image-4.4.0-187-powerpc-smp 4.4.0-187.217 linux-image-4.4.0-187-powerpc64-emb 4.4.0-187.217 linux-image-4.4.0-187-powerpc64-smp 4.4.0-187.217 linux-image-aws 4.4.0.1112.117 linux-image-generic 4.4.0.187.193 linux-image-generic-lpae 4.4.0.187.193 linux-image-kvm 4.4.0.1078.76 linux-image-lowlatency 4.4.0.187.193 linux-image-powerpc-e500mc 4.4.0.187.193 linux-image-powerpc-smp 4.4.0.187.193 linux-image-powerpc64-emb 4.4.0.187.193 linux-image-powerpc64-smp 4.4.0.187.193 linux-image-raspi2 4.4.0.1137.137 linux-image-snapdragon 4.4.0.1141.133 linux-image-virtual 4.4.0.187.193 Ubuntu 14.04 ESM: linux-image-4.4.0-1076-aws 4.4.0-1076.80 linux-image-4.4.0-187-generic 4.4.0-187.217~14.04.1 linux-image-4.4.0-187-generic-lpae 4.4.0-187.217~14.04.1 linux-image-4.4.0-187-lowlatency 4.4.0-187.217~14.04.1 linux-image-4.4.0-187-powerpc-e500mc 4.4.0-187.217~14.04.1 linux-image-4.4.0-187-powerpc-smp 4.4.0-187.217~14.04.1 linux-image-4.4.0-187-powerpc64-emb 4.4.0-187.217~14.04.1 linux-image-4.4.0-187-powerpc64-smp 4.4.0-187.217~14.04.1 linux-image-aws 4.4.0.1076.73 linux-image-generic-lpae-lts-xenial 4.4.0.187.164 linux-image-generic-lts-xenial 4.4.0.187.164 linux-image-lowlatency-lts-xenial 4.4.0.187.164 linux-image-powerpc-e500mc-lts-xenial 4.4.0.187.164 linux-image-powerpc-smp-lts-xenial 4.4.0.187.164 linux-image-powerpc64-emb-lts-xenial 4.4.0.187.164 linux-image-powerpc64-smp-lts-xenial 4.4.0.187.164 linux-image-virtual-lts-xenial 4.4.0.187.164 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-4463-1
CVE-2020-12771, CVE-2020-15393
Package Information
https://launchpad.net/ubuntu/+source/linux/4.4.0-187.217 https://launchpad.net/ubuntu/+source/linux-aws/4.4.0-1112.124 https://launchpad.net/ubuntu/+source/linux-kvm/4.4.0-1078.85 https://launchpad.net/ubuntu/+source/linux-raspi2/4.4.0-1137.146 https://launchpad.net/ubuntu/+source/linux-snapdragon/4.4.0-1141.149