[USN-7829-3] Linux kernel vulnerabilities

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==========================================================================
Ubuntu Security Notice USN-7829-3
October 22, 2025

linux-azure, linux-azure-5.15, linux-gcp-5.15 vulnerabilities
==========================================================================

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

- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
- linux-azure: Linux kernel for Microsoft Azure Cloud systems
- linux-azure-5.15: Linux kernel for Microsoft Azure cloud systems
- linux-gcp-5.15: Linux kernel for Google Cloud Platform (GCP) 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:
- GPU drivers;
- Network drivers;
- Netlink;
(CVE-2024-26700, CVE-2025-38727, CVE-2023-52593, CVE-2024-26896)

Update instructions:

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

Ubuntu 22.04 LTS
linux-image-5.15.0-1098-azure 5.15.0-1098.107
linux-image-azure-5.15 5.15.0.1098.96
linux-image-azure-lts-22.04 5.15.0.1098.96

Ubuntu 20.04 LTS
linux-image-5.15.0-1095-gcp 5.15.0-1095.104~20.04.1
Available with Ubuntu Pro
linux-image-5.15.0-1098-azure 5.15.0-1098.107~20.04.1
Available with Ubuntu Pro
linux-image-azure 5.15.0.1098.107~20.04.1
Available with Ubuntu Pro
linux-image-azure-5.15 5.15.0.1098.107~20.04.1
Available with Ubuntu Pro
linux-image-azure-cvm 5.15.0.1098.107~20.04.1
Available with Ubuntu Pro
linux-image-gcp 5.15.0.1095.104~20.04.1
Available with Ubuntu Pro
linux-image-gcp-5.15 5.15.0.1095.104~20.04.1
Available with Ubuntu Pro

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-7829-3
https://ubuntu.com/security/notices/USN-7829-2
https://ubuntu.com/security/notices/USN-7829-1
CVE-2023-52593, CVE-2024-26700, CVE-2024-26896, CVE-2025-38727

Package Information:
https://launchpad.net/ubuntu/+source/linux-azure/5.15.0-1098.107