Ubuntu 24.04 LTS: Linux Kernel Critical Issues Fix USN-7889-1

ubuntu

November 25, 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-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-oracle: Linux kernel for Oracle Cloud systems

- linux-aws-6.8: Linux kernel for Amazon Web Services (AWS) 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:

- Media drivers;

- Network drivers;

- Netfilter;

- TLS protocol;

(CVE-2025-21729, CVE-2025-38227, CVE-2025-38616, CVE-2025-38678)

Topics Covered

security advisory critical Ubuntu system compromise Linux kernel media drivers

Update Instructions

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

Ubuntu 24.04 LTS
  linux-image-6.8.0-1040-oracle   6.8.0-1040.41
  linux-image-6.8.0-1040-oracle-64k  6.8.0-1040.41
  linux-image-6.8.0-1041-ibm      6.8.0-1041.41
  linux-image-6.8.0-1043-aws      6.8.0-1043.45
  linux-image-6.8.0-1043-aws-64k  6.8.0-1043.45
  linux-image-6.8.0-1043-nvidia   6.8.0-1043.46
  linux-image-6.8.0-1043-nvidia-64k  6.8.0-1043.46
  linux-image-6.8.0-1043-nvidia-lowlatency  6.8.0-1043.46.1
  linux-image-6.8.0-1043-nvidia-lowlatency-64k  6.8.0-1043.46.1
  linux-image-6.8.0-88-generic    6.8.0-88.89
  linux-image-6.8.0-88-generic-64k  6.8.0-88.89
  linux-image-6.8.0-88-lowlatency  6.8.0-88.89.1
  linux-image-6.8.0-88-lowlatency-64k  6.8.0-88.89.1
  linux-image-aws-6.8             6.8.0-1043.45
  linux-image-aws-64k-6.8         6.8.0-1043.45
  linux-image-aws-64k-lts-24.04   6.8.0-1043.45
  linux-image-aws-lts-24.04       6.8.0-1043.45
  linux-image-generic             6.8.0-88.89
  linux-image-generic-6.8         6.8.0-88.89
  linux-image-generic-64k         6.8.0-88.89
  linux-image-generic-64k-6.8     6.8.0-88.89
  linux-image-generic-lpae        6.8.0-88.89
  linux-image-ibm                 6.8.0-1041.41
  linux-image-ibm-6.8             6.8.0-1041.41
  linux-image-ibm-classic         6.8.0-1041.41
  linux-image-ibm-lts-24.04       6.8.0-1041.41
  linux-image-kvm                 6.8.0-88.89
  linux-image-lowlatency          6.8.0-88.89.1
  linux-image-lowlatency-6.8      6.8.0-88.89.1
  linux-image-lowlatency-64k      6.8.0-88.89.1
  linux-image-lowlatency-64k-6.8  6.8.0-88.89.1
  linux-image-nvidia              6.8.0-1043.46
  linux-image-nvidia-6.8          6.8.0-1043.46
  linux-image-nvidia-64k          6.8.0-1043.46
  linux-image-nvidia-64k-6.8      6.8.0-1043.46
  linux-image-nvidia-lowlatency   6.8.0-1043.46.1
  linux-image-nvidia-lowlatency-6.8  6.8.0-1043.46.1
  linux-image-nvidia-lowlatency-64k  6.8.0-1043.46.1
  linux-image-nvidia-lowlatency-64k-6.8  6.8.0-1043.46.1
  linux-image-oracle-6.8          6.8.0-1040.41
  linux-image-oracle-64k-6.8      6.8.0-1040.41
  linux-image-oracle-64k-lts-24.04  6.8.0-1040.41
  linux-image-oracle-lts-24.04    6.8.0-1040.41
  linux-image-virtual             6.8.0-88.89
  linux-image-virtual-6.8         6.8.0-88.89

Ubuntu 22.04 LTS
  linux-image-6.8.0-1043-aws      6.8.0-1043.45~22.04.1
  linux-image-6.8.0-1043-aws-64k  6.8.0-1043.45~22.04.1
  linux-image-6.8.0-1043-nvidia   6.8.0-1043.46~22.04.1
  linux-image-6.8.0-1043-nvidia-64k  6.8.0-1043.46~22.04.1
  linux-image-6.8.0-88-lowlatency  6.8.0-88.89.1~22.04.1
  linux-image-6.8.0-88-lowlatency-64k  6.8.0-88.89.1~22.04.1
  linux-image-aws                 6.8.0-1043.45~22.04.1
  linux-image-aws-6.8             6.8.0-1043.45~22.04.1
  linux-image-aws-64k             6.8.0-1043.45~22.04.1
  linux-image-aws-64k-6.8         6.8.0-1043.45~22.04.1
  linux-image-lowlatency-6.8      6.8.0-88.89.1~22.04.1
  linux-image-lowlatency-64k-6.8  6.8.0-88.89.1~22.04.1
  linux-image-lowlatency-64k-hwe-22.04  6.8.0-88.89.1~22.04.1
  linux-image-lowlatency-hwe-22.04  6.8.0-88.89.1~22.04.1
  linux-image-nvidia-6.8          6.8.0-1043.46~22.04.1
  linux-image-nvidia-64k-6.8      6.8.0-1043.46~22.04.1
  linux-image-nvidia-64k-hwe-22.04  6.8.0-1043.46~22.04.1
  linux-image-nvidia-hwe-22.04    6.8.0-1043.46~22.04.1

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.