[USN-5219-1] Linux kernel vulnerability

========================================================================== Ubuntu Security Notice USN-5219-1 January 11, 2022
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-5.10, linux-oracle, linux-oracle-5.11, linux-raspi 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 or run programs as an administrator.
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-raspi: Linux kernel for Raspberry Pi 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-5.10: Linux kernel for OEM systems – linux-oracle-5.11: Linux kernel for Oracle Cloud systems
Details:
It was discovered that the eBPF implementation in the Linux kernel did not properly validate the memory size of certain ring buffer operation arguments. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code.
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 21.10: linux-image-5.13.0-1008-kvm 5.13.0-1008.8 linux-image-5.13.0-1009-aws 5.13.0-1009.10 linux-image-5.13.0-1010-azure 5.13.0-1010.11 linux-image-5.13.0-1010-gcp 5.13.0-1010.12 linux-image-5.13.0-1013-oracle 5.13.0-1013.16 linux-image-5.13.0-1013-raspi 5.13.0-1013.15 linux-image-5.13.0-1013-raspi-nolpae 5.13.0-1013.15 linux-image-5.13.0-25-generic 5.13.0-25.26 linux-image-5.13.0-25-generic-64k 5.13.0-25.26 linux-image-5.13.0-25-generic-lpae 5.13.0-25.26 linux-image-5.13.0-25-lowlatency 5.13.0-25.26 linux-image-aws 5.13.0.1009.11 linux-image-azure 5.13.0.1010.11 linux-image-gcp 5.13.0.1010.10 linux-image-generic 5.13.0.25.36 linux-image-generic-64k 5.13.0.25.36 linux-image-generic-lpae 5.13.0.25.36 linux-image-gke 5.13.0.1010.10 linux-image-kvm 5.13.0.1008.8 linux-image-lowlatency 5.13.0.25.36 linux-image-oem-20.04 5.13.0.25.36 linux-image-oracle 5.13.0.1013.14 linux-image-raspi 5.13.0.1013.19 linux-image-raspi-nolpae 5.13.0.1013.19 linux-image-virtual 5.13.0.25.36
Ubuntu 21.04: linux-image-5.11.0-1022-kvm 5.11.0-1022.24 linux-image-5.11.0-1025-aws 5.11.0-1025.27 linux-image-5.11.0-1025-azure 5.11.0-1025.27 linux-image-5.11.0-1025-oracle 5.11.0-1025.27 linux-image-5.11.0-1025-raspi 5.11.0-1025.27 linux-image-5.11.0-1025-raspi-nolpae 5.11.0-1025.27 linux-image-5.11.0-1026-gcp 5.11.0-1026.29 linux-image-5.11.0-46-generic 5.11.0-46.51 linux-image-5.11.0-46-generic-64k 5.11.0-46.51 linux-image-5.11.0-46-generic-lpae 5.11.0-46.51 linux-image-5.11.0-46-lowlatency 5.11.0-46.51 linux-image-aws 5.11.0.1025.25 linux-image-azure 5.11.0.1025.25 linux-image-gcp 5.11.0.1026.25 linux-image-generic 5.11.0.46.46 linux-image-generic-64k 5.11.0.46.46 linux-image-generic-lpae 5.11.0.46.46 linux-image-gke 5.11.0.1026.25 linux-image-kvm 5.11.0.1022.23 linux-image-lowlatency 5.11.0.46.46 linux-image-oem-20.04 5.11.0.46.46 linux-image-oracle 5.11.0.1025.25 linux-image-raspi 5.11.0.1025.23 linux-image-raspi-nolpae 5.11.0.1025.23 linux-image-virtual 5.11.0.46.46
Ubuntu 20.04 LTS: linux-image-5.10.0-1055-oem 5.10.0-1055.58 linux-image-5.11.0-1025-aws 5.11.0-1025.27~20.04.1 linux-image-5.11.0-1025-azure 5.11.0-1025.27~20.04.1 linux-image-5.11.0-1025-oracle 5.11.0-1025.27~20.04.1 linux-image-5.11.0-1026-gcp 5.11.0-1026.29~20.04.1 linux-image-5.11.0-46-generic 5.11.0-46.51~20.04.1 linux-image-5.11.0-46-generic-64k 5.11.0-46.51~20.04.1 linux-image-5.11.0-46-generic-lpae 5.11.0-46.51~20.04.1 linux-image-5.11.0-46-lowlatency 5.11.0-46.51~20.04.1 linux-image-aws 5.11.0.1025.27~20.04.24 linux-image-azure 5.11.0.1025.27~20.04.24 linux-image-gcp 5.11.0.1026.29~20.04.25 linux-image-generic-64k-hwe-20.04 5.11.0.46.51~20.04.23 linux-image-generic-hwe-20.04 5.11.0.46.51~20.04.23 linux-image-generic-lpae-hwe-20.04 5.11.0.46.51~20.04.23 linux-image-lowlatency-hwe-20.04 5.11.0.46.51~20.04.23 linux-image-oem-20.04 5.10.0.1055.56 linux-image-oem-20.04b 5.10.0.1055.56 linux-image-oracle 5.11.0.1025.27~20.04.18 linux-image-virtual-hwe-20.04 5.11.0.46.51~20.04.23
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: ubuntu.com/security/notices/USN-5219-1 launchpad.net/bugs/1956585
Package Information: launchpad.net/ubuntu/+source/linux/5.13.0-25.26 launchpad.net/ubuntu/+source/linux-aws/5.13.0-1009.10 launchpad.net/ubuntu/+source/linux-azure/5.13.0-1010.11 launchpad.net/ubuntu/+source/linux-gcp/5.13.0-1010.12 launchpad.net/ubuntu/+source/linux-kvm/5.13.0-1008.8 launchpad.net/ubuntu/+source/linux-oracle/5.13.0-1013.16 launchpad.net/ubuntu/+source/linux-raspi/5.13.0-1013.15 launchpad.net/ubuntu/+source/linux/5.11.0-46.51 launchpad.net/ubuntu/+source/linux-aws/5.11.0-1025.27 launchpad.net/ubuntu/+source/linux-azure/5.11.0-1025.27 launchpad.net/ubuntu/+source/linux-gcp/5.11.0-1026.29 launchpad.net/ubuntu/+source/linux-kvm/5.11.0-1022.24 launchpad.net/ubuntu/+source/linux-oracle/5.11.0-1025.27 launchpad.net/ubuntu/+source/linux-raspi/5.11.0-1025.27 launchpad.net/ubuntu/+source/linux-aws-5.11/5.11.0-1025.27~20.04.1 launchpad.net/ubuntu/+source/linux-azure-5.11/5.11.0-1025.27~20.04.1 launchpad.net/ubuntu/+source/linux-gcp-5.11/5.11.0-1026.29~20.04.1 launchpad.net/ubuntu/+source/linux-hwe-5.11/5.11.0-46.51~20.04.1 launchpad.net/ubuntu/+source/linux-oem-5.10/5.10.0-1055.58 launchpad.net/ubuntu/+source/linux-oracle-5.11/5.11.0-1025.27~20.04.1