Ubuntu alert USN-8015-5 (linux-lowlatency, linux-xilinx)

From:
             
 
Rodrigo Figueiredo Zaiden <rodrigo.zaiden@canonical.com>
To:
             
 
ubuntu-security-announce@lists.ubuntu.com
Subject:
             
 
[USN-8015-5] Linux kernel vulnerabilities
Date:
             
 
Fri, 20 Feb 2026 11:31:44 -0300
Message-ID:
             
 
<6cb4006f-4c98-4c2a-ab7c-58853c4e0bd4@canonical.com>
==========================================================================
Ubuntu Security Notice USN-8015-5
February 20, 2026

linux-lowlatency, 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-lowlatency: Linux low latency kernel
- 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;
   - SMB network file system;
   - io_uring subsystem;
(CVE-2025-38561, CVE-2025-39698, CVE-2025-40019)

Update instructions:

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

Ubuntu 24.04 LTS
   linux-image-6.8.0-1022-xilinx   6.8.0-1022.23
   linux-image-6.8.0-94-lowlatency  6.8.0-94.96.1
   linux-image-6.8.0-94-lowlatency-64k  6.8.0-94.96.1
   linux-image-lowlatency          6.8.0-94.96.1
   linux-image-lowlatency-6.8      6.8.0-94.96.1
   linux-image-lowlatency-64k      6.8.0-94.96.1
   linux-image-lowlatency-64k-6.8  6.8.0-94.96.1
   linux-image-xilinx              6.8.0.1022.23
   linux-image-xilinx-6.8          6.8.0.1022.23
   linux-image-xilinx-zynqmp       6.8.0.1022.23

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-8015-5
   https://ubuntu.com/security/notices/USN-8015-4
   https://ubuntu.com/security/notices/USN-8015-3
   https://ubuntu.com/security/notices/USN-8015-2
   https://ubuntu.com/security/notices/USN-8015-1
   CVE-2025-38561, CVE-2025-39698, CVE-2025-40019

Package Information:
   https://launchpad.net/ubuntu/+source/linux-lowlatency/6.8...
   https://launchpad.net/ubuntu/+source/linux-xilinx/6.8.0-1...



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