Ubuntu 3631-1: 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-4.4.0-1021-kvm 4.4.0-1021.26 linux-image-4.4.0-1055-aws 4.4.0-1055.64 linux-image-4.4.0-1087-raspi2 4.4.0-1087.95 linux-image-4.4.0-1090-snapdragon 4.4.0-1090.95 linux-image-4.4.0-121-generic 4.4.0-121.145 linux-image-4.4.0-121-generic-lpae 4.4.0-121.145 linux-image-4.4.0-121-lowlatency 4.4.0-121.145 linux-image-4.4.0-121-powerpc-e500mc 4.4.0-121.145 linux-image-4.4.0-121-powerpc-smp 4.4.0-121.145 linux-image-4.4.0-121-powerpc64-emb 4.4.0-121.145 linux-image-4.4.0-121-powerpc64-smp 4.4.0-121.145 linux-image-aws 4.4.0.1055.57 linux-image-generic 4.4.0.121.127 linux-image-generic-lpae 4.4.0.121.127 linux-image-kvm 4.4.0.1021.20 linux-image-lowlatency 4.4.0.121.127 linux-image-powerpc-e500mc 4.4.0.121.127 linux-image-powerpc-smp 4.4.0.121.127 linux-image-powerpc64-emb 4.4.0.121.127 linux-image-powerpc64-smp 4.4.0.121.127 linux-image-raspi2 4.4.0.1087.87 linux-image-snapdragon 4.4.0.1090.82 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-3631-1
CVE-2017-13305, CVE-2017-16538, CVE-2018-1000004, CVE-2018-5750,
CVE-2018-7566
Package Information
https://launchpad.net/ubuntu/+source/linux/4.4.0-121.145 https://launchpad.net/ubuntu/+source/linux-aws/4.4.0-1055.64 https://launchpad.net/ubuntu/+source/linux-kvm/4.4.0-1021.26 https://launchpad.net/ubuntu/+source/linux-raspi2/4.4.0-1087.95 https://launchpad.net/ubuntu/+source/linux-snapdragon/4.4.0-1090.95