[USN-7611-1] Linux kernel vulnerabilities

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==========================================================================
Ubuntu Security Notice USN-7611-1
July 02, 2025

linux, linux-gcp, linux-raspi, linux-realtime vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 25.04

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)

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.

References:
https://ubuntu.com/security/notices/USN-7611-1
CVE-2025-37890, CVE-2025-37932, CVE-2025-37997, CVE-2025-38000,
CVE-2025-38001

Package Information:
https://launchpad.net/ubuntu/+source/linux/6.14.0-23.23
https://launchpad.net/ubuntu/+source/linux-gcp/6.14.0-1009.9
https://launchpad.net/ubuntu/+source/linux-raspi/6.14.0-1008.8
https://launchpad.net/ubuntu/+source/linux-realtime/6.14.0-1005.5