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Ubuntu 22.04 LTS USN-5469-1 Critical: Kernel Issues Exploitable

Several security issues were fixed in the Linux kernel.. =========================================================================Ubuntu Security Notice USN-5469-1 June 08, 2022 linux, linux-aws, linux-azure, linux-gcp, linux-gke, linux-ibm, linux-intel-iotg, linux-kvm, linux-lowlatency, linux-oracle, linux-raspi vulnerabilities ========================================================================= A security issue affects these releases of Ubuntu and its derivatives: - 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-gke: Linux kernel for Google Container Engine (GKE) systems - linux-ibm: Linux kernel for IBM cloud systems - linux-intel-iotg: Linux kernel for Intel IoT platforms - 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 Details: It was discovered that the Linux kernel did not properly restrict access to the kernel debugger when booted in secure boot environments. A privileged attacker could use this to bypass UEFI Secure Boot restrictions. (CVE-2022-21499) Aaron Adams discovered that the netfilter subsystem in the Linux kernel did not properly handle the removal of stateful expressions 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 execute arbitrary code. (CVE-2022-1966) Billy Jheng Bing Jhong discovered that the CIFS network file system implementation in the Linux kernel did not properly validate arguments to ioctl() in some situations. A local attacker could possibly use this to cause a denial of service (system crash).(CVE-2022-0168) Hu Jiahui discovered that multiple race conditions existed in the Advanced Linux Sound Architecture (ALSA) framework, leading to use-after-free vulnerabilities. A local attacker could use these to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-1048) Qiuhao Li, Gaoning Pan and Yongkang Jia discovered that the KVM implementation in the Linux kernel did not properly perform guest page table updates in some situations. An attacker in a guest vm could possibly use this to crash the host OS. (CVE-2022-1158) It was discovered that the implementation of the 6pack and mkiss protocols in the Linux kernel did not handle detach events properly in some situations, leading to a use-after-free vulnerability. A local attacker could possibly use this to cause a denial of service (system crash). (CVE-2022-1195) Duoming Zhou discovered that the 6pack protocol implementation in the Linux kernel did not handle detach events properly in some situations, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash). (CVE-2022-1198) Duoming Zhou discovered that the AX.25 amateur radio protocol implementation in the Linux kernel did not handle detach events properly in some situations. A local attacker could possibly use this to cause a denial of service (system crash) or execute arbitrary code. (CVE-2022-1199) Duoming Zhou discovered race conditions in the AX.25 amateur radio protocol implementation in the Linux kernel during device detach operations. A local attacker could possibly use this to cause a denial of service (system crash). (CVE-2022-1204) Duoming Zhou discovered race conditions in the AX.25 amateur radio protocol implementation in the Linux kernel, leading to use-after-free vulnerabilities. A local attacker could possibly use this to cause a denial of service (system crash). (CVE-2022-1205) Qiuhao Li, Gaoning Pan, and Yongkang Jia discovered that thekvm implementation in the Linux kernel did not handle releasing a virtual cpu properly. A local attacker in a guest VM coud possibly use this to cause a denial of service (host system crash). (CVE-2022-1263) It was discovered that the PF_KEYv2 implementation in the Linux kernel did not properly initialize kernel memory in some situations. