[USN-6576-1] Linux kernel (OEM) vulnerability

Rodrigo Figueiredo Zaiden rodrigo.zaiden at canonical.com
Wed Jan 10 22:52:06 UTC 2024

Ubuntu Security Notice USN-6576-1
January 10, 2024

linux-oem-6.1 vulnerability

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

- Ubuntu 22.04 LTS


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

Software Description:
- linux-oem-6.1: Linux kernel for OEM systems


Lonial Con discovered that the netfilter subsystem in the Linux kernel did
not properly handle an expired catchall element in some situations, leading
to a use-after-free vulnerability. A local attacker could use this to cause
a denial of service (system crash) or possibly execute arbitrary code.

Update instructions:

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

Ubuntu 22.04 LTS:
   linux-image-6.1.0-1028-oem      6.1.0-1028.28

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.


Package Information:

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