# futex: Prevent rcuwait use-after-free during requeue PI

CVE record · `CVE-2026-90003`

- **Identifiers:** `CVE-2026-90003`
- **State:** Confirmed
- **Severity:** CVSS 7.8 High
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 16 Sept 2026
- **Updated:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 16 Sept 2026, 10:33 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: `07d91ef510fb16a2e0ca7453222105835b7ba3b8 to before 220ee9e04ca3b7f014c000264aa6c884f036c86e` (git)
  - affected: `07d91ef510fb16a2e0ca7453222105835b7ba3b8 to before 81aadbd09bf1dcd3238212f336ba699503557ae8` (git)
  - affected: `07d91ef510fb16a2e0ca7453222105835b7ba3b8 to before 244f301759fd34b1dd0b4192ce44f8ef224e027d` (git)
  - affected: `07d91ef510fb16a2e0ca7453222105835b7ba3b8 to before 7d1559126d86be6e4f6a85663dfbfe85caa47e37` (git)
  - affected: `07d91ef510fb16a2e0ca7453222105835b7ba3b8 to before e4a4ccfa470f910b747b3ee8d18670ed8ac8a236` (git)
  - affected: `07d91ef510fb16a2e0ca7453222105835b7ba3b8 to before a3b8d46fe401cba3a5c46dea610e6eb3dc15370e` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `5.15`
  - unaffected: `before 5.15` (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: `6.18.51 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.5 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:** 0.0016, the 5th 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 16 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-90003](https://www.cve.org/CVERecord?id=CVE-2026-90003)
- [NVD: CVE-2026-90003](https://nvd.nist.gov/vuln/detail/CVE-2026-90003)

### References from the CNA

- <https://git.kernel.org/stable/c/220ee9e04ca3b7f014c000264aa6c884f036c86e>
- <https://git.kernel.org/stable/c/81aadbd09bf1dcd3238212f336ba699503557ae8>
- <https://git.kernel.org/stable/c/244f301759fd34b1dd0b4192ce44f8ef224e027d>
- <https://git.kernel.org/stable/c/7d1559126d86be6e4f6a85663dfbfe85caa47e37>
- <https://git.kernel.org/stable/c/e4a4ccfa470f910b747b3ee8d18670ed8ac8a236>
- <https://git.kernel.org/stable/c/a3b8d46fe401cba3a5c46dea610e6eb3dc15370e>

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-2026-90003>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-90003/>. Everything for agents: <https://agentprime.io/llms.txt>.