========================================================================== Ubuntu Security Notice USN-6626-1 February 08, 2024 linux, linux-aws, linux-aws-5.15, linux-gcp, linux-gcp-5.15, linux-gke, linux-gkeop, linux-gkeop-5.15, linux-hwe-5.15, linux-ibm, linux-ibm-5.15, linux-kvm, linux-lowlatency-hwe-5.15, linux-nvidia, linux-oracle, linux-oracle-5.15 vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 22.04 LTS - Ubuntu 20.04 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-gcp: Linux kernel for Google Cloud Platform (GCP) systems - linux-gke: Linux kernel for Google Container Engine (GKE) 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-nvidia: Linux kernel for NVIDIA systems - linux-oracle: Linux kernel for Oracle Cloud systems - linux-aws-5.15: Linux kernel for Amazon Web Services (AWS) systems - linux-gcp-5.15: Linux kernel for Google Cloud Platform (GCP) systems - linux-gkeop-5.15: Linux kernel for Google Container Engine (GKE) systems - linux-hwe-5.15: Linux hardware enablement (HWE) kernel - linux-ibm-5.15: Linux kernel for IBM cloud systems - linux-lowlatency-hwe-5.15: Linux low latency kernel - linux-oracle-5.15: Linux kernel for Oracle Cloud systems Details: Quentin Minster discovered that a race condition existed in the KSMBD implementation in the Linux kernel when handling sessions operations. A remote attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-32250, CVE-2023-32252, CVE-2023-32257) Marek Marczykowski-Górecki discovered that the Xen event channel infrastructure implementation in the Linux kernel contained a race condition. An attacker in a guest VM could possibly use this to cause a denial of service (paravirtualized device unavailability). (CVE-2023-34324) Zheng Wang discovered a use-after-free in the Renesas Ethernet AVB driver in the Linux kernel during device removal. A privileged attacker could use this to cause a denial of service (system crash). (CVE-2023-35827) Tom Dohrmann discovered that the Secure Encrypted Virtualization (SEV) implementation for AMD processors in the Linux kernel contained a race condition when accessing MMIO registers. A local attacker in a SEV guest VM could possibly use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-46813) It was discovered that the Microchip USB Ethernet driver in the Linux kernel contained a race condition during device removal, leading to a use- after-free vulnerability. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2023-6039) It was discovered that the TLS subsystem in the Linux kernel did not properly perform cryptographic operations in some situations, leading to a null pointer dereference vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-6176) Xingyuan Mo discovered that the netfilter subsystem in the Linux kernel did not properly handle dynset expressions passed from userspace, leading to a null pointer dereference vulnerability. A local attacker could use this to cause a denial of service (system crash). (CVE-2023-6622) It was discovered that the TIPC protocol implementation in the Linux kernel did not properly handle locking during tipc_crypto_key_revoke() operations. A local attacker could use this to cause a denial of service (kernel deadlock). (CVE-2024-0641) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 22.04 LTS: linux-image-5.15.0-1036-gkeop 5.15.0-1036.42 linux-image-5.15.0-1044-nvidia 5.15.0-1044.44 linux-image-5.15.0-1044-nvidia-lowlatency 5.15.0-1044.44 linux-image-5.15.0-1046-ibm 5.15.0-1046.49 linux-image-5.15.0-1050-gke 