Ubuntu 21.10 USN-5358-2 Critical: Linux Kernel Denial Of Service

ubuntu

March 31, 2022

Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux-azure: Linux kernel for Microsoft Azure Cloud systems

- linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems

- linux-gcp-5.13: Linux kernel for Google Cloud Platform (GCP) systems

- linux-gke: Linux kernel for Google Container Engine (GKE) systems

- linux-gkeop: Linux kernel for Google Container Engine (GKE) systems

- linux-aws-5.4: Linux kernel for Amazon Web Services (AWS) systems

- linux-gcp-5.4: Linux kernel for Google Cloud Platform (GCP) systems

- linux-gke-5.4: Linux kernel for Google Container Engine (GKE) systems

- linux-gkeop-5.4: Linux kernel for Google Container Engine (GKE) systems

Details:

It was discovered that the network traffic control 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-2022-1055)

It was discovered that the I...

Read the Full Advisory

Topics Covered

security advisory denial of service buffer overflow kernel ubuntu system crash cloud

Update Instructions

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

Ubuntu 21.10:
  linux-image-5.13.0-1021-azure   5.13.0-1021.24
  linux-image-azure               5.13.0.1021.21

Ubuntu 20.04 LTS:
  linux-image-5.13.0-1023-gcp     5.13.0-1023.28~20.04.1
  linux-image-5.4.0-1038-gkeop    5.4.0-1038.39
  linux-image-5.4.0-1067-gke      5.4.0-1067.70
  linux-image-5.4.0-1069-gcp      5.4.0-1069.73
  linux-image-gcp                 5.13.0.1023.28~20.04.1
  linux-image-gcp-lts-20.04       5.4.0.1069.78
  linux-image-gke                 5.4.0.1067.77
  linux-image-gkeop               5.4.0.1038.41

Ubuntu 18.04 LTS:
  linux-image-5.4.0-1038-gkeop    5.4.0-1038.39~18.04.1
  linux-image-5.4.0-1067-gke      5.4.0-1067.70~18.04.1
  linux-image-5.4.0-1069-gcp      5.4.0-1069.73~18.04.1
  linux-image-5.4.0-1071-aws      5.4.0-1071.76~18.04.1
  linux-image-aws                 5.4.0.1071.53
  linux-image-gcp                 5.4.0.1069.54
  linux-image-gke-5.4             5.4.0.1067.70~18.04.31
  linux-image-gkeop-5.4           5.4.0.1038.39~18.04.38

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.