========================================================================== Ubuntu Security Notice USN-6024-1 April 19, 2023 linux, linux-aws, linux-azure, linux-gcp, linux-hwe-5.19, 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-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 contained a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-1281) Lin Ma discovered a race condition in the io_uring subsystem in the Linux kernel, leading to a null pointer dereference vulnerability. A local attacker could use this to cause a denial of service (system crash). (CVE-2023-0468) It was discovered that a use-after-free vulnerability existed in the SGI GRU driver in the Linux kernel. A local attacker could possibly use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-3424) Hyunwoo Kim discovered that the DVB Core driver in the Linux kernel did not properly perform reference counting in some situations, leading to a use- after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-41218) It was discovered that the network queuing discipline implementation in the Linux kernel contained a null pointer dereference in some situations. A local attacker could use this to cause a denial of service (system crash). (CVE-2022-47929) Thadeu Cascardo discovered that the io_uring subsystem contained a double- free vulnerability in certain memory allocation error conditions. A local attacker could possibly use this to cause a denial of service (system crash). (CVE-2023-1032) It was discovered that the module decompression implementation in the Linux kernel did not properly handle return values in certain error conditions. A local attacker could use this to cause a denial of service (system crash). (CVE-2023-22997) Lianhui Tang discovered that the MPLS implementation in the Linux kernel did not properly handle certain sysctl allocation failure conditions, leading to a double-free vulnerability. An attacker could use this to cause a denial of service or possibly execute arbitrary code. (CVE-2023-26545) It was discovered that the NTFS file system implementation in the Linux kernel did not properly handle a loop termination condition, leading to an out-of-bounds read vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information. (CVE-2023-26606) Wei Chen discovered that the DVB USB AZ6027 driver in the Linux kernel contained a null pointer dereference when handling certain messages from user space. A local attacker could use this to cause a denial of service (system crash). (CVE-2023-28328) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 22.10: linux-image-5.19.0-1016-raspi 5.19.0-1016.23 linux-image-5.19.0-1016-raspi-nolpae 5.19.0-1016.23 linux-image-5.19.0-1020-gcp 5.19.0-1020.22 linux-image-5.19.0-1020-oracle 5.19.0-1020.23 linux-image-5.19.0-1021-kvm 5.19.0-1021.22 linux-image-5.19.0-1022-lowlatency 5.19.0-1022.23 linux-image-5.19.0-1022-lowlatency-64k 5.19.0-1022.23 linux-image-5.19.0-1023-aws 5.19.0-1023.24 linux-image-5.19.0-1023-azure 5.19.0-1023.24 linux-image-5.19.0-40-generic 5.19.0-40.41 linux-image-5.19.0-40-generic-64k 5.19.0-40.41 linux-image-5.19.0-40-generic-lpae 5.19.0-40.41 linux-image-aws 5.19.0.1023.20 linux-image-azure 5.19.0.1023.19 linux-image-gcp 5.19.0.1020.17 linux-image-generic 5.19.0.40.36 linux-image-generic-64k 5.19.0.40.36 linux-image-generic-lpae 5.19.0.40.36 linux-image-kvm 5.19.0.1021.18 linux-image-lowlatency 5.19.0.1022.18 linux-image-lowlatency-64k 5.19.0.1022.18 linux-image-oracle 5.19.0.1020.17 linux-image-raspi 5.19.0.1016.15 linux-image-raspi-nolpae 5.19.0.1016.15 linux-image-virtual 5.19.0.40.36 Ubuntu 22.04 LTS: linux-image-5.19.0-40-generic 5.19.0-40.41~22.04.1 linux-image-5.19.0-40-generic-64k 5.19.0-40.41~22.04.1 linux-image-5.19.0-40-generic-lpae 5.19.0-40.41~22.04.1 linux-image-generic-64k-hwe-22.04 5.19.0.40.41~22.04.13 linux-image-generic-hwe-22.04 5.19.0.40.41~22.04.13 linux-image-generic-lpae-hwe-22.04 5.19.0.40.41~22.04.13 linux-image-virtual-hwe-22.04 5.19.0.40.41~22.04.13 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-6024-1 CVE-2022-3424, CVE-2022-41218, CVE-2022-47929, CVE-2023-0468, CVE-2023-1032, CVE-2023-1281, CVE-2023-22997, CVE-2023-26545, CVE-2023-26606, CVE-2023-28328 Package Information: https://launchpad.net/ubuntu/+source/linux/5.19.0-40.41 https://launchpad.net/ubuntu/+source/linux-aws/5.19.0-1023.24 https://launchpad.net/ubuntu/+source/linux-azure/5.19.0-1023.24 https://launchpad.net/ubuntu/+source/linux-gcp/5.19.0-1020.22 https://launchpad.net/ubuntu/+source/linux-kvm/5.19.0-1021.22 https://launchpad.net/ubuntu/+source/linux-lowlatency/5.19.0-1022.23 https://launchpad.net/ubuntu/+source/linux-oracle/5.19.0-1020.23 https://launchpad.net/ubuntu/+source/linux-raspi/5.19.0-1016.23 https://launchpad.net/ubuntu/+source/linux-hwe-5.19/5.19.0-40.41~22.04.1