==========================================================================
Ubuntu Security Notice USN-7931-4
December 19, 2025

linux-xilinx vulnerabilities
==========================================================================

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

- Ubuntu 24.04 LTS

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
- linux-xilinx: Linux kernel for Xilinx 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:
  - Cryptographic API;
  - Media drivers;
  - Memory management;
  - Appletalk network protocol;
  - Netfilter;
(CVE-2025-37958, CVE-2025-38666, CVE-2025-39964, CVE-2025-39993,
CVE-2025-40018)

Update instructions:

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

Ubuntu 24.04 LTS
  linux-image-6.8.0-1021-xilinx   6.8.0-1021.22
  linux-image-xilinx              6.8.0.1021.22
  linux-image-xilinx-6.8          6.8.0.1021.22
  linux-image-xilinx-zynqmp       6.8.0.1021.22

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-7931-4
  https://ubuntu.com/security/notices/USN-7931-3
  https://ubuntu.com/security/notices/USN-7931-2
  https://ubuntu.com/security/notices/USN-7931-1
  CVE-2025-37958, CVE-2025-38666, CVE-2025-39964, CVE-2025-39993,
  CVE-2025-40018

Package Information:
  https://launchpad.net/ubuntu/+source/linux-xilinx/6.8.0-1021.22

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