========================================================================== Ubuntu Security Notice USN-6043-1 April 26, 2023 linux, linux-aws, linux-azure, linux-gcp, linux-hwe-5.19, linux-ibm, linux-kvm, linux-lowlatency, linux-oracle, linux-raspi vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 22.10 - Ubuntu 22.04 LTS Summary: Several security issues were fixed in the Linux kernel. 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-ibm: Linux kernel for IBM cloud systems - linux-kvm: Linux kernel for cloud environments - linux-lowlatency: Linux low latency kernel - linux-oracle: Linux kernel for Oracle Cloud systems - linux-raspi: Linux kernel for Raspberry Pi systems - linux-hwe-5.19: Linux hardware enablement (HWE) kernel Details: It was discovered that the Traffic-Control Index (TCINDEX) implementation in the Linux kernel did not properly perform filter deactivation in some situations. A local attacker could possibly use this to gain elevated privileges. Please note that with the fix for this CVE, kernel support for the TCINDEX classifier has been removed. (CVE-2023-1829) It was discovered that the OverlayFS implementation in the Linux kernel did not properly handle copy up operation in some conditions. A local attacker could possibly use this to gain elevated privileges. (CVE-2023-0386) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 22.10: linux-image-5.19.0-1017-raspi 5.19.0-1017.24 linux-image-5.19.0-1017-raspi-nolpae 5.19.0-1017.24 linux-image-5.19.0-1021-ibm 5.19.0-1021.23 linux-image-5.19.0-1022-gcp 5.19.0-1022.24 linux-image-5.19.0-1022-kvm 5.19.0-1022.23 linux-image-5.19.0-1022-oracle 5.19.0-1022.25 linux-image-5.19.0-1023-lowlatency 5.19.0-1023.24 linux-image-5.19.0-1023-lowlatency-64k 5.19.0-1023.24 linux-image-5.19.0-1024-aws 5.19.0-1024.25 linux-image-5.19.0-1025-azure 5.19.0-1025.28 linux-image-5.19.0-41-generic 5.19.0-41.42 linux-image-5.19.0-41-generic-64k 5.19.0-41.42 linux-image-5.19.0-41-generic-lpae 5.19.0-41.42 linux-image-aws 5.19.0.1024.21 linux-image-azure 5.19.0.1025.20 linux-image-gcp 5.19.0.1022.18 linux-image-generic 5.19.0.41.37 linux-image-generic-64k 5.19.0.41.37 linux-image-generic-lpae 5.19.0.41.37 linux-image-ibm 5.19.0.1021.18 linux-image-kvm 5.19.0.1022.19 linux-image-lowlatency 5.19.0.1023.19 linux-image-lowlatency-64k 5.19.0.1023.19 linux-image-oracle 5.19.0.1022.18 linux-image-raspi 5.19.0.1017.16 linux-image-raspi-nolpae 5.19.0.1017.16 linux-image-virtual 5.19.0.41.37 Ubuntu 22.04 LTS: linux-image-5.19.0-41-generic 5.19.0-41.42~22.04.1 linux-image-5.19.0-41-generic-64k 5.19.0-41.42~22.04.1 linux-image-5.19.0-41-generic-lpae 5.19.0-41.42~22.04.1 linux-image-generic-64k-hwe-22.04 5.19.0.41.42~22.04.14 linux-image-generic-hwe-22.04 5.19.0.41.42~22.04.14 linux-image-generic-lpae-hwe-22.04 5.19.0.41.42~22.04.14 linux-image-virtual-hwe-22.04 5.19.0.41.42~22.04.14 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-6043-1 CVE-2023-0386, CVE-2023-1829 Package Information: https://launchpad.net/ubuntu/+source/linux/5.19.0-41.42 https://launchpad.net/ubuntu/+source/linux-aws/5.19.0-1024.25 https://launchpad.net/ubuntu/+source/linux-azure/5.19.0-1025.28 https://launchpad.net/ubuntu/+source/linux-gcp/5.19.0-1022.24 https://launchpad.net/ubuntu/+source/linux-ibm/5.19.0-1021.23 https://launchpad.net/ubuntu/+source/linux-kvm/5.19.0-1022.23 https://launchpad.net/ubuntu/+source/linux-lowlatency/5.19.0-1023.24 https://launchpad.net/ubuntu/+source/linux-oracle/5.19.0-1022.25 https://launchpad.net/ubuntu/+source/linux-raspi/5.19.0-1017.24 https://launchpad.net/ubuntu/+source/linux-hwe-5.19/5.19.0-41.42~22.04.1