[USN-8016-1] Linux kernel (NVIDIA) vulnerabilities

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==========================================================================
Ubuntu Security Notice USN-8016-1
February 04, 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:
- Cryptographic API;
- SPI subsystem;
- SMB network file system;
- io_uring subsystem;
(CVE-2025-38561, CVE-2025-39698, CVE-2025-40019, CVE-2025-68746)

Update instructions:

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

Ubuntu 24.04 LTS
linux-image-6.8.0-1045-nvidia 6.8.0-1045.48
linux-image-6.8.0-1045-nvidia-64k 6.8.0-1045.48
linux-image-6.8.0-1045-nvidia-lowlatency 6.8.0-1045.48.1
linux-image-6.8.0-1045-nvidia-lowlatency-64k 6.8.0-1045.48.1
linux-image-nvidia 6.8.0-1045.48
linux-image-nvidia-6.8 6.8.0-1045.48
linux-image-nvidia-64k 6.8.0-1045.48
linux-image-nvidia-64k-6.8 6.8.0-1045.48
linux-image-nvidia-lowlatency 6.8.0-1045.48.1
linux-image-nvidia-lowlatency-6.8 6.8.0-1045.48.1
linux-image-nvidia-lowlatency-64k 6.8.0-1045.48.1
linux-image-nvidia-lowlatency-64k-6.8 6.8.0-1045.48.1

Ubuntu 22.04 LTS
linux-image-6.8.0-1045-nvidia 6.8.0-1045.48~22.04.1
linux-image-6.8.0-1045-nvidia-64k 6.8.0-1045.48~22.04.1
linux-image-nvidia-6.8 6.8.0-1045.48~22.04.1
linux-image-nvidia-64k-6.8 6.8.0-1045.48~22.04.1
linux-image-nvidia-64k-hwe-22.04 6.8.0-1045.48~22.04.1
linux-image-nvidia-hwe-22.04 6.8.0-1045.48~22.04.1

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-8016-1
CVE-2025-38561, CVE-2025-39698, CVE-2025-40019, CVE-2025-68746

Package Information:
https://launchpad.net/ubuntu/+source/linux-nvidia/6.8.0-1045.48
https://launchpad.net/ubuntu/+source/linux-nvidia-lowlatency/6.8.0-1045.48.1
https://launchpad.net/ubuntu/+source/linux-nvidia-6.8/6.8.0-1045.48~22.04.1