=========================================================================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:
  https://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:
  https://launchpad.net/ubuntu/+source/linux/5.4.0-122.138
  https://launchpad.net/ubuntu/+source/linux-aws/5.4.0-1081.88
  https://launchpad.net/ubuntu/+source/linux-azure/5.4.0-1086.91
  https://launchpad.net/ubuntu/+source/linux-azure-fde/5.4.0-1086.91+cvm1.1
  https://launchpad.net/ubuntu/+source/linux-gke/5.4.0-1078.84
  https://launchpad.net/ubuntu/+source/linux-gkeop/5.4.0-1049.52
  https://launchpad.net/ubuntu/+source/linux-ibm/5.4.0-1029.33
  https://launchpad.net/ubuntu/+source/linux-kvm/5.4.0-1071.76
  https://launchpad.net/ubuntu/+source/linux-azure-5.4/5.4.0-1086.91~18.04.1
  https://launchpad.net/ubuntu/+source/linux-hwe-5.4/5.4.0-122.138~18.04.1

Ubuntu 5514-1: Linux kernel vulnerabilities

July 13, 2022
Several security issues were fixed in the Linux kernel.

Summary

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

https://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

Severity
July 13, 2022

Package Information

https://launchpad.net/ubuntu/+source/linux/5.4.0-122.138 https://launchpad.net/ubuntu/+source/linux-aws/5.4.0-1081.88 https://launchpad.net/ubuntu/+source/linux-azure/5.4.0-1086.91 https://launchpad.net/ubuntu/+source/linux-azure-fde/5.4.0-1086.91+cvm1.1 https://launchpad.net/ubuntu/+source/linux-gke/5.4.0-1078.84 https://launchpad.net/ubuntu/+source/linux-gkeop/5.4.0-1049.52 https://launchpad.net/ubuntu/+source/linux-ibm/5.4.0-1029.33 https://launchpad.net/ubuntu/+source/linux-kvm/5.4.0-1071.76 https://launchpad.net/ubuntu/+source/linux-azure-5.4/5.4.0-1086.91~18.04.1 https://launchpad.net/ubuntu/+source/linux-hwe-5.4/5.4.0-122.138~18.04.1

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