# xhci: dbgtty: Fix unregister on tty_register_driver() failure

CVE record · `CVE-2026-80923`

- **Identifiers:** `CVE-2026-80923`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 9 Sept 2026
- **Updated:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 9 Sept 2026, 16:19 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: `4521f16139409cdf9462c7325d43454462cff6c3 to before 01b7bc0938061f2fd46e0094f6483d8c6c02f7d3` (git)
  - affected: `4521f16139409cdf9462c7325d43454462cff6c3 to before 43635ff6401ca0e0ed21875379eeded921321525` (git)
  - affected: `4521f16139409cdf9462c7325d43454462cff6c3 to before eaca2814f32b9872a332326324b9e83e01f156d2` (git)
  - affected: `4521f16139409cdf9462c7325d43454462cff6c3 to before 943f976c93e70563b132f5585ff68b08c89641a2` (git)
  - affected: `4521f16139409cdf9462c7325d43454462cff6c3 to before 0d0faf3cc44c4d86fc6faf5cea972c0fbe00b922` (git)
  - affected: `4521f16139409cdf9462c7325d43454462cff6c3 to before 33ed35ca629477f57e0dd1d77d6df96cf5a9eb55` (git)
  - affected: `4521f16139409cdf9462c7325d43454462cff6c3 to before 0e469b94fbba8eb03666da41dd1082b793c50c1a` (git)
  - affected: `4521f16139409cdf9462c7325d43454462cff6c3 to before a916fa66a43e10f63198b6ce978badffc678821a` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `5.9`
  - unaffected: `before 5.9` (semver)
  - unaffected: `5.15.220 to 5.15.*, inclusive` (semver)
  - unaffected: `6.1.187 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.156 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.108 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.49 to 6.18.*, inclusive` (semver)
  - unaffected: `7.1.13 to 7.1.*, inclusive` (semver)
  - unaffected: `7.2.3 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:** 0.0016, the 5th 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 9 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-80923](https://www.cve.org/CVERecord?id=CVE-2026-80923)
- [NVD: CVE-2026-80923](https://nvd.nist.gov/vuln/detail/CVE-2026-80923)

### References from the CNA

- <https://git.kernel.org/stable/c/01b7bc0938061f2fd46e0094f6483d8c6c02f7d3>
- <https://git.kernel.org/stable/c/43635ff6401ca0e0ed21875379eeded921321525>
- <https://git.kernel.org/stable/c/eaca2814f32b9872a332326324b9e83e01f156d2>
- <https://git.kernel.org/stable/c/943f976c93e70563b132f5585ff68b08c89641a2>
- <https://git.kernel.org/stable/c/0d0faf3cc44c4d86fc6faf5cea972c0fbe00b922>
- <https://git.kernel.org/stable/c/33ed35ca629477f57e0dd1d77d6df96cf5a9eb55>
- <https://git.kernel.org/stable/c/0e469b94fbba8eb03666da41dd1082b793c50c1a>
- <https://git.kernel.org/stable/c/a916fa66a43e10f63198b6ce978badffc678821a>

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-2026-80923>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-80923/>. Everything for agents: <https://agentprime.io/llms.txt>.