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2022-1353) It was discovered that the implementation of X.25 network protocols in the Linux kernel did not terminate link layer sessions properly. A local attacker could possibly use this to cause a denial of service (system crash). (CVE-2022-1516) It was discovered that the ACRN Hypervisor Service Module implementation in the Linux kernel did not properly deallocate memory in some situations. A local privileged attacker could possibly use this to cause a denial of service (memory exhaustion). (CVE-2022-1651) It was discovered that the RxRPC session socket implementation in the Linux kernel did not properly handle ioctls called when no security protocol is given. A local attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information (kernel memory). (CVE-2022-1671) Ziming Zhang discovered that the netfilter subsystem in the Linux kernel did not properly validate sets with multiple ranged fields. A local attacker could use this to cause a denial of service or execute arbitrary code. (CVE-2022-1972) 赵子轩 discovered that the 802.2 LLC type 2 driver in the Linux kernel did not properly perform reference counting in some error conditions. A local attacker could use this to cause a denial of service. (CVE-2022-28356) It was discovered that the 8 Devices USB2CAN interface implementation in the Linux kernel did not properly handle certain error conditions, leading to a double-free. A local attacker could possibly use this to cause a denial of service (system crash). (CVE-2022-28388) It was discoveredthat the Microchip CAN BUS Analyzer interface implementation in the Linux kernel did not properly handle certain error conditions, leading to a double-free. A local attacker could possibly use this to cause a denial of service (system crash). (CVE-2022-28389) It was discovered that the EMS CAN/USB interface implementation in the Linux kernel contained a double-free vulnerability when handling certain error conditions. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2022-28390) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 22.04 LTS: linux-image-5.15.0-1007-ibm 5.15.0-1007.8 linux-image-5.15.0-1008-gcp 5.15.0-1008.12 linux-image-5.15.0-1008-gke 5.15.0-1008.10 linux-image-5.15.0-1008-intel-iotg 5.15.0-1008.11 linux-image-5.15.0-1009-oracle 5.15.0-1009.12 linux-image-5.15.0-1010-azure 5.15.0-1010.12 linux-image-5.15.0-1010-kvm 5.15.0-1010.11 linux-image-5.15.0-1011-aws 5.15.0-1011.14 linux-image-5.15.0-1011-raspi 5.15.0-1011.13 linux-image-5.15.0-1011-raspi-nolpae 5.15.0-1011.13 linux-image-5.15.0-37-generic 5.15.0-37.39 linux-image-5.15.0-37-generic-64k 5.15.0-37.39 linux-image-5.15.0-37-generic-lpae 5.15.0-37.39 linux-image-5.15.0-37-lowlatency 5.15.0-37.39 linux-image-5.15.0-37-lowlatency-64k 5.15.0-37.39 linux-image-aws 5.15.0.1011.12 linux-image-azure 5.15.0.1010.10 linux-image-gcp 5.15.0.1008.8 linux-image-generic 5.15.0.37.39 linux-image-generic-64k 5.15.0.37.39 linux-image-generic-hwe-22.04 5.15.0.37.39 linux-image-generic-lpae 5.15.0.37.39 linux-image-generic-lpae-hwe-22.04 5.15.0.37.39 linux-image-gke 5.15.0.1008.12 linux-image-gke-5.15 5.15.0.1008.12 linux-image-ibm 5.15.0.1007.7 linux-image-intel-iotg 5.15.0.1008.9 linux-image-kvm 5.15.0.1010.9 linux-image-lowlatency 5.15.0.37.37 linux-image-lowlatency-64k 5.15.0.37.37 linux-image-lowlatency-64k-hwe-22.04 5.15.0.37.37 linux-image-lowlatency-hwe-22.04 5.15.0.37.37 linux-image-oem-20.04 5.15.0.37.39 linux-image-oracle 5.15.0.1009.8 linux-image-raspi 5.15.0.1011.10 linux-image-raspi-nolpae 5.15.0.1011.10 linux-image-virtual 5.15.0.37.39 linux-image-virtual-hwe-22.04 5.15.0.37.39 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-5469-1 CVE-2022-0168, CVE-2022-1048, CVE-2022-1158, CVE-2022-1195, CVE-2022-1198, CVE-2022-1199, CVE-2022-1204, CVE-2022-1205, CVE-2022-1263, CVE-2022-1353, CVE-2022-1516, CVE-2022-1651, CVE-2022-1671, CVE-2022-1966, CVE-2022-1972, CVE-2022-21499, CVE-2022-28356, CVE-2022-28388, CVE-2022-28389, CVE-2022-28390 Package Information: https://launchpad.net/ubuntu/+source/linux/5.15.0-37.39 https://launchpad.net/ubuntu/+source/linux-aws/5.15.0-1011.14 https://launchpad.net/ubuntu/+source/linux-azure/5.15.0-1010.12 https://launchpad.net/ubuntu/+source/linux-gcp/5.15.0-1008.12 https://launchpad.net/ubuntu/+source/linux-gke/5.15.0-1008.10 https://launchpad.net/ubuntu/+source/linux-ibm/5.15.0-1007.8 https://launchpad.net/ubuntu/+source/linux-intel-iotg/5.15.0-1008.11 https://launchpad.net/ubuntu/+source/linux-kvm/5.15.0-1010.11 https://launchpad.net/ubuntu/+source/linux-lowlatency/5.15.0-37.39 https://launchpad.net/ubuntu/+source/linux-oracle/5.15.0-1009.12 https://launchpad.net/ubuntu/+source/linux-raspi/5.15.0-1011.13 . A variety of vulnerabilities were addressed in the Linux kernel impacting various Ubuntu editions.. Linux Kernel Security, Ubuntu Kernel Update, Kernel Bugs Fix. . Severity: Critical. LinuxSecurity.com Team

Jun 08, 2022 •Critical Ubuntu