Ubuntu 25.04 LTS: Critical Network Issue in Linux Kernel USN-7722-1

ubuntu

August 28, 2025

A security issue was fixed in the Linux kernel.

Summary

A security issue was 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-raspi: Linux kernel for Raspberry Pi systems

- linux-realtime: Linux kernel for Real-time systems

- linux-aws-6.14: Linux kernel for Amazon Web Services (AWS) systems

- linux-hwe-6.14: Linux hardware enablement (HWE) kernel

- linux-realtime-6.14: Linux kernel for Real-time systems

Details:

A security issues was discovered in the Linux kernel.

An attacker could possibly use this to compromise the system.

This update corrects flaws in the following subsystem:

- Network traffic control;

(CVE-2025-38350)

Topics Covered

security advisory security issue critical Ubuntu Linux kernel network control

Update Instructions

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

Ubuntu 25.04
   linux-image-6.14.0-1011-realtime  6.14.0-1011.11
                                   Available with Ubuntu Pro
   linux-image-6.14.0-1012-aws     6.14.0-1012.12
   linux-image-6.14.0-1012-aws-64k  6.14.0-1012.12
   linux-image-6.14.0-1013-raspi   6.14.0-1013.13
   linux-image-6.14.0-1015-gcp     6.14.0-1015.16
   linux-image-6.14.0-1015-gcp-64k  6.14.0-1015.16
   linux-image-6.14.0-29-generic   6.14.0-29.29
   linux-image-6.14.0-29-generic-64k  6.14.0-29.29
   linux-image-aws                 6.14.0-1012.12
   linux-image-aws-6.14            6.14.0-1012.12
   linux-image-aws-64k             6.14.0-1012.12
   linux-image-aws-64k-6.14        6.14.0-1012.12
   linux-image-gcp                 6.14.0-1015.16
   linux-image-gcp-6.14            6.14.0-1015.16
   linux-image-gcp-64k             6.14.0-1015.16
   linux-image-gcp-64k-6.14        6.14.0-1015.16
   linux-image-generic             6.14.0-29.29
   linux-image-generic-6.14        6.14.0-29.29
   linux-image-generic-64k         6.14.0-29.29
   linux-image-generic-64k-6.14    6.14.0-29.29
   linux-image-raspi               6.14.0-1013.13
   linux-image-raspi-6.14          6.14.0-1013.13
   linux-image-realtime            6.14.0-1011.11
   linux-image-realtime-6.14       6.14.0-1011.11
   linux-image-virtual             6.14.0-29.29
   linux-image-virtual-6.14        6.14.0-29.29

Ubuntu 24.04 LTS
   linux-image-6.14.0-1011-realtime  6.14.0-1011.11~24.04.1
                                   Available with Ubuntu Pro
   linux-image-6.14.0-1012-aws     6.14.0-1012.12~24.04.1
   linux-image-6.14.0-1012-aws-64k  6.14.0-1012.12~24.04.1
   linux-image-6.14.0-29-generic   6.14.0-29.29~24.04.1
   linux-image-6.14.0-29-generic-64k  6.14.0-29.29~24.04.1
   linux-image-aws                 6.14.0-1012.12~24.04.1
   linux-image-aws-6.14            6.14.0-1012.12~24.04.1
   linux-image-aws-64k             6.14.0-1012.12~24.04.1
   linux-image-aws-64k-6.14        6.14.0-1012.12~24.04.1
   linux-image-generic-6.14        6.14.0-29.29~24.04.1
   linux-image-generic-64k-6.14    6.14.0-29.29~24.04.1
   linux-image-generic-64k-hwe-24.04  6.14.0-29.29~24.04.1
   linux-image-generic-hwe-24.04   6.14.0-29.29~24.04.1
   linux-image-realtime-6.14       6.14.0-1011.11~24.04.1
                                   Available with Ubuntu Pro
   linux-image-realtime-hwe-24.04  6.14.0-1011.11~24.04.1
                                   Available with Ubuntu Pro
   linux-image-virtual-6.14        6.14.0-29.29~24.04.1
   linux-image-virtual-hwe-24.04   6.14.0-29.29~24.04.1

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.