1. Ubuntu Security Notices
  2. USN-6650-1

USN-6650-1: Linux kernel (OEM) vulnerability

Publication date

23 February 2024

Overview

The system could be made to crash under certain conditions.

Releases

Packages

Details

Zhenghan Wang discovered that the generic ID allocator implementation in
the Linux kernel did not properly check for null bitmap when releasing IDs.
A local attacker could use this to cause a denial of service (system
crash).

Zhenghan Wang discovered that the generic ID allocator implementation in
the Linux kernel did not properly check for null bitmap when releasing IDs.
A local attacker could use this to cause a denial of service (system
crash).

Update instructions

After a standard system update you need to reboot your computer to make all the necessary changes.

Learn more about how to get the fixes.

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.

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

Ubuntu Release Package Version
22.04 jammy linux-image-6.1.0-1034-oem –  6.1.0-1034.34
linux-image-oem-22.04 –  6.1.0.1034.35
linux-image-oem-22.04a –  6.1.0.1034.35
linux-image-oem-22.04b –  6.1.0.1034.35
linux-image-oem-22.04c –  6.1.0.1034.35

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References

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