CVE-2026-23251 xfs: only call xf{array,blob}_destroy if we have a valid pointer

What is CVE-2026-23251?

CVE-2026-23251 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: only call xf{array,blob}_destroy if we have a valid pointer

Only call the xfarray and xfblob destructor if we have a valid pointer, and be sure to null out that pointer afterwards. Note that this patch fixes a large number of commits, most of which were merged between 6.9 and 6.10.

Weakness: CWE-476

Which versions are affected by CVE-2026-23251?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2026-23251?

Apply the vendor's patch.

Is CVE-2026-23251 being exploited?

There is no known exploitation of CVE-2026-23251 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BELL-CVE-2026-23251, DEBIAN-CVE-2026-23251, GHSA-h6jp-94m7-xf6p, ROOT-OS-DEBIAN-13-CVE-2026-23251, UBUNTU-CVE-2026-23251.