A Linux kernel (OEM) security update has been released for Ubuntu Linux 20.04 LTS and 22.04 LTS

USN-5545-1: Linux kernel (OEM) vulnerability

==========================================================================
Ubuntu Security Notice USN-5545-1
August 02, 2022

linux-oem-5.14, linux-oem-5.17 vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS

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.

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

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