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Linux Kernel (NVIDIA) Vulnerabilities — Ubuntu Security Update (USN-8623-1)

This is a security release for Ubuntu 20.04, Ubuntu 22.04. The fix ships in the current release line (referenced builds: 24.04, 17.0-1029). Update the product on every affected server to the patched release — there is no workaround, and unpatched servers remain exposed until updated.

High 8.8 CVSS
Ubuntu 20.04 Ubuntu 22.04

Fix Commands

Debian/Ubuntu

sudo apt update && sudo apt upgrade

What this means under a SharedLicense license

The advisory's own severity data peaks at CVSS 8.8; unpatched Ubuntu 20.04, Ubuntu 22.04 servers remain exposed until updated.

Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
– ARM64 architecture;
– Arm Firmware Framework for ARMv8-A(FFA);
(CVE-2026-53354, CVE-2026-64520)

  1. Ubuntu Security Notices

  2. USN-8623-1

Publication date

29 July 2026

Overview

Several security issues were fixed in the Linux kernel.

Releases


24.04 LTS

Packages

Details

Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:

  • ARM64 architecture;
  • Arm Firmware Framework for ARMv8-A(FFA)

Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:

  • ARM64 architecture;
  • Arm Firmware Framework for ARMv8-A(FFA)

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
24.04 LTS noble linux-image-6.17.0-1029-nvidia –  6.17.0-1029.29
linux-image-6.17.0-1029-nvidia-64k –  6.17.0-1029.29
linux-image-nvidia-6.17 –  6.17.0-1029.29
linux-image-nvidia-64k-6.17 –  6.17.0-1029.29
linux-image-nvidia-64k-hwe-24.04 –  6.17.0-1029.29
linux-image-nvidia-hwe-24.04 –  6.17.0-1029.29

References

Related notices

Have additional questions?

Talk to a member of the team ›

Frequently Asked Questions

What does USN-8623-1 fix?
Several security issues were discovered in the Linux kernel.
Which Ubuntu releases are covered?
Ubuntu 20.04, Ubuntu 22.04.
How do I apply it?
Standard package update (apt), then reboot.

References

Security Advisories

Related Advisories

Linux Kernel (HWE) Vulnerabilities — Ubuntu Security Update (USN-9018-2)

2026-11-12

Tornado Regression — Ubuntu Security Update (USN-8952-3)

2026-11-11

Linux Kernel (Azure CVM) Vulnerabilities — Ubuntu Security Update (USN-9039-1)

2026-11-11

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