Update12/07/2025

USN-7889-4: Linux kernel vulnerabilities

Ubuntu Server
Canonical

USN-7889-4: Linux kernel vulnerabilities

Publication date: 4 December 2025
Overview: Several security issues were fixed in the Linux kernel.

Packages

linux-gcp - Linux kernel for Google Cloud Platform (GCP) systems
linux-gcp-6.8 - Linux kernel for Google Cloud Platform (GCP) systems
linux-gke - Linux kernel for Google Container Engine (GKE) systems
linux-gkeop - Linux kernel for Google Container Engine (GKE) 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:

Media drivers;
Network drivers;
Netfilter;
TLS protocol

Update instructions
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.

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

24.04 LTS noble

linux-image-6.8.0-1027-gkeop – 6.8.0-1027.30
linux-image-6.8.0-1040-gke – 6.8.0-1040.45
linux-image-6.8.0-1040-gke-64k – 6.8.0-1040.45
linux-image-6.8.0-1044-gcp – 6.8.0-1044.47
linux-image-6.8.0-1044-gcp-64k – 6.8.0-1044.47
linux-image-gcp-6.8 – 6.8.0-1044.47
linux-image-gcp-64k-6.8 – 6.8.0-1044.47
linux-image-gcp-64k-lts-24.04 – 6.8.0-1044.47
linux-image-gcp-lts-24.04 – 6.8.0-1044.47
linux-image-gke – 6.8.0-1040.45
linux-image-gke-6.8 – 6.8.0-1040.45
linux-image-gke-64k – 6.8.0-1040.45
linux-image-gke-64k-6.8 – 6.8.0-1040.45
linux-image-gkeop – 6.8.0-1027.30
linux-image-gkeop-6.8 – 6.8.0-1027.30

22.04 LTS jammy

linux-image-6.8.0-1044-gcp – 6.8.0-1044.47~22.04.1
linux-image-6.8.0-1044-gcp-64k – 6.8.0-1044.47~22.04.1
linux-image-gcp – 6.8.0-1044.47~22.04.1
linux-image-gcp-6.8 – 6.8.0-1044.47~22.04.1
linux-image-gcp-64k – 6.8.0-1044.47~22.04.1
linux-image-gcp-64k-6.8 – 6.8.0-1044.47~22.04.1