# NFSv4.2: fix LAYOUTSTATS send buffer exhaustion

CVE record · `CVE-2026-90103`

- **Identifiers:** `CVE-2026-90103`
- **State:** Confirmed
- **Severity:** CVSS 7.5 High
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 17 Sept 2026
- **Updated:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 17 Sept 2026, 16:06 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: `27c430644369ccd9a2272492ba6d0e85e2e4800b to before 842ac26615424577f24f0486b9d3bf97f28fad9c` (git)
  - affected: `27c430644369ccd9a2272492ba6d0e85e2e4800b to before 397aa7000bbf6b6a0d32e66a544e978fb478c8e4` (git)
  - affected: `27c430644369ccd9a2272492ba6d0e85e2e4800b to before e82d7d999fe9f893f84bf332fd39cb5d9de7128f` (git)
  - affected: `27c430644369ccd9a2272492ba6d0e85e2e4800b to before 5aca000630c0fd0da102ae1abf9245dd74f2ce36` (git)
  - affected: `27c430644369ccd9a2272492ba6d0e85e2e4800b to before cb11590c7ddc6883a1b1d70b1f98b2779fe626f2` (git)
  - affected: `27c430644369ccd9a2272492ba6d0e85e2e4800b to before 3815b894b922e9b4f40b8b6f6d67bf80d44141c9` (git)
  - affected: `27c430644369ccd9a2272492ba6d0e85e2e4800b to before a973622da0c62c34043ddbbf382cd761b03e5136` (git)
  - affected: `27c430644369ccd9a2272492ba6d0e85e2e4800b to before c75ef2137e749f2673f0617cfdaae53b2bb7195a` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `4.2`
  - unaffected: `before 4.2` (semver)
  - unaffected: `5.10.270 to 5.10.*, inclusive` (semver)
  - unaffected: `5.15.221 to 5.15.*, inclusive` (semver)
  - unaffected: `6.1.188 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.157 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.110 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.52 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.6 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

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

- **CISA KEV:** Not listed.
- **EPSS:** 0.0070, the 53rd percentile, on 13 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 17 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-90103](https://www.cve.org/CVERecord?id=CVE-2026-90103)
- [NVD: CVE-2026-90103](https://nvd.nist.gov/vuln/detail/CVE-2026-90103)

### References from the CNA

- <https://git.kernel.org/stable/c/842ac26615424577f24f0486b9d3bf97f28fad9c>
- <https://git.kernel.org/stable/c/397aa7000bbf6b6a0d32e66a544e978fb478c8e4>
- <https://git.kernel.org/stable/c/e82d7d999fe9f893f84bf332fd39cb5d9de7128f>
- <https://git.kernel.org/stable/c/5aca000630c0fd0da102ae1abf9245dd74f2ce36>
- <https://git.kernel.org/stable/c/cb11590c7ddc6883a1b1d70b1f98b2779fe626f2>
- <https://git.kernel.org/stable/c/3815b894b922e9b4f40b8b6f6d67bf80d44141c9>
- <https://git.kernel.org/stable/c/a973622da0c62c34043ddbbf382cd761b03e5136>
- <https://git.kernel.org/stable/c/c75ef2137e749f2673f0617cfdaae53b2bb7195a>

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-2026-90103>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-90103/>. Everything for agents: <https://agentprime.io/llms.txt>.