Ubuntu 4909-1: Linux kernel vulnerabilities
Summary
Update Instructions
The problem can be corrected by updating your system to the following package versions: Ubuntu 20.04 LTS: linux-image-5.4.0-1013-gkeop 5.4.0-1013.14 linux-image-5.4.0-1033-raspi 5.4.0-1033.36 linux-image-5.4.0-1037-kvm 5.4.0-1037.38 linux-image-5.4.0-1041-gcp 5.4.0-1041.44 linux-image-5.4.0-1042-oracle 5.4.0-1042.45 linux-image-5.4.0-1043-aws 5.4.0-1043.45 linux-image-5.4.0-1044-azure 5.4.0-1044.46 linux-image-5.4.0-71-generic 5.4.0-71.79 linux-image-5.4.0-71-generic-lpae 5.4.0-71.79 linux-image-5.4.0-71-lowlatency 5.4.0-71.79 linux-image-aws 5.4.0.1043.44 linux-image-azure 5.4.0.1044.42 linux-image-gcp 5.4.0.1041.50 linux-image-generic 5.4.0.71.74 linux-image-generic-lpae 5.4.0.71.74 linux-image-gkeop 5.4.0.1013.16 linux-image-gkeop-5.4 5.4.0.1013.16 linux-image-kvm 5.4.0.1037.35 linux-image-lowlatency 5.4.0.71.74 linux-image-oem 5.4.0.71.74 linux-image-oem-osp1 5.4.0.71.74 linux-image-oracle 5.4.0.1042.39 linux-image-raspi 5.4.0.1033.68 linux-image-raspi2 5.4.0.1033.68 linux-image-virtual 5.4.0.71.74 Ubuntu 18.04 LTS: linux-image-5.4.0-1013-gkeop 5.4.0-1013.14~18.04.1 linux-image-5.4.0-1033-raspi 5.4.0-1033.36~18.04.1 linux-image-5.4.0-1040-gke 5.4.0-1040.42~18.04.1 linux-image-5.4.0-1041-gcp 5.4.0-1041.44~18.04.1 linux-image-5.4.0-1042-oracle 5.4.0-1042.45~18.04.1 linux-image-5.4.0-1043-aws 5.4.0-1043.45~18.04.1 linux-image-5.4.0-1044-azure 5.4.0-1044.46~18.04.1 linux-image-5.4.0-71-generic 5.4.0-71.79~18.04.1 linux-image-5.4.0-71-generic-lpae 5.4.0-71.79~18.04.1 linux-image-5.4.0-71-lowlatency 5.4.0-71.79~18.04.1 linux-image-aws 5.4.0.1043.26 linux-image-azure 5.4.0.1044.24 linux-image-gcp 5.4.0.1041.28 linux-image-generic-hwe-18.04 5.4.0.71.79~18.04.64 linux-image-generic-lpae-hwe-18.04 5.4.0.71.79~18.04.64 linux-image-gke-5.4 5.4.0.1040.42~18.04.7 linux-image-gkeop-5.4 5.4.0.1013.14~18.04.14 linux-image-lowlatency-hwe-18.04 5.4.0.71.79~18.04.64 linux-image-oem 5.4.0.71.79~18.04.64 linux-image-oem-osp1 5.4.0.71.79~18.04.64 linux-image-oracle 5.4.0.1042.45~18.04.24 linux-image-raspi-hwe-18.04 5.4.0.1033.35 linux-image-snapdragon-hwe-18.04 5.4.0.71.79~18.04.64 linux-image-virtual-hwe-18.04 5.4.0.71.79~18.04.64 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-4909-1
CVE-2021-20194, CVE-2021-26930, CVE-2021-26931, CVE-2021-3348
Package Information
https://launchpad.net/ubuntu/+source/linux/5.4.0-71.79 https://launchpad.net/ubuntu/+source/linux-aws/5.4.0-1043.45 https://launchpad.net/ubuntu/+source/linux-azure/5.4.0-1044.46 https://launchpad.net/ubuntu/+source/linux-gcp/5.4.0-1041.44 https://launchpad.net/ubuntu/+source/linux-gkeop/5.4.0-1013.14 https://launchpad.net/ubuntu/+source/linux-kvm/5.4.0-1037.38 https://launchpad.net/ubuntu/+source/linux-oracle/5.4.0-1042.45 https://launchpad.net/ubuntu/+source/linux-raspi/5.4.0-1033.36 https://launchpad.net/ubuntu/+source/linux-aws-5.4/5.4.0-1043.45~18.04.1 https://launchpad.net/ubuntu/+source/linux-azure-5.4/5.4.0-1044.46~18.04.1 https://launchpad.net/ubuntu/+source/linux-gcp-5.4/5.4.0-1041.44~18.04.1 https://launchpad.net/ubuntu/+source/linux-gke-5.4/5.4.0-1040.42~18.04.1 https://launchpad.net/ubuntu/+source/linux-gkeop-5.4/5.4.0-1013.14~18.04.1 https://launchpad.net/ubuntu/+source/linux-hwe-5.4/5.4.0-71.79~18.04.1 https://launchpad.net/ubuntu/+source/linux-oracle-5.4/5.4.0-1042.45~18.04.1 https://launchpad.net/ubuntu/+source/linux-raspi-5.4/5.4.0-1033.36~18.04.1