========================================================================== Ubuntu Security Notice USN-5727-1 November 16, 2022
linux, linux-aws, linux-aws-hwe, linux-dell300x, linux-hwe, linux-kvm, linux-oracle, linux-raspi2, linux-snapdragon vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 18.04 LTS - Ubuntu 16.04 ESM 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-dell300x: Linux kernel for Dell 300x platforms - linux-kvm: Linux kernel for cloud environments - linux-oracle: Linux kernel for Oracle Cloud systems - linux-raspi2: Linux kernel for Raspberry Pi systems - linux-snapdragon: Linux kernel for Qualcomm Snapdragon processors - linux-aws-hwe: Linux kernel for Amazon Web Services (AWS-HWE) systems - linux-hwe: Linux hardware enablement (HWE) kernel 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) It was discovered that the KVM implementation in the Linux kernel did not properly handle virtual CPUs without APICs in certain situations. A local attacker could possibly use this to cause a denial of service (host system crash). (CVE-2022-2153) 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 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) It was discovered that the Netlink Transformation (XFRM) subsystem in the Linux kernel contained a reference counting error. A local attacker could use this to cause a denial of service (system crash). (CVE-2022-36879) 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 18.04 LTS: linux-image-4.15.0-1055-dell300x 4.15.0-1055.60 linux-image-4.15.0-1108-oracle 4.15.0-1108.119 linux-image-4.15.0-1121-raspi2 4.15.0-1121.129 linux-image-4.15.0-1129-kvm 4.15.0-1129.134 linux-image-4.15.0-1139-snapdragon 4.15.0-1139.149 linux-image-4.15.0-1143-aws 4.15.0-1143.155 linux-image-4.15.0-197-generic 4.15.0-197.208 linux-image-4.15.0-197-generic-lpae 4.15.0-197.208 linux-image-4.15.0-197-lowlatency 4.15.0-197.208 linux-image-aws-lts-18.04 4.15.0.1143.143 linux-image-dell300x 4.15.0.1055.55 linux-image-generic 4.15.0.197.182 linux-image-generic-lpae 4.15.0.197.182 linux-image-kvm 4.15.0.1129.122 linux-image-lowlatency 4.15.0.197.182 linux-image-oracle-lts-18.04 4.15.0.1108.115 linux-image-raspi2 4.15.0.1121.118 linux-image-snapdragon 4.15.0.1139.140 linux-image-virtual 4.15.0.197.182 Ubuntu 16.04 ESM: linux-image-4.15.0-1108-oracle 4.15.0-1108.119~16.04.1 linux-image-4.15.0-1143-aws-hwe 4.15.0-1143.155~16.04.1 linux-image-4.15.0-197-generic 4.15.0-197.208~16.04.1 linux-image-4.15.0-197-lowlatency 4.15.0-197.208~16.04.1 linux-image-aws-hwe 4.15.0.1143.130 linux-image-generic-hwe-16.04 4.15.0.197.184 linux-image-lowlatency-hwe-16.04 4.15.0.197.184 linux-image-oem 4.15.0.197.184 linux-image-oracle 4.15.0.1108.92 linux-image-virtual-hwe-16.04 4.15.0.197.184 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-5727-1 CVE-2022-20422, CVE-2022-2153, CVE-2022-2978, CVE-2022-3028, CVE-2022-3635, CVE-2022-36879, CVE-2022-40768 Package Information: https://launchpad.net/ubuntu/+source/linux/4.15.0-197.208 https://launchpad.net/ubuntu/+source/linux-aws/4.15.0-1143.155 https://launchpad.net/ubuntu/+source/linux-dell300x/4.15.0-1055.60 https://launchpad.net/ubuntu/+source/linux-kvm/4.15.0-1129.134 https://launchpad.net/ubuntu/+source/linux-oracle/4.15.0-1108.119 https://launchpad.net/ubuntu/+source/linux-raspi2/4.15.0-1121.129 https://launchpad.net/ubuntu/+source/linux-snapdragon/4.15.0-1139.149
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