========================================================================== Ubuntu Security Notice USN-5729-2 November 18, 2022 linux-gcp-5.15, linux-gke-5.15, linux-intel-iotg, linux-raspi 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-intel-iotg: Linux kernel for Intel IoT platforms - linux-raspi: Linux kernel for Raspberry Pi systems - linux-gcp-5.15: Linux kernel for Google Cloud Platform (GCP) systems - linux-gke-5.15: Linux kernel for Google Container Engine (GKE) systems Details: It was discovered that a race condition existed in the instruction emulator of the Linux kernel on Arm 64-bit systems. A local attacker could use this to cause a denial of service (system crash). (CVE-2022-20422) Hsin-Wei Hung discovered that the BPF subsystem in the Linux kernel contained an out-of-bounds read vulnerability in the x86 JIT compiler. A local attacker could possibly use this to cause a denial of service (system crash) or expose sensitive information (kernel memory). (CVE-2022-2905) Hao Sun and Jiacheng Xu discovered that the NILFS file system 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-2022-2978) Abhishek Shah discovered a race condition in the PF_KEYv2 implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information (kernel memory). (CVE-2022-3028) It was discovered that the Netlink device interface implementation in the Linux kernel did not properly handle certain error conditions, leading to a use-after-free vulnerability with some network device drivers. A local attacker with admin access to the network device could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-3625) It was discovered that the IDT 77252 ATM PCI device driver in the Linux kernel did not properly remove any pending timers during device exit, resulting in a use-after-free vulnerability. A local attacker could possibly use this to cause a denial of service (system crash) or execute arbitrary code. (CVE-2022-3635) Gwangun Jung discovered that the netfilter subsystem in the Linux kernel did not properly prevent binding to an already bound chain. A local attacker could use this to cause a denial of service (system crash). (CVE-2022-39190) Xingyuan Mo and Gengjia Chen discovered that the Promise SuperTrak EX storage controller driver in the Linux kernel did not properly handle certain structures. A local attacker could potentially use this to expose sensitive information (kernel memory). (CVE-2022-40768) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 22.04 LTS: linux-image-5.15.0-1018-intel-iotg 5.15.0-1018.23 linux-image-5.15.0-1018-raspi 5.15.0-1018.20 linux-image-5.15.0-1018-raspi-nolpae 5.15.0-1018.20 linux-image-intel-iotg 5.15.0.1018.19 linux-image-raspi 5.15.0.1018.17 linux-image-raspi-nolpae 5.15.0.1018.17 Ubuntu 20.04 LTS: linux-image-5.15.0-1020-gke 5.15.0-1020.25~20.04.1 linux-image-5.15.0-1022-gcp 5.15.0-1022.29~20.04.1 linux-image-gcp 5.15.0.1022.29~20.04.1 linux-image-gke-5.15 5.15.0.1020.25~20.04.1 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-5729-2 https://ubuntu.com/security/notices/USN-5729-1 CVE-2022-20422, CVE-2022-2905, CVE-2022-2978, CVE-2022-3028, CVE-2022-3625, CVE-2022-3635, CVE-2022-39190, CVE-2022-40768 Package Information: https://launchpad.net/ubuntu/+source/linux-intel-iotg/5.15.0-1018.23 https://launchpad.net/ubuntu/+source/linux-raspi/5.15.0-1018.20 https://launchpad.net/ubuntu/+source/linux-gcp-5.15/5.15.0-1022.29~20.04.1 https://launchpad.net/ubuntu/+source/linux-gke-5.15/5.15.0-1020.25~20.04.1