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Ubuntu 22.04 LTS USN-5545-1 Critical: Linux Kernel Privilege Escalation

ubuntu
Calendar Grey August 2, 2022
Dist Ubuntu Esm H88
New patch released for Ubuntu addressing kernel flaws that could enable unauthorized programs to execute with elevated privileges. Critical update ready for immediate installation.
The system could be made to run programs as an administrator.

Summary

The system could be made to run programs as an administrator.

Software Description:

- linux-oem-5.17: Linux kernel for OEM systems

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

Details:

Arthur Mongodin discovered that the netfilter subsystem in the Linux kernel

did not properly perform data validation. A local attacker could use this

to escalate privileges in certain situations.

Topics%20covered

Topics Covered

security advisory critical privilege escalation ubuntu linux kernel

Update Instructions

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

Ubuntu 22.04 LTS:
   linux-image-5.17.0-1014-oem     5.17.0-1014.15
   linux-image-oem-22.04           5.17.0.1014.13
   linux-image-oem-22.04a          5.17.0.1014.13

Ubuntu 20.04 LTS:
   linux-image-5.14.0-1046-oem     5.14.0-1046.53
   linux-image-oem-20.04           5.14.0.1046.42
   linux-image-oem-20.04b          5.14.0.1046.42
   linux-image-oem-20.04c          5.14.0.1046.42
   linux-image-oem-20.04d          5.14.0.1046.42

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-5545-1

CVE-2022-34918

Severity
critical
Lowest
Low
Medium
High
Critical

August 02, 2022

Topics%20covered

Topics Covered

security advisory critical privilege escalation ubuntu linux kernel

Package Information

https://launchpad.net/ubuntu/+source/linux-oem-5.17/5.17.0-1014.15
https://launchpad.net/ubuntu/+source/linux-oem-5.14/5.14.0-1046.53

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