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=========================================================================Ubuntu Security Notice USN-5385-1
April 21, 2022

linux, linux-aws, linux-aws-hwe, linux-azure, linux-azure-4.15,
linux-dell300x, linux-gcp, inux-gcp-4.15, linux-hwe, linux-kvm,
linux-oracle, linux-snapdragon vulnerabilities
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 18.04 LTS
- Ubuntu 16.04 ESM
- Ubuntu 14.04 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-azure-4.15: Linux kernel for Microsoft Azure Cloud systems
- linux-dell300x: Linux kernel for Dell 300x platforms
- linux-gcp-4.15: Linux kernel for Google Cloud Platform (GCP) systems
- linux-kvm: Linux kernel for cloud environments
- linux-oracle: Linux kernel for Oracle Cloud systems
- linux-snapdragon: Linux kernel for Qualcomm Snapdragon processors- linux-aws-hwe: Linux kernel for Amazon Web Services (AWS-HWE) systems
- linux-azure: Linux kernel for Microsoft Azure Cloud systems
- linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems
- linux-hwe: Linux hardware enablement (HWE) kernel

Details:

Brendan Dolan-Gavitt discovered that the aQuantia AQtion Ethernet device
driver in the Linux kernel did not properly validate meta-data coming from
the device. A local attacker who can control an emulated device can use
this to cause a denial of service (system crash) or possibly execute
arbitrary code. (CVE-2021-43975)

It was discovered that the UDF file system implementation in the Linux
kernel could attempt to dereference a null pointer in some situations. An
attacker could use this to construct a malicious UDF image that, when
mounted and operated on, could cause a denial of service (system crash).
(CVE-2022-0617)

Lyu Tao discovered that the NFS implementation in the Linux kernel did not
properly handle requests to open a directory on a regular file. A local
attacker could use this to expose sensitive information (kernel memory).
(CVE-2022-24448)

It was discovered that the YAM AX.25 device driver in the Linux kernel did
not properly deallocate memory in some error conditions. A local privileged
attacker could use this to cause a denial of service (kernel memory
exhaustion). (CVE-2022-24959)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 18.04 LTS:
  linux-image-4.15.0-1041-dell300x  4.15.0-1041.46
  linux-image-4.15.0-1092-oracle  4.15.0-1092.101
  linux-image-4.15.0-1113-kvm     4.15.0-1113.116
  linux-image-4.15.0-1121-gcp     4.15.0-1121.135
  linux-image-4.15.0-1126-snapdragon  4.15.0-1126.135
  linux-image-4.15.0-1127-aws     4.15.0-1127.136
  linux-image-4.15.0-1137-azure   4.15.0-1137.150
  linux-image-4.15.0-176-generic  4.15.0-176.185
  linux-image-4.15.0-176-generic-lpae  4.15.0-176.185
  linux-image-4.15.0-176-lowlatency  4.15.0-176.185
  linux-image-aws-lts-18.04       4.15.0.1127.130
  linux-image-azure-lts-18.04     4.15.0.1137.110
  linux-image-dell300x            4.15.0.1041.43
  linux-image-gcp-lts-18.04       4.15.0.1121.140
  linux-image-generic             4.15.0.176.165
  linux-image-generic-lpae        4.15.0.176.165
  linux-image-kvm                 4.15.0.1113.109
  linux-image-lowlatency          4.15.0.176.165
  linux-image-oracle-lts-18.04    4.15.0.1092.102
  linux-image-snapdragon          4.15.0.1126.129
  linux-image-virtual             4.15.0.176.165

Ubuntu 16.04 ESM:
  linux-image-4.15.0-1092-oracle  4.15.0-1092.101~16.04.1
  linux-image-4.15.0-1121-gcp     4.15.0-1121.135~16.04.1
  linux-image-4.15.0-1127-aws-hwe  4.15.0-1127.136~16.04.1
  linux-image-4.15.0-1137-azure   4.15.0-1137.150~16.04.1
  linux-image-4.15.0-176-generic  4.15.0-176.185~16.04.1
  linux-image-4.15.0-176-lowlatency  4.15.0-176.185~16.04.1
  linux-image-aws-hwe             4.15.0.1127.117
  linux-image-azure               4.15.0.1137.127
  linux-image-gcp                 4.15.0.1121.122
  linux-image-generic-hwe-16.04   4.15.0.176.168
  linux-image-gke                 4.15.0.1121.122
  linux-image-lowlatency-hwe-16.04  4.15.0.176.168
  linux-image-oem                 4.15.0.176.168
  linux-image-oracle              4.15.0.1092.80
  linux-image-virtual-hwe-16.04   4.15.0.176.168

