# cxl/features: bound fwctl command payload to the input buffer

CVE record · `CVE-2026-89571`

- **Identifiers:** `CVE-2026-89571`
- **State:** Confirmed
- **Severity:** CVSS 7.1 High
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 11 Sept 2026
- **Updated:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 11 Sept 2026, 19:44 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

## Affected products, as the CNA wrote them

- Vendor: Linux. Product: Linux.
  - affected: `eb5dfcb9e36d0e46089fec777d911313c1876fa3 to before 14d52c15d5d99477b20a2d61fe36f347080da6cd` (git)
  - affected: `eb5dfcb9e36d0e46089fec777d911313c1876fa3 to before d8957545fe96f7905791c937758ebfc1ae1e5b17` (git)
  - affected: `eb5dfcb9e36d0e46089fec777d911313c1876fa3 to before f687394af983df5660b6afae7e0d06969f3af206` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `6.15`
  - unaffected: `before 6.15` (semver)
  - unaffected: `6.18.50 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.4 to 7.2.*, inclusive` (semver)
  - unaffected: `7.3 to *, inclusive` (original_commit_for_fix)
  - Other versions: affected

## Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

## Severity and exploitation

- 7.1 High, CVSS 3.1: `CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H`, from CNA (Linux)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0016, the 5th percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

This record came from the full history of the CVE Program, published 11 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-89571](https://www.cve.org/CVERecord?id=CVE-2026-89571)
- [NVD: CVE-2026-89571](https://nvd.nist.gov/vuln/detail/CVE-2026-89571)

### References from the CNA

- <https://git.kernel.org/stable/c/14d52c15d5d99477b20a2d61fe36f347080da6cd>
- <https://git.kernel.org/stable/c/d8957545fe96f7905791c937758ebfc1ae1e5b17>
- <https://git.kernel.org/stable/c/f687394af983df5660b6afae7e0d06969f3af206>

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.

## Check whether this affects you

This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it. Compare the affected versions above with what you run.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), `get_advisory` returns this record and `search_advisories` finds related ones. Setup: <https://agentprime.io/mcp.md>
- As JSON: <https://api.agentprime.io/v1/advisories/CVE-2026-89571>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-89571/>. Everything for agents: <https://agentprime.io/llms.txt>.