[USN-8059-6] Linux kernel vulnerabilities

==========================================================================
Ubuntu Security Notice USN-8059-6
February 26, 2026

linux-aws, linux-aws-6.8, linux-ibm, linux-ibm-6.8, linux-xilinx
vulnerabilities
==========================================================================

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

- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
- linux-aws: Linux kernel for Amazon Web Services (AWS) systems
- linux-ibm: Linux kernel for IBM cloud systems
- linux-xilinx: Linux kernel for Xilinx systems
- linux-aws-6.8: Linux kernel for Amazon Web Services (AWS) systems
- linux-ibm-6.8: Linux kernel for IBM cloud 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:
- SMB network file system;
(CVE-2025-22037, CVE-2025-37899)

Update instructions:

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

Ubuntu 24.04 LTS
linux-image-6.8.0-1024-xilinx 6.8.0-1024.25
linux-image-6.8.0-1045-ibm 6.8.0-1045.45
linux-image-6.8.0-1047-aws 6.8.0-1047.50
linux-image-6.8.0-1047-aws-64k 6.8.0-1047.50
linux-image-aws-6.8 6.8.0-1047.50
linux-image-aws-64k-6.8 6.8.0-1047.50
linux-image-aws-64k-lts-24.04 6.8.0-1047.50
linux-image-aws-lts-24.04 6.8.0-1047.50
linux-image-ibm 6.8.0-1045.45
linux-image-ibm-6.8 6.8.0-1045.45
linux-image-ibm-classic 6.8.0-1045.45
linux-image-ibm-lts-24.04 6.8.0-1045.45
linux-image-xilinx 6.8.0.1024.25
linux-image-xilinx-6.8 6.8.0.1024.25
linux-image-xilinx-zynqmp 6.8.0.1024.25

Ubuntu 22.04 LTS
linux-image-6.8.0-1045-ibm 6.8.0-1045.45~22.04.1
linux-image-6.8.0-1047-aws 6.8.0-1047.50~22.04.1
linux-image-6.8.0-1047-aws-64k 6.8.0-1047.50~22.04.1
linux-image-aws 6.8.0-1047.50~22.04.1
linux-image-aws-6.8 6.8.0-1047.50~22.04.1
linux-image-aws-64k 6.8.0-1047.50~22.04.1
linux-image-aws-64k-6.8 6.8.0-1047.50~22.04.1
linux-image-ibm-6.8 6.8.0-1045.45~22.04.1

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.

References:
https://ubuntu.com/security/notices/USN-8059-6
https://ubuntu.com/security/notices/USN-8059-5
https://ubuntu.com/security/notices/USN-8059-4
https://ubuntu.com/security/notices/USN-8059-3
https://ubuntu.com/security/notices/USN-8059-2
https://ubuntu.com/security/notices/USN-8059-1
CVE-2025-22037, CVE-2025-37899

Package Information:
https://launchpad.net/ubuntu/+source/linux-aws/6.8.0-1047.50
https://launchpad.net/ubuntu/+source/linux-ibm/6.8.0-1045.45
https://launchpad.net/ubuntu/+source/linux-xilinx/6.8.0-1024.25
https://launchpad.net/ubuntu/+source/linux-aws-6.8/6.8.0-1047.50~22.04.1
https://launchpad.net/ubuntu/+source/linux-ibm-6.8/6.8.0-1045.45~22.04.1