# nfsd: avoid leaking pre-allocated openowner on unconfirmed retry race

CVE record · `CVE-2026-53394`

- **Identifiers:** `CVE-2026-53394`
- **State:** Confirmed
- **Severity:** CVSS 7.5 High
- **Critical:** No
- **CNA:** Linux
- **Weakness (CWE):** [CWE-401](https://cwe.mitre.org/data/definitions/401.html)
- **Tags:** [Denial of service](https://agentprime.io/advisories/tag/dos.md)
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 19 Jul 2026
- **Updated:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 19 Jul 2026, 12:01 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: `23df17788c6212809848f836b10c4f85b16843a5 to before c9aefb2b5f11337c9202c5bd0c45d71198449718` (git)
  - affected: `23df17788c6212809848f836b10c4f85b16843a5 to before 017a6150106b054cc84d1b0582d97bd3a74d4281` (git)
  - affected: `23df17788c6212809848f836b10c4f85b16843a5 to before a10bf67fe06469a71a401f72f328237345d553c0` (git)
  - affected: `23df17788c6212809848f836b10c4f85b16843a5 to before 57aee7a35bb12753057c5b65d72d1f46c0e95b07` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `6.10`
  - unaffected: `before 6.10` (semver)
  - unaffected: `6.12.95 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.38 to 6.18.*, inclusive` (semver)
  - unaffected: `7.1.3 to 7.1.*, inclusive` (semver)
  - unaffected: `7.2 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:** 0.0063, the 50th percentile, on 15 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 19 Jul 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-53394](https://www.cve.org/CVERecord?id=CVE-2026-53394)
- [NVD: CVE-2026-53394](https://nvd.nist.gov/vuln/detail/CVE-2026-53394)

### References from the CNA

- <https://git.kernel.org/stable/c/c9aefb2b5f11337c9202c5bd0c45d71198449718>
- <https://git.kernel.org/stable/c/017a6150106b054cc84d1b0582d97bd3a74d4281>
- <https://git.kernel.org/stable/c/a10bf67fe06469a71a401f72f328237345d553c0>
- <https://git.kernel.org/stable/c/57aee7a35bb12753057c5b65d72d1f46c0e95b07>

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-2026-53394>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-53394/>. Everything for agents: <https://agentprime.io/llms.txt>.