# sctp: close UDP tunnel sockets during netns teardown

CVE record · `CVE-2026-68161`

- **Identifiers:** `CVE-2026-68161`
- **State:** Confirmed
- **Severity:** CVSS 9.8 Critical
- **Critical:** Yes: CVSS 9+
- **CNA:** Linux
- **Weakness (CWE):** [CWE-404](https://cwe.mitre.org/data/definitions/404.html)
- **Tags:** [Denial of service](https://agentprime.io/advisories/tag/dos.md)
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 10 Aug 2026
- **Updated:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 10 Aug 2026, 11:59 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.

## Critical

Critical, because:

- CVSS score 9.8: 9.0 or more.

How we decide what’s critical: <https://agentprime.io/advisories/critical.md>

## Affected products, as the CNA wrote them

- Vendor: Linux. Product: Linux.
  - affected: `046c052b475e7119b6a30e3483e2888fc606a2f8 to before c29affd44e6769e3073235d4b471d9b501fa8166` (git)
  - affected: `046c052b475e7119b6a30e3483e2888fc606a2f8 to before c6eb2d615210b80339548ab07c0230edaab9a6c7` (git)
  - affected: `046c052b475e7119b6a30e3483e2888fc606a2f8 to before 8ff78591d309c50a4fdab683b68dd8d512a270dd` (git)
  - affected: `046c052b475e7119b6a30e3483e2888fc606a2f8 to before 3bf0e349cbb4f975f35eb22753acc346b89c66a0` (git)
  - affected: `046c052b475e7119b6a30e3483e2888fc606a2f8 to before 37ff9794be48d0caa37687e04d09675f9c849121` (git)
  - affected: `046c052b475e7119b6a30e3483e2888fc606a2f8 to before ffb2bd7ade36ec4da32c46a6eddbf4515316d08c` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `5.11`
  - unaffected: `before 5.11` (semver)
  - unaffected: `6.1.189 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.151 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.101 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.42 to 6.18.*, inclusive` (semver)
  - unaffected: `7.1.6 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

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

- **CISA KEV:** Not listed.
- **EPSS:** 0.0068, the 53rd 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 10 Aug 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-68161](https://www.cve.org/CVERecord?id=CVE-2026-68161)
- [NVD: CVE-2026-68161](https://nvd.nist.gov/vuln/detail/CVE-2026-68161)

### References from the CNA

- <https://git.kernel.org/stable/c/c29affd44e6769e3073235d4b471d9b501fa8166>
- <https://git.kernel.org/stable/c/c6eb2d615210b80339548ab07c0230edaab9a6c7>
- <https://git.kernel.org/stable/c/8ff78591d309c50a4fdab683b68dd8d512a270dd>
- <https://git.kernel.org/stable/c/3bf0e349cbb4f975f35eb22753acc346b89c66a0>
- <https://git.kernel.org/stable/c/37ff9794be48d0caa37687e04d09675f9c849121>
- <https://git.kernel.org/stable/c/ffb2bd7ade36ec4da32c46a6eddbf4515316d08c>

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-2026-68161>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-68161/>. Everything for agents: <https://agentprime.io/llms.txt>.