========================================================================= Ubuntu Security Notice USN-5135-1 November 09, 2021 linux, linux-aws, linux-aws-5.11, linux-azure, linux-azure-5.11, linux-gcp, linux-gcp-5.11, linux-hwe-5.11, linux-kvm, linux-oem-5.13, linux-oracle, linux-oracle-5.11 vulnerability ========================================================================= A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 21.10 - Ubuntu 21.04 - Ubuntu 20.04 LTS Summary: The system could be made to crash under certain conditions. Software Description: - linux: Linux kernel - linux-aws: Linux kernel for Amazon Web Services (AWS) systems - linux-azure: Linux kernel for Microsoft Azure Cloud systems - linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems - linux-kvm: Linux kernel for cloud environments - linux-oracle: Linux kernel for Oracle Cloud systems - linux-aws-5.11: Linux kernel for Amazon Web Services (AWS) systems - linux-azure-5.11: Linux kernel for Microsoft Azure cloud systems - linux-gcp-5.11: Linux kernel for Google Cloud Platform (GCP) systems - linux-hwe-5.11: Linux hardware enablement (HWE) kernel - linux-oem-5.13: Linux kernel for OEM systems - linux-oracle-5.11: Linux kernel for Oracle Cloud systems Details: It was discovered that the Linux kernel did not properly account for the memory usage of certain IPC objects. A local attacker could use this to cause a denial of service (memory exhaustion). Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 21.10: linux-image-5.13.0-1005-kvm 5.13.0-1005.5 linux-image-5.13.0-1006-aws 5.13.0-1006.7 linux-image-5.13.0-1006-gcp 5.13.0-1006.7 linux-image-5.13.0-1007-azure 5.13.0-1007.8 linux-image-5.13.0-1009-oracle 5.13.0-1009.11 linux-image-5.13.0-21-generic 5.13.0-21.21 linux-image-5.13.0-21-generic-64k 5.13.0-21.21 linux-image-5.13.0-21-generic-lpae 5.13.0-21.21 linux-image-5.13.0-21-lowlatency 5.13.0-21.21 linux-image-aws 5.13.0.1006.8 linux-image-azure 5.13.0.1007.8 linux-image-gcp 5.13.0.1006.7 linux-image-generic 5.13.0.21.32 linux-image-generic-64k 5.13.0.21.32 linux-image-generic-lpae 5.13.0.21.32 linux-image-gke 5.13.0.1006.7 linux-image-kvm 5.13.0.1005.5 linux-image-lowlatency 5.13.0.21.32 linux-image-oem-20.04 5.13.0.21.32 linux-image-oracle 5.13.0.1009.11 linux-image-virtual 5.13.0.21.32 Ubuntu 21.04: linux-image-5.11.0-1019-kvm 5.11.0-1019.21 linux-image-5.11.0-1021-aws 5.11.0-1021.22 linux-image-5.11.0-1021-azure 5.11.0-1021.22 linux-image-5.11.0-1021-oracle 5.11.0-1021.22 linux-image-5.11.0-1022-gcp 5.11.0-1022.24 linux-image-5.11.0-40-generic 5.11.0-40.44 linux-image-5.11.0-40-generic-64k 5.11.0-40.44 linux-image-5.11.0-40-generic-lpae 5.11.0-40.44 linux-image-5.11.0-40-lowlatency 5.11.0-40.44 linux-image-aws 5.11.0.1021.22 linux-image-azure 5.11.0.1021.22 linux-image-gcp 5.11.0.1022.22 linux-image-generic 5.11.0.40.41 linux-image-generic-64k 5.11.0.40.41 linux-image-generic-lpae 5.11.0.40.41 linux-image-gke 5.11.0.1022.22 linux-image-kvm 5.11.0.1019.20 linux-image-lowlatency 5.11.0.40.41 linux-image-oem-20.04 5.11.0.40.41 linux-image-oracle 5.11.0.1021.22 linux-image-virtual 5.11.0.40.41 Ubuntu 20.04 LTS: linux-image-5.11.0-1021-aws 5.11.0-1021.22~20.04.2 linux-image-5.11.0-1021-azure 5.11.0-1021.22~20.04.1 linux-image-5.11.0-1021-oracle 5.11.0-1021.22~20.04.1 linux-image-5.11.0-1022-gcp 5.11.0-1022.24~20.04.1 linux-image-5.11.0-40-generic 5.11.0-40.44~20.04.2 linux-image-5.11.0-40-generic-64k 5.11.0-40.44~20.04.2 linux-image-5.11.0-40-generic-lpae 5.11.0-40.44~20.04.2 linux-image-5.11.0-40-lowlatency 5.11.0-40.44~20.04.2 linux-image-5.13.0-1019-oem 5.13.0-1019.23 linux-image-aws 5.11.0.1021.22~20.04.20 linux-image-azure 5.11.0.1021.22~20.04.21 linux-image-gcp 5.11.0.1022.24~20.04.21 linux-image-generic-64k-hwe-20.04 5.11.0.40.44~20.04.18 linux-image-generic-hwe-20.04 5.11.0.40.44~20.04.18 linux-image-generic-lpae-hwe-20.04 5.11.0.40.44~20.04.18 linux-image-lowlatency-hwe-20.04 5.11.0.40.44~20.04.18 linux-image-oem-20.04c 5.13.0.1019.23 linux-image-oracle 5.11.0.1021.22~20.04.14 linux-image-virtual-hwe-20.04 5.11.0.40.44~20.04.18 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-5135-1 CVE-2021-3759 Package Information: https://launchpad.net/ubuntu/+source/linux/5.13.0-21.21 https://launchpad.net/ubuntu/+source/linux-aws/5.13.0-1006.7 https://launchpad.net/ubuntu/+source/linux-azure/5.13.0-1007.8 https://launchpad.net/ubuntu/+source/linux-gcp/5.13.0-1006.7 https://launchpad.net/ubuntu/+source/linux-kvm/5.13.0-1005.5 https://launchpad.net/ubuntu/+source/linux-oracle/5.13.0-1009.11 https://launchpad.net/ubuntu/+source/linux/5.11.0-40.44 https://launchpad.net/ubuntu/+source/linux-aws/5.11.0-1021.22 https://launchpad.net/ubuntu/+source/linux-azure/5.11.0-1021.22 https://launchpad.net/ubuntu/+source/linux-gcp/5.11.0-1022.24 https://launchpad.net/ubuntu/+source/linux-kvm/5.11.0-1019.21 https://launchpad.net/ubuntu/+source/linux-oracle/5.11.0-1021.22 https://launchpad.net/ubuntu/+source/linux-aws-5.11/5.11.0-1021.22~20.04.2 https://launchpad.net/ubuntu/+source/linux-azure-5.11/5.11.0-1021.22~20.04.1 https://launchpad.net/ubuntu/+source/linux-gcp-5.11/5.11.0-1022.24~20.04.1 https://launchpad.net/ubuntu/+source/linux-hwe-5.11/5.11.0-40.44~20.04.2 https://launchpad.net/ubuntu/+source/linux-oem-5.13/5.13.0-1019.23 https://launchpad.net/ubuntu/+source/linux-oracle-5.11/5.11.0-1021.22~20.04.1