========================================================================== Ubuntu Security Notice USN-6726-1 April 09, 2024 linux, linux-aws, linux-aws-5.4, linux-azure, linux-azure-5.4, linux-bluefield, linux-gcp, linux-gcp-5.4, linux-gkeop, linux-hwe-5.4, linux-ibm, linux-ibm-5.4, linux-kvm, linux-oracle, linux-oracle-5.4, linux-raspi, linux-raspi-5.4 vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 20.04 LTS - Ubuntu 18.04 LTS (Available with Ubuntu Pro) 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-bluefield: Linux kernel for NVIDIA BlueField platforms - linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems - linux-gkeop: Linux kernel for Google Container Engine (GKE) systems - linux-ibm: Linux kernel for IBM cloud 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-5.4: Linux kernel for Amazon Web Services (AWS) systems - linux-azure-5.4: Linux kernel for Microsoft Azure cloud systems - linux-gcp-5.4: Linux kernel for Google Cloud Platform (GCP) systems - linux-hwe-5.4: Linux hardware enablement (HWE) kernel - linux-ibm-5.4: Linux kernel for IBM cloud systems - linux-oracle-5.4: Linux kernel for Oracle Cloud systems - linux-raspi-5.4: Linux kernel for Raspberry Pi systems Details: Pratyush Yadav discovered that the Xen network backend implementation in the Linux kernel did not properly handle zero length data request, leading to a null pointer dereference vulnerability. An attacker in a guest VM could possibly use this to cause a denial of service (host domain crash). (CVE-2023-46838) It was discovered that the IPv6 implementation of the Linux kernel did not properly manage route cache memory usage. A remote attacker could use this to cause a denial of service (memory exhaustion). (CVE-2023-52340) It was discovered that the device mapper driver in the Linux kernel did not properly validate target size during certain memory allocations. A local attacker could use this to cause a denial of service (system crash). (CVE-2023-52429, CVE-2024-23851) Dan Carpenter discovered that the netfilter subsystem in the Linux kernel did not store data in properly sized memory locations. A local user could use this to cause a denial of service (system crash). (CVE-2024-0607) Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - Architecture specifics; - Cryptographic API; - Android drivers; - EDAC drivers; - GPU drivers; - Media drivers; - MTD block device drivers; - Network drivers; - NVME drivers; - TTY drivers; - Userspace I/O drivers; - F2FS file system; - GFS2 file system; - IPv6 Networking; - AppArmor security module; (CVE-2023-52464, CVE-2023-52448, CVE-2023-52457, CVE-2023-52443, CVE-2023-52439, CVE-2023-52612, CVE-2024-26633, CVE-2024-26597, CVE-2023-52449, CVE-2023-52444, CVE-2023-52609, CVE-2023-52469, CVE-2023-52445, CVE-2023-52451, CVE-2023-52470, CVE-2023-52454, CVE-2023-52436, CVE-2023-52438) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 20.04 LTS: linux-image-5.4.0-1069-ibm 5.4.0-1069.74 linux-image-5.4.0-1082-bluefield 5.4.0-1082.89 linux-image-5.4.0-1089-gkeop 5.4.0-1089.93 