# usb: xhci: bail out of setup if the controller is inaccessible

CVE record · `CVE-2026-80861`

- **Identifiers:** `CVE-2026-80861`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 4 Sept 2026
- **Updated:** 30 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 4 Sept 2026, 15:55 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: `66d4eadd8d067269ea8fead1a50fe87c2979a80d to before 9f8b403d5f8c1ac361533c73fa449153a3c7fc6c` (git)
  - affected: `66d4eadd8d067269ea8fead1a50fe87c2979a80d to before 15e62f969fecf459a0b873004cc5f4c5a6ba5fcc` (git)
  - affected: `66d4eadd8d067269ea8fead1a50fe87c2979a80d to before 99e78b54cc3d70e008bd1a30d43e13d652c773e0` (git)
  - affected: `66d4eadd8d067269ea8fead1a50fe87c2979a80d to before 301f4a3303b21ea959a8294518ee883710498ac2` (git)
  - affected: `66d4eadd8d067269ea8fead1a50fe87c2979a80d to before 70706dbcf122940f4e3595d7ba1445004cc00074` (git)
  - affected: `66d4eadd8d067269ea8fead1a50fe87c2979a80d to before c051f66b621695ad7c8438a9497d79e1f4f05edb` (git)
  - affected: `66d4eadd8d067269ea8fead1a50fe87c2979a80d to before bf84c6b0264947794fa783c324a6d874ca6657d8` (git)
  - affected: `66d4eadd8d067269ea8fead1a50fe87c2979a80d to before 0b31744f70c5e06cce5fb660e02d057a3b9e0e37` (git)
  - affected: `66d4eadd8d067269ea8fead1a50fe87c2979a80d to before 78203d5b54a40f0e36196ebf31c9c7a380fc8811` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `2.6.31`
  - unaffected: `before 2.6.31` (semver)
  - unaffected: `5.10.273 to 5.10.*, inclusive` (semver)
  - unaffected: `5.15.224 to 5.15.*, inclusive` (