Ubuntu 14.04 ESM:
  linux-image-4.15.0-1137-azure   4.15.0-1137.150~14.04.1
  linux-image-azure               4.15.0.1137.109

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-5385-1
  CVE-2021-43975, CVE-2022-0617, CVE-2022-24448, CVE-2022-24959

Package Information:
  https://launchpad.net/ubuntu/+source/linux/4.15.0-176.185
  https://launchpad.net/ubuntu/+source/linux-aws/4.15.0-1127.136
  https://launchpad.net/ubuntu/+source/linux-azure-4.15/4.15.0-1137.150
  https://launchpad.net/ubuntu/+source/linux-dell300x/4.15.0-1041.46
  https://launchpad.net/ubuntu/+source/linux-gcp-4.15/4.15.0-1121.135
  https://launchpad.net/ubuntu/+source/linux-kvm/4.15.0-1113.116
  https://launchpad.net/ubuntu/+source/linux-oracle/4.15.0-1092.101
  https://launchpad.net/ubuntu/+source/linux-snapdragon/4.15.0-1126.135

Ubuntu 5385-1: Linux kernel vulnerabilities

April 21, 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 18.04 LTS: linux-image-4.15.0-1041-dell300x 4.15.0-1041.46 linux-image-4.15.0-1092-oracle 4.15.0-1092.101 linux-image-4.15.0-1113-kvm 4.15.0-1113.116 linux-image-4.15.0-1121-gcp 4.15.0-1121.135 linux-image-4.15.0-1126-snapdragon 4.15.0-1126.135 linux-image-4.15.0-1127-aws 4.15.0-1127.136 linux-image-4.15.0-1137-azure 4.15.0-1137.150 linux-image-4.15.0-176-generic 4.15.0-176.185 linux-image-4.15.0-176-generic-lpae 4.15.0-176.185 linux-image-4.15.0-176-lowlatency 4.15.0-176.185 linux-image-aws-lts-18.04 4.15.0.1127.130 linux-image-azure-lts-18.04 4.15.0.1137.110 linux-image-dell300x 4.15.0.1041.43 linux-image-gcp-lts-18.04 4.15.0.1121.140 linux-image-generic 4.15.0.176.165 linux-image-generic-lpae 4.15.0.176.165 linux-image-kvm 4.15.0.1113.109 linux-image-lowlatency 4.15.0.176.165 linux-image-oracle-lts-18.04 4.15.0.1092.102 linux-image-snapdragon 4.15.0.1126.129 linux-image-virtual 4.15.0.176.165 Ubuntu 16.04 ESM: linux-image-4.15.0-1092-oracle 4.15.0-1092.101~16.04.1 linux-image-4.15.0-1121-gcp 4.15.0-1121.135~16.04.1 linux-image-4.15.0-1127-aws-hwe 4.15.0-1127.136~16.04.1 linux-image-4.15.0-1137-azure 4.15.0-1137.150~16.04.1 linux-image-4.15.0-176-generic 4.15.0-176.185~16.04.1 linux-image-4.15.0-176-lowlatency 4.15.0-176.185~16.04.1 linux-image-aws-hwe 4.15.0.1127.117 linux-image-azure 4.15.0.1137.127 linux-image-gcp 4.15.0.1121.122 linux-image-generic-hwe-16.04 4.15.0.176.168 linux-image-gke 4.15.0.1121.122 linux-image-lowlatency-hwe-16.04 4.15.0.176.168 linux-image-oem 4.15.0.176.168 linux-image-oracle 4.15.0.1092.80 linux-image-virtual-hwe-16.04 4.15.0.176.168 Ubuntu 14.04 ESM: linux-image-4.15.0-1137-azure 4.15.0-1137.150~14.04.1 linux-image-azure 4.15.0.1137.109 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-5385-1

CVE-2021-43975, CVE-2022-0617, CVE-2022-24448, CVE-2022-24959

Severity
April 21, 2022

Package Information

https://launchpad.net/ubuntu/+source/linux/4.15.0-176.185 https://launchpad.net/ubuntu/+source/linux-aws/4.15.0-1127.136 https://launchpad.net/ubuntu/+source/linux-azure-4.15/4.15.0-1137.150 https://launchpad.net/ubuntu/+source/linux-dell300x/4.15.0-1041.46 https://launchpad.net/ubuntu/+source/linux-gcp-4.15/4.15.0-1121.135 https://launchpad.net/ubuntu/+source/linux-kvm/4.15.0-1113.116 https://launchpad.net/ubuntu/+source/linux-oracle/4.15.0-1092.101 https://launchpad.net/ubuntu/+source/linux-snapdragon/4.15.0-1126.135

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