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Medium 2026-07-29

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

Ubuntu 20.04 Ubuntu 22.04

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)

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)

Publication date

29 July 2026

Overview

Several security issues were fixed in the Linux kernel.

Releases


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:


Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.


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How to Apply the Fix

Update the affected packages on your server to the patched release, then restart the relevant services.

sudo apt update && sudo apt upgrade
More Information

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