Ubuntu 25.04: USN-7611-1 critical: Linux kernel network flaws

ubuntu

July 2, 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-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

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:

- Netfilter;

- Network traffic control;

(CVE-2025-38000, CVE-2025-37890, CVE-2025-38001, CVE-2025-37997,

CVE-2025-37932)

Topics Covered

security advisory critical network flaws Ubuntu system update Linux kernel

Update Instructions

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

Ubuntu 25.04
   linux-image-6.14.0-1005-realtime  6.14.0-1005.5
   linux-image-6.14.0-1008-raspi   6.14.0-1008.8
   linux-image-6.14.0-1009-gcp     6.14.0-1009.9
   linux-image-6.14.0-1009-gcp-64k  6.14.0-1009.9
   linux-image-6.14.0-23-generic   6.14.0-23.23
   linux-image-6.14.0-23-generic-64k  6.14.0-23.23
   linux-image-gcp                 6.14.0-1009.9
   linux-image-gcp-6.14            6.14.0-1009.9
   linux-image-gcp-64k             6.14.0-1009.9
   linux-image-gcp-64k-6.14        6.14.0-1009.9
   linux-image-generic             6.14.0-23.23
   linux-image-generic-6.14        6.14.0-23.23
   linux-image-generic-64k         6.14.0-23.23
   linux-image-generic-64k-6.14    6.14.0-23.23
   linux-image-raspi               6.14.0-1008.8
   linux-image-raspi-6.14          6.14.0-1008.8
   linux-image-realtime            6.14.0-1005.5
   linux-image-realtime-6.14       6.14.0-1005.5
   linux-image-virtual             6.14.0-23.23
   linux-image-virtual-6.14        6.14.0-23.23

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.