# net: thunderbolt: Mark the connection down when bringing it up fails

CVE record · `CVE-2026-80989`

- **Identifiers:** `CVE-2026-80989`
- **State:** Confirmed
- **Severity:** CVSS 8.8 High
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 11 Sept 2026
- **Updated:** 30 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 11 Sept 2026, 19:42 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: `e69b6c02b4c3b8d03be7136f90dd9551ad5a5a5e to before c18f4ce9e2cb8836c302ef30a1e3392a0233c7b3` (git)
  - affected: `e69b6c02b4c3b8d03be7136f90dd9551ad5a5a5e to before e0d4a17afde5aa0045dc3e1d66c6bb80927bad8c` (git)
  - affected: `e69b6c02b4c3b8d03be7136f90dd9551ad5a5a5e to before ed1d6e3d735e7b03f43a02f4306c89eb7663da14` (git)
  - affected: `e69b6c02b4c3b8d03be7136f90dd9551ad5a5a5e to before f01e6a35c440b62f060e21f36b385e574a7f308c` (git)
  - affected: `e69b6c02b4c3b8d03be7136f90dd9551ad5a5a5e to before d6c0af293129345a17dc31c9b4179dc7f3d6af7a` (git)
  - affected: `e69b6c02b4c3b8d03be7136f90dd9551ad5a5a5e to before 3c8b26ebf525ba5960510f48c6e9936a79ebe76f` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `4.15`
  - unaffected: `before 4.15` (semver)
  - unaffected: `6.1.191 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

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

- **CISA KEV:** Not listed.
- **EPSS:** 0.0035, the 28th 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-2026-80989](https://www.cve.org/CVERecord?id=CVE-2026-80989)
- [NVD: CVE-2026-80989](https://nvd.nist.gov/vuln/detail/CVE-2026-80989)

### References from the CNA

- <https://git.kernel.org/stable/c/c18f4ce9e2cb8836c302ef30a1e3392a0233c7b3>
- <https://git.kernel.org/stable/c/e0d4a17afde5aa0045dc3e1d66c6bb80927bad8c>
- <https://git.kernel.org/stable/c/ed1d6e3d735e7b03f43a02f4306c89eb7663da14>
- <https://git.kernel.org/stable/c/f01e6a35c440b62f060e21f36b385e574a7f308c>
- <https://git.kernel.org/stable/c/d6c0af293129345a17dc31c9b4179dc7f3d6af7a>
- <https://git.kernel.org/stable/c/3c8b26ebf525ba5960510f48c6e9936a79ebe76f>

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-2026-80989>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

---

The web page: <https://agentprime.io/advisories/CVE-2026-80989/>. Everything for agents: <https://agentprime.io/llms.txt>.