linux-image-5.4.0-1106-raspi 5.4.0-1106.118 linux-image-5.4.0-1110-kvm 5.4.0-1110.117 linux-image-5.4.0-1121-oracle 5.4.0-1121.130 linux-image-5.4.0-1122-aws 5.4.0-1122.132 linux-image-5.4.0-1126-gcp 5.4.0-1126.135 linux-image-5.4.0-1127-azure 5.4.0-1127.134 linux-image-5.4.0-176-generic 5.4.0-176.196 linux-image-5.4.0-176-generic-lpae 5.4.0-176.196 linux-image-5.4.0-176-lowlatency 5.4.0-176.196 linux-image-aws-lts-20.04 5.4.0.1122.119 linux-image-azure-lts-20.04 5.4.0.1127.121 linux-image-bluefield 5.4.0.1082.78 linux-image-gcp-lts-20.04 5.4.0.1126.128 linux-image-generic 5.4.0.176.174 linux-image-generic-lpae 5.4.0.176.174 linux-image-gkeop 5.4.0.1089.87 linux-image-gkeop-5.4 5.4.0.1089.87 linux-image-ibm-lts-20.04 5.4.0.1069.98 linux-image-kvm 5.4.0.1110.106 linux-image-lowlatency 5.4.0.176.174 linux-image-oem 5.4.0.176.174 linux-image-oem-osp1 5.4.0.176.174 linux-image-oracle-lts-20.04 5.4.0.1121.114 linux-image-raspi 5.4.0.1106.136 linux-image-raspi2 5.4.0.1106.136 linux-image-virtual 5.4.0.176.174 Ubuntu 18.04 LTS (Available with Ubuntu Pro): linux-image-5.4.0-1069-ibm 5.4.0-1069.74~18.04.1 linux-image-5.4.0-1106-raspi 5.4.0-1106.118~18.04.1 linux-image-5.4.0-1121-oracle 5.4.0-1121.130~18.04.1 linux-image-5.4.0-1122-aws 5.4.0-1122.132~18.04.1 linux-image-5.4.0-1126-gcp 5.4.0-1126.135~18.04.1 linux-image-5.4.0-1127-azure 5.4.0-1127.134~18.04.1 linux-image-5.4.0-175-generic 5.4.0-175.195~18.04.1 linux-image-5.4.0-175-lowlatency 5.4.0-175.195~18.04.1 linux-image-aws 5.4.0.1122.132~18.04.1 linux-image-azure 5.4.0.1127.134~18.04.1 linux-image-gcp 5.4.0.1126.135~18.04.1 linux-image-generic-hwe-18.04 5.4.0.175.195~18.04.1 linux-image-ibm 5.4.0.1069.79 linux-image-lowlatency-hwe-18.04 5.4.0.175.195~18.04.1 linux-image-oem 5.4.0.175.195~18.04.1 linux-image-oem-osp1 5.4.0.175.195~18.04.1 linux-image-oracle 5.4.0.1121.130~18.04.1 linux-image-raspi-hwe-18.04 5.4.0.1106.103 linux-image-snapdragon-hwe-18.04 5.4.0.175.195~18.04.1 linux-image-virtual-hwe-18.04 5.4.0.175.195~18.04.1 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-6726-1 CVE-2023-46838, CVE-2023-52340, CVE-2023-52429, CVE-2023-52436, CVE-2023-52438, CVE-2023-52439, CVE-2023-52443, CVE-2023-52444, CVE-2023-52445, CVE-2023-52448, CVE-2023-52449, CVE-2023-52451, CVE-2023-52454, CVE-2023-52457, CVE-2023-52464, CVE-2023-52469, CVE-2023-52470, CVE-2023-52609, CVE-2023-52612, CVE-2024-0607, CVE-2024-23851, CVE-2024-26597, CVE-2024-26633 Package Information: https://launchpad.net/ubuntu/+source/linux/5.4.0-176.196 https://launchpad.net/ubuntu/+source/linux-aws/5.4.0-1122.132 https://launchpad.net/ubuntu/+source/linux-azure/5.4.0-1127.134 https://launchpad.net/ubuntu/+source/linux-bluefield/5.4.0-1082.89 https://launchpad.net/ubuntu/+source/linux-gcp/5.4.0-1126.135 https://launchpad.net/ubuntu/+source/linux-gkeop/5.4.0-1089.93 https://launchpad.net/ubuntu/+source/linux-ibm/5.4.0-1069.74 https://launchpad.net/ubuntu/+source/linux-kvm/5.4.0-1110.117 https://launchpad.net/ubuntu/+source/linux-oracle/5.4.0-1121.130 https://launchpad.net/ubuntu/+source/linux-raspi/5.4.0-1106.118