5.15.0-1050.55 linux-image-5.15.0-1050-kvm 5.15.0-1050.55 linux-image-5.15.0-1051-gcp 5.15.0-1051.59 linux-image-5.15.0-1051-oracle 5.15.0-1051.57 linux-image-5.15.0-1053-aws 5.15.0-1053.58 linux-image-5.15.0-94-generic 5.15.0-94.104 linux-image-5.15.0-94-generic-64k 5.15.0-94.104 linux-image-5.15.0-94-generic-lpae 5.15.0-94.104 linux-image-aws-lts-22.04 5.15.0.1053.52 linux-image-gcp-lts-22.04 5.15.0.1051.47 linux-image-generic 5.15.0.94.91 linux-image-generic-64k 5.15.0.94.91 linux-image-generic-lpae 5.15.0.94.91 linux-image-gke 5.15.0.1050.49 linux-image-gke-5.15 5.15.0.1050.49 linux-image-gkeop 5.15.0.1036.35 linux-image-gkeop-5.15 5.15.0.1036.35 linux-image-ibm 5.15.0.1046.42 linux-image-kvm 5.15.0.1050.46 linux-image-nvidia 5.15.0.1044.44 linux-image-nvidia-lowlatency 5.15.0.1044.44 linux-image-oracle 5.15.0.1051.46 linux-image-oracle-lts-22.04 5.15.0.1051.46 linux-image-virtual 5.15.0.94.91 Ubuntu 20.04 LTS: linux-image-5.15.0-1036-gkeop 5.15.0-1036.42~20.04.1 linux-image-5.15.0-1046-ibm 5.15.0-1046.49~20.04.1 linux-image-5.15.0-1051-gcp 5.15.0-1051.59~20.04.1 linux-image-5.15.0-1051-oracle 5.15.0-1051.57~20.04.1 linux-image-5.15.0-1053-aws 5.15.0-1053.58~20.04.1 linux-image-5.15.0-94-generic 5.15.0-94.104~20.04.1 linux-image-5.15.0-94-generic-64k 5.15.0-94.104~20.04.1 linux-image-5.15.0-94-generic-lpae 5.15.0-94.104~20.04.1 linux-image-5.15.0-94-lowlatency 5.15.0-94.104~20.04.1 linux-image-5.15.0-94-lowlatency-64k 5.15.0-94.104~20.04.1 linux-image-aws 5.15.0.1053.58~20.04.41 linux-image-gcp 5.15.0.1051.59~20.04.1 linux-image-generic-64k-hwe-20.04 5.15.0.94.104~20.04.50 linux-image-generic-hwe-20.04 5.15.0.94.104~20.04.50 linux-image-generic-lpae-hwe-20.04 5.15.0.94.104~20.04.50 linux-image-gkeop-5.15 5.15.0.1036.42~20.04.32 linux-image-ibm 5.15.0.1046.49~20.04.18 linux-image-lowlatency-64k-hwe-20.04 5.15.0.94.104~20.04.47 linux-image-lowlatency-hwe-20.04 5.15.0.94.104~20.04.47 linux-image-oem-20.04 5.15.0.94.104~20.04.50 linux-image-oem-20.04b 5.15.0.94.104~20.04.50 linux-image-oem-20.04c 5.15.0.94.104~20.04.50 linux-image-oem-20.04d 5.15.0.94.104~20.04.50 linux-image-oracle 5.15.0.1051.57~20.04.1 linux-image-virtual-hwe-20.04 5.15.0.94.104~20.04.50 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-6626-1 CVE-2023-32250, CVE-2023-32252, CVE-2023-32257, CVE-2023-34324, CVE-2023-35827, CVE-2023-46813, CVE-2023-6039, CVE-2023-6176, CVE-2023-6622, CVE-2024-0641 Package Information: https://launchpad.net/ubuntu/+source/linux/5.15.0-94.104 https://launchpad.net/ubuntu/+source/linux-aws/5.15.0-1053.58 https://launchpad.net/ubuntu/+source/linux-gcp/5.15.0-1051.59 https://launchpad.net/ubuntu/+source/linux-gke/5.15.0-1050.55 https://launchpad.net/ubuntu/+source/linux-gkeop/5.15.0-1036.42 https://launchpad.net/ubuntu/+source/linux-ibm/5.15.0-1046.49 https://launchpad.net/ubuntu/+source/linux-kvm/5.15.0-1050.55 https://launchpad.net/ubuntu/+source/linux-nvidia/5.15.0-1044.44 https://launchpad.net/ubuntu/+source/linux-oracle/5.15.0-1051.57 https://launchpad.net/ubuntu/+source/linux-aws-5.15/5.15.0-1053.58~20.04.1 https://launchpad.net/ubuntu/+source/linux-gcp-5.15/5.15.0-1051.59~20.04.1 https://launchpad.net/ubuntu/+source/linux-gkeop-5.15/5.15.0-1036.42~20.04.1 https://launchpad.net/ubuntu/+source/linux-hwe-5.15/5.15.0-94.104~20.04.1 https://launchpad.net/ubuntu/+source/linux-ibm-5.15/5.15.0-1046.49~20.04.1 https://launchpad.net/ubuntu/+source/linux-lowlatency-hwe-5.15/5.15.0-94.104~20.04.1 https://launchpad.net/ubuntu/+source/linux-oracle-5.15/5.15.0-1051.57~20.04.1