# af_unix: Return immediately when manage_oob() returns NULL for 0-length buffer.

CVE record · `CVE-2026-98394`

- **Identifiers:** `CVE-2026-98394`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 14 Oct 2026
- **Updated:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 14 Oct 2026, 13:25 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: `314001f0bf927015e459c9d387d62a231fe93af3 to before 3d3c7a3df66b2ca3d2cd1a2a0c37eb701feba713` (git)
  - affected: `314001f0bf927015e459c9d387d62a231fe93af3 to before d5dd55b316ca229a4cbf11729483ba5bb57233e7` (git)
  - affected: `314001f0bf927015e459c9d387d62a231fe93af3 to before c81c5be3826c8467945b964d0cf7f7b3d65461db` (git)
  - affected: `314001f0bf927015e459c9d387d62a231fe93af3 to before 6e5ee08eb5858d175da6768d75d163817b6a9d4a` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `5.15`
  - unaffected: `before 5.15` (semver)
  - unaffected: `6.12.111 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.53 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.7 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

No source has published a CVSS score for this record yet.

- **CISA KEV:** Not listed.
- **EPSS:** 0.0020, the 9th percentile, on 10 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 14 Oct 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-98394](https://www.cve.org/CVERecord?id=CVE-2026-98394)
- [NVD: CVE-2026-98394](https://nvd.nist.gov/vuln/detail/CVE-2026-98394)

### References from the CNA

- <https://git.kernel.org/stable/c/3d3c7a3df66b2ca3d2cd1a2a0c37eb701feba713>
- <https://git.kernel.org/stable/c/d5dd55b316ca229a4cbf11729483ba5bb57233e7>
- <https://git.kernel.org/stable/c/c81c5be3826c8467945b964d0cf7f7b3d65461db>
- <https://git.kernel.org/stable/c/6e5ee08eb5858d175da6768d75d163817b6a9d4a>

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-2026-98394>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-98394/>. Everything for agents: <https://agentprime.io/llms.txt>.