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[USN-8842-1] Linux kernel (NVIDIA) vulnerabilities

Posted on 29 September 2026
Ubuntu Security

==========================================================================Ubuntu Security Notice USN-8842-1
September 29, 2026

linux-nvidia, linux-nvidia-6.8, linux-nvidia-lowlatency vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
- linux-nvidia: Linux kernel for NVIDIA systems
- linux-nvidia-lowlatency: Linux low latency kernel for NVIDIA systems
- linux-nvidia-6.8: Linux kernel for NVIDIA systems

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:
- InfiniBand drivers;
- Network drivers;
- TCM subsystem;
- B.A.T.M.A.N. meshing protocol;
- HSR network protocol;
- IPv4 networking;
- IPv6 networking;
- Netfilter;
- RDS protocol;
(CVE-2026-53131, CVE-2026-53186, CVE-2026-53216, CVE-2026-53221,
CVE-2026-53355, CVE-2026-63886, CVE-2026-63887, CVE-2026-63888,
CVE-2026-63912, CVE-2026-63922, CVE-2026-63924, CVE-2026-63984,
CVE-2026-63992, CVE-2026-63993, CVE-2026-63994, CVE-2026-64000,
CVE-2026-64007, CVE-2026-64091)

Update instructions:

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

Ubuntu 24.04 LTS
linux-image-6.8.0-1063-nvidia 6.8.0-1063.66
linux-image-6.8.0-1063-nvidia-64k 6.8.0-1063.66
linux-image-6.8.0-1063-nvidia-lowlatency 6.8.0-1063.66.1
linux-image-6.8.0-1063-nvidia-lowlatency-64k 6.8.0-1063.66.1
linux-image-nvidia 6.8.0-1063.66
linux-image-nvidia-6.8 6.8.0-1063.66
linux-image-nvidia-64k 6.8.0-1063.66
linux-image-nvidia-64k-6.8 6.8.0-1063.66
linux-image-nvidia-lowlatency 6.8.0-1063.66.1
linux-image-nvidia-lowlatency-6.8 6.8.0-1063.66.1
linux-image-nvidia-lowlatency-64k 6.8.0-1063.66.1
linux-image-nvidia-lowlatency-64k-6.8 6.8.0-1063.66.1

Ubuntu 22.04 LTS
linux-image-6.8.0-1063-nvidia 6.8.0-1063.66~22.04.1
linux-image-6.8.0-1063-nvidia-64k 6.8.0-1063.66~22.04.1
linux-image-nvidia-6.8 6.8.0-1063.66~22.04.1
linux-image-nvidia-64k-6.8 6.8.0-1063.66~22.04.1
linux-image-nvidia-64k-hwe-22.04 6.8.0-1063.66~22.04.1
linux-image-nvidia-hwe-22.04 6.8.0-1063.66~22.04.1

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-8842-1
CVE-2026-53131, CVE-2026-53186, CVE-2026-53216, CVE-2026-53221,
CVE-2026-53355, CVE-2026-63886, CVE-2026-63887, CVE-2026-63888,
CVE-2026-63912, CVE-2026-63922, CVE-2026-63924, CVE-2026-63984,
CVE-2026-63992, CVE-2026-63993, CVE-2026-63994, CVE-2026-64000,
CVE-2026-64007, CVE-2026-64091

Package Information:
https://launchpad.net/ubuntu/+source/linux-nvidia/6.8.0-1063.66
https://launchpad.net/ubuntu/+source/linux-nvidia-lowlatency/6.8.0-1063.66.1
https://launchpad.net/ubuntu/+source/linux-nvidia-6.8/6.8.0-1063.66~22.04.1

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