Ubuntu 24.04 & 22.04: Linux Kernel Critical Security Update USN-7792-1

ubuntu

October 1, 2025

Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux: Linux kernel

- linux-aws: Linux kernel for Amazon Web Services (AWS) systems

- linux-gcp: 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

- linux-ibm: Linux kernel for IBM cloud systems

- linux-lowlatency: Linux low latency kernel

- linux-nvidia: Linux kernel for NVIDIA systems

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

- linux-gcp-6.8: Linux kernel for Google Cloud Platform (GCP) systems

- linux-ibm-6.8: Linux kernel for IBM cloud systems

- linux-lowlatency-hwe-6.8: Linux low latency kernel

- 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:

...

Read the Full Advisory

Topics Covered

security advisory security issue critical DoS Ubuntu Linux kernel

Update Instructions

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

Ubuntu 24.04 LTS
  linux-image-6.8.0-1024-gkeop    6.8.0-1024.26
  linux-image-6.8.0-1037-gke      6.8.0-1037.41
  linux-image-6.8.0-1037-gke-64k  6.8.0-1037.41
  linux-image-6.8.0-1038-ibm      6.8.0-1038.38
  linux-image-6.8.0-1040-aws      6.8.0-1040.42
  linux-image-6.8.0-1040-aws-64k  6.8.0-1040.42
  linux-image-6.8.0-1040-nvidia   6.8.0-1040.43
  linux-image-6.8.0-1040-nvidia-64k  6.8.0-1040.43
  linux-image-6.8.0-1040-nvidia-lowlatency  6.8.0-1040.43.1
  linux-image-6.8.0-1040-nvidia-lowlatency-64k  6.8.0-1040.43.1
  linux-image-6.8.0-1041-gcp      6.8.0-1041.43
  linux-image-6.8.0-1041-gcp-64k  6.8.0-1041.43
  linux-image-6.8.0-85-generic    6.8.0-85.85
  linux-image-6.8.0-85-generic-64k  6.8.0-85.85
  linux-image-6.8.0-85-lowlatency  6.8.0-85.85.1
  linux-image-6.8.0-85-lowlatency-64k  6.8.0-85.85.1
  linux-image-aws-6.8             6.8.0-1040.42
  linux-image-aws-64k-6.8         6.8.0-1040.42
  linux-image-aws-64k-lts-24.04   6.8.0-1040.42
  linux-image-aws-lts-24.04       6.8.0-1040.42
  linux-image-gcp-6.8             6.8.0-1041.43
  linux-image-gcp-64k-6.8         6.8.0-1041.43
  linux-image-gcp-64k-lts-24.04   6.8.0-1041.43
  linux-image-gcp-lts-24.04       6.8.0-1041.43
  linux-image-generic             6.8.0-85.85
  linux-image-generic-6.8         6.8.0-85.85
  linux-image-generic-64k         6.8.0-85.85
  linux-image-generic-64k-6.8     6.8.0-85.85
  linux-image-generic-lpae        6.8.0-85.85
  linux-image-gke                 6.8.0-1037.41
  linux-image-gke-6.8             6.8.0-1037.41
  linux-image-gke-64k             6.8.0-1037.41
  linux-image-gke-64k-6.8         6.8.0-1037.41
  linux-image-gkeop               6.8.0-1024.26
  linux-image-gkeop-6.8           6.8.0-1024.26
  linux-image-ibm                 6.8.0-1038.38
  linux-image-ibm-6.8             6.8.0-1038.38
  linux-image-ibm-classic         6.8.0-1038.38
  linux-image-ibm-lts-24.04       6.8.0-1038.38
  linux-image-kvm                 6.8.0-85.85
  linux-image-lowlatency          6.8.0-85.85.1
  linux-image-lowlatency-6.8      6.8.0-85.85.1
  linux-image-lowlatency-64k      6.8.0-85.85.1
  linux-image-lowlatency-64k-6.8  6.8.0-85.85.1
  linux-image-nvidia              6.8.0-1040.43
  linux-image-nvidia-6.8          6.8.0-1040.43
  linux-image-nvidia-64k          6.8.0-1040.43
  linux-image-nvidia-64k-6.8      6.8.0-1040.43
  linux-image-nvidia-lowlatency   6.8.0-1040.43.1
  linux-image-nvidia-lowlatency-6.8  6.8.0-1040.43.1
  linux-image-nvidia-lowlatency-64k  6.8.0-1040.43.1
  linux-image-nvidia-lowlatency-64k-6.8  6.8.0-1040.43.1
  linux-image-virtual             6.8.0-85.85
  linux-image-virtual-6.8         6.8.0-85.85

Ubuntu 22.04 LTS
  linux-image-6.8.0-1038-ibm      6.8.0-1038.38~22.04.1
  linux-image-6.8.0-1040-nvidia   6.8.0-1040.43~22.04.1
  linux-image-6.8.0-1040-nvidia-64k  6.8.0-1040.43~22.04.1
  linux-image-6.8.0-1041-gcp      6.8.0-1041.43~22.04.1
  linux-image-6.8.0-1041-gcp-64k  6.8.0-1041.43~22.04.1
  linux-image-6.8.0-85-lowlatency  6.8.0-85.85.1~22.04.1
  linux-image-6.8.0-85-lowlatency-64k  6.8.0-85.85.1~22.04.1
  linux-image-gcp                 6.8.0-1041.43~22.04.1
  linux-image-gcp-6.8             6.8.0-1041.43~22.04.1
  linux-image-gcp-64k             6.8.0-1041.43~22.04.1
  linux-image-gcp-64k-6.8         6.8.0-1041.43~22.04.1
  linux-image-ibm-6.8             6.8.0-1038.38~22.04.1
  linux-image-lowlatency-6.8      6.8.0-85.85.1~22.04.1
  linux-image-lowlatency-64k-6.8  6.8.0-85.85.1~22.04.1
  linux-image-lowlatency-64k-hwe-22.04  6.8.0-85.85.1~22.04.1
  linux-image-lowlatency-hwe-22.04  6.8.0-85.85.1~22.04.1
  linux-image-nvidia-6.8          6.8.0-1040.43~22.04.1
  linux-image-nvidia-64k-6.8      6.8.0-1040.43~22.04.1
  linux-image-nvidia-64k-hwe-22.04  6.8.0-1040.43~22.04.1
  linux-image-nvidia-hwe-22.04    6.8.0-1040.43~22.04.1

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.