CVE-2026-23250 xfs: check return value of xchk_scrub_create_subord

Medium 5.5 Published Updated

A missing null pointer check in the XFS filesystem scrubber can cause a kernel crash, leading to denial of service.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Local or same network only
Victim action needed
Not needed
Fix
Available

What is CVE-2026-23250?

CVE-2026-23250 is a medium-severity vulnerability in Linux kernel, published on 18 Mar 2026. 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:

xfs: check return value of xchk_scrub_create_subord

Fix this function to return NULL instead of a mangled ENOMEM, then fix the callers to actually check for a null pointer and return ENOMEM. Most of the corrections here are for code merged between 6.2 and 6.10.

Weakness: CWE-476

Which versions are affected by CVE-2026-23250?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2026-23250?

Apply the vendor's patch.

Is CVE-2026-23250 being exploited?

There is no known exploitation of CVE-2026-23250 in the wild and no public exploit code.

All Linux kernel vulnerabilities

Sources

Also known as BELL-CVE-2026-23250, DEBIAN-CVE-2026-23250, GHSA-g9h3-f67f-jqj7, ROOT-OS-DEBIAN-13-CVE-2026-23250, UBUNTU-CVE-2026-23250.

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