The problem can be corrected by updating your system to the following package versions: Ubuntu 16.04 LTS: linux-image-4.4.0-1077-kvm 4.4.0-1077.84 linux-image-4.4.0-1111-aws 4.4.0-1111.123 linux-image-4.4.0-1136-raspi2 4.4.0-1136.145 linux-image-4.4.0-1140-snapdragon 4.4.0-1140.148 linux-image-4.4.0-186-generic 4.4.0-186.216 linux-image-4.4.0-186-generic-lpae 4.4.0-186.216 linux-image-4.4.0-186-lowlatency 4.4.0-186.216 linux-image-4.4.0-186-powerpc-e500mc 4.4.0-186.216 linux-image-4.4.0-186-powerpc-smp 4.4.0-186.216 linux-image-4.4.0-186-powerpc64-emb 4.4.0-186.216 linux-image-4.4.0-186-powerpc64-smp 4.4.0-186.216 linux-image-aws 4.4.0.1111.116 linux-image-generic 4.4.0.186.192 linux-image-generic-lpae 4.4.0.186.192 linux-image-kvm 4.4.0.1077.75 linux-image-lowlatency 4.4.0.186.192 linux-image-powerpc-e500mc 4.4.0.186.192 linux-image-powerpc-smp 4.4.0.186.192 linux-image-powerpc64-emb 4.4.0.186.192 linux-image-powerpc64-smp 4.4.0.186.192 linux-image-raspi2 4.4.0.1136.136 linux-image-snapdragon 4.4.0.1140.132 linux-image-virtual 4.4.0.186.192 Ubuntu 14.04 ESM: linux-image-4.4.0-1075-aws 4.4.0-1075.79 linux-image-4.4.0-186-generic 4.4.0-186.216~14.04.1 linux-image-4.4.0-186-generic-lpae 4.4.0-186.216~14.04.1 linux-image-4.4.0-186-lowlatency 4.4.0-186.216~14.04.1 linux-image-4.4.0-186-powerpc-e500mc 4.4.0-186.216~14.04.1 linux-image-4.4.0-186-powerpc-smp 4.4.0-186.216~14.04.1 linux-image-4.4.0-186-powerpc64-emb 4.4.0-186.216~14.04.1 linux-image-4.4.0-186-powerpc64-smp 4.4.0-186.216~14.04.1 linux-image-aws 4.4.0.1075.72 linux-image-generic-lpae-lts-xenial 4.4.0.186.163 linux-image-generic-lts-xenial 4.4.0.186.163 linux-image-lowlatency-lts-xenial 4.4.0.186.163 linux-image-powerpc-e500mc-lts-xenial 4.4.0.186.163 linux-image-powerpc-smp-lts-xenial 4.4.0.186.163 linux-image-powerpc64-emb-lts-xenial 4.4.0.186.163 linux-image-powerpc64-smp-lts-xenial 4.4.0.186.163 linux-image-virtual-lts-xenial 4.4.0.186.163 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.
https://ubuntu.com/security/notices/USN-4427-1
CVE-2019-12380, CVE-2019-19947, CVE-2019-20810, CVE-2019-20908,
CVE-2020-10732, CVE-2020-10766, CVE-2020-10767, CVE-2020-10768,
CVE-2020-11935, CVE-2020-13974
https://launchpad.net/ubuntu/+source/linux/4.4.0-186.216 https://launchpad.net/ubuntu/+source/linux-aws/4.4.0-1111.123 https://launchpad.net/ubuntu/+source/linux-kvm/4.4.0-1077.84 https://launchpad.net/ubuntu/+source/linux-raspi2/4.4.0-1136.145 https://launchpad.net/ubuntu/+source/linux-snapdragon/4.4.0-1140.148
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