==========================================================================
Ubuntu Security Notice USN-8148-4
April 06, 2026

linux-realtime-6.17 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-realtime-6.17: 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:
   - Cryptographic API;
   - Netfilter;
   - Network traffic control;
(CVE-2026-23060, CVE-2026-23074, CVE-2026-23111)

Update instructions:

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

Ubuntu 24.04 LTS
   linux-image-6.17.0-1009-realtime  6.17.0-1009.10~24.04.1
                                   Available with Ubuntu Pro
   linux-image-realtime-6.17       6.17.0-1009.10~24.04.1
                                   Available with Ubuntu Pro
   linux-image-realtime-hwe-24.04  6.17.0-1009.10~24.04.1
                                   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-8148-4
   https://ubuntu.com/security/notices/USN-8148-3
   https://ubuntu.com/security/notices/USN-8148-2
   https://ubuntu.com/security/notices/USN-8148-1
   CVE-2026-23060, CVE-2026-23074, CVE-2026-23111

Package Information: