# sunrpc: init gssp_lock before publishing proc entry

CVE record · `CVE-2026-89540`

- **Identifiers:** `CVE-2026-89540`
- **State:** Confirmed
- **Severity:** CVSS 7.8 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: `030d794bf49855f5e2a9e8dfbfad34211d1eb08b to before 159a4fab7170badd6c4a553aef81cac079d6f4ee` (git)
  - affected: `030d794bf49855f5e2a9e8dfbfad34211d1eb08b to before b3526ae3351968f6726bcbe25d8d09973ad79109` (git)
  - affected: `030d794bf49855f5e2a9e8dfbfad34211d1eb08b to before 7f5bcdc8da15077ebe846c2756a5a17741021410` (git)
  - affected: `030d794bf49855f5e2a9e8dfbfad34211d1eb08b to before 89c8e0733e8c46b7973503f15b1b31a8587d8030` (git)
  - affected: `030d794bf49855f5e2a9e8dfbfad34211d1eb08b to before f15b87521168c2a92cb1931f532cba422f856f01` (git)
  - affected: `030d794bf49855f5e2a9e8dfbfad34211d1eb08b to before edeefb111d6181a4aa278f415b005efe284b9489` (git)
  - affected: `030d794bf49855f5e2a9e8dfbfad34211d1eb08b to before 3f019571928b269feebcff59926ec13294215e0e` (git)
  - affected: `030d794bf49855f5e2a9e8dfbfad34211d1eb08b to before 5ce1ed6159731a41fdd0b03eedbed4e147036a5a` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `3.10`
  - unaffected: `before 3.10` (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: `6.12.109 to 6.12.*, inclusive` (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

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

- **CISA KEV:** Not listed.
- **EPSS:** 0.0013, the 2nd 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-2026-89540](https://www.cve.org/CVERecord?id=CVE-2026-89540)
- [NVD: CVE-2026-89540](https://nvd.nist.gov/vuln/detail/CVE-2026-89540)

### References from the CNA

- <https://git.kernel.org/stable/c/159a4fab7170badd6c4a553aef81cac079d6f4ee>
- <https://git.kernel.org/stable/c/b3526ae3351968f6726bcbe25d8d09973ad79109>
- <https://git.kernel.org/stable/c/7f5bcdc8da15077ebe846c2756a5a17741021410>
- <https://git.kernel.org/stable/c/89c8e0733e8c46b7973503f15b1b31a8587d8030>
- <https://git.kernel.org/stable/c/f15b87521168c2a92cb1931f532cba422f856f01>
- <https://git.kernel.org/stable/c/edeefb111d6181a4aa278f415b005efe284b9489>
- <https://git.kernel.org/stable/c/3f019571928b269feebcff59926ec13294215e0e>
- <https://git.kernel.org/stable/c/5ce1ed6159731a41fdd0b03eedbed4e147036a5a>

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-2026-89540>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-89540/>. Everything for agents: <https://agentprime.io/llms.txt>.