CVE-2025-68225 lib/test_kho: check if KHO is enabled

Not scored Published 16 Dec 2025 Updated 11 May 2026

A missing check for KHO enablement in the Linux kernel test module can cause a null pointer dereference and system crash.

Exploited in the wild: Not known
Login needed: An administrator
Attackable: Local or same network only
Victim action needed: Not needed
Fix: Available

What is CVE-2025-68225?

CVE-2025-68225 is a vulnerability in Linux, published on 16 Dec 2025. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

In the Linux kernel, the following vulnerability has been resolved:

lib/test_kho: check if KHO is enabled

We must check whether KHO is enabled prior to issuing KHO commands, otherwise KHO internal data structures are not initialized.

Which versions are affected by CVE-2025-68225?

How do I fix CVE-2025-68225?

Apply the vendor's patch.

Is CVE-2025-68225 being exploited?

There is no known exploitation of CVE-2025-68225 in the wild and no public exploit code.

Sources

Also known as BELL-CVE-2025-68225, DEBIAN-CVE-2025-68225, GHSA-gqx9-7j62-c44h, UBUNTU-CVE-2025-68225.