[USN-5514-1] Linux kernel vulnerabilities


========================================================================== Ubuntu Security Notice USN-5514-1 July 13, 2022
linux, linux-aws, linux-azure, linux-azure-5.4, linux-azure-fde, linux-gke, linux-gkeop, linux-hwe-5.4, linux-ibm, linux-kvm vulnerabilities ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 20.04 LTS – Ubuntu 18.04 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-azure-fde: Linux kernel for Microsoft Azure cloud 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-azure-5.4: Linux kernel for Microsoft Azure cloud systems – linux-hwe-5.4: Linux hardware enablement (HWE) kernel
Details:
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 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)
Yongkang Jia discovered that the KVM hypervisor implementation in the Linux kernel did not properly handle guest TLB mapping invalidation requests in some situations. An attacker in a guest VM could use this to cause a denial of service in the host OS (system crash). (CVE-2022-1789)
Minh Yuan discovered that the floppy driver in the Linux kernel contained a race condition 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 possibly execute arbitrary code. (CVE-2022-33981)
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 20.04 LTS: linux-image-5.4.0-1029-ibm 5.4.0-1029.33 linux-image-5.4.0-1049-gkeop 5.4.0-1049.52 linux-image-5.4.0-1071-kvm 5.4.0-1071.76 linux-image-5.4.0-1078-gke 5.4.0-1078.84 linux-image-5.4.0-1081-aws 5.4.0-1081.88 linux-image-5.4.0-1086-azure 5.4.0-1086.91 linux-image-5.4.0-1086-azure-fde 5.4.0-1086.91+cvm1.1 linux-image-5.4.0-122-generic 5.4.0-122.138 linux-image-5.4.0-122-generic-lpae 5.4.0-122.138 linux-image-5.4.0-122-lowlatency 5.4.0-122.138 linux-image-aws-lts-20.04 5.4.0.1081.81 linux-image-azure-fde 5.4.0.1086.91+cvm1.27 linux-image-azure-lts-20.04 5.4.0.1086.83 linux-image-generic 5.4.0.122.123 linux-image-generic-lpae 5.4.0.122.123 linux-image-gke 5.4.0.1078.86 linux-image-gke-5.4 5.4.0.1078.86 linux-image-gkeop 5.4.0.1049.50 linux-image-gkeop-5.4 5.4.0.1049.50 linux-image-ibm 5.4.0.1029.58 linux-image-ibm-lts-20.04 5.4.0.1029.58 linux-image-kvm 5.4.0.1071.68 linux-image-lowlatency 5.4.0.122.123 linux-image-oem 5.4.0.122.123 linux-image-oem-osp1 5.4.0.122.123 linux-image-virtual 5.4.0.122.123
Ubuntu 18.04 LTS: linux-image-5.4.0-1086-azure 5.4.0-1086.91~18.04.1 linux-image-5.4.0-122-generic 5.4.0-122.138~18.04.1 linux-image-5.4.0-122-generic-lpae 5.4.0-122.138~18.04.1 linux-image-5.4.0-122-lowlatency 5.4.0-122.138~18.04.1 linux-image-azure 5.4.0.1086.63 linux-image-generic-hwe-18.04 5.4.0.122.138~18.04.102 linux-image-generic-lpae-hwe-18.04 5.4.0.122.138~18.04.102 linux-image-lowlatency-hwe-18.04 5.4.0.122.138~18.04.102 linux-image-oem 5.4.0.122.138~18.04.102 linux-image-oem-osp1 5.4.0.122.138~18.04.102 linux-image-snapdragon-hwe-18.04 5.4.0.122.138~18.04.102 linux-image-virtual-hwe-18.04 5.4.0.122.138~18.04.102
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: ubuntu.com/security/notices/USN-5514-1 CVE-2022-1195, CVE-2022-1199, CVE-2022-1204, CVE-2022-1205, CVE-2022-1789, CVE-2022-33981
Package Information: launchpad.net/ubuntu/+source/linux/5.4.0-122.138 launchpad.net/ubuntu/+source/linux-aws/5.4.0-1081.88 launchpad.net/ubuntu/+source/linux-azure/5.4.0-1086.91 launchpad.net/ubuntu/+source/linux-azure-fde/5.4.0-1086.91+cvm1.1 launchpad.net/ubuntu/+source/linux-gke/5.4.0-1078.84 launchpad.net/ubuntu/+source/linux-gkeop/5.4.0-1049.52 launchpad.net/ubuntu/+source/linux-ibm/5.4.0-1029.33 launchpad.net/ubuntu/+source/linux-kvm/5.4.0-1071.76 launchpad.net/ubuntu/+source/linux-azure-5.4/5.4.0-1086.91~18.04.1 launchpad.net/ubuntu/+source/linux-hwe-5.4/5.4.0-122.138~18.04.1