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Ubuntu 20.04 LTS: 5346-1 Moderate: DoS Kernel Threat from Network Traffic

ubuntu
Calendar Grey March 24, 2022
Dist Ubuntu Esm H88
Ubuntu 20.04 LTS encounters a critical kernel flaw linked to a network security threat. Prompt update required to mitigate potential dangers!
The system could be made to crash if it received specially crafted network traffic.

Summary

The system could be made to crash if it received specially crafted

network traffic.

Software Description:

- linux-oem-5.14: Linux kernel for OEM systems

Details:

It was discovered that the ICMPv6 implementation in the Linux kernel did

not properly deallocate memory in certain situations. A remote attacker

could possibly use this to cause a denial of service (memory exhaustion).

Topics%20covered

Topics Covered

security advisory network traffic kernel issue ubuntu system crash dos threat

Update Instructions

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

Ubuntu 20.04 LTS:
  linux-image-5.14.0-1029-oem     5.14.0-1029.32
  linux-image-oem-20.04           5.14.0.1029.26
  linux-image-oem-20.04b          5.14.0.1029.26
  linux-image-oem-20.04c          5.14.0.1029.26
  linux-image-oem-20.04d          5.14.0.1029.26

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-5346-1

CVE-2022-0742

March 24, 2022

Topics%20covered

Topics Covered

security advisory network traffic kernel issue ubuntu system crash dos threat

Package Information

https://launchpad.net/ubuntu/+source/linux-oem-5.14/5.14.0-1029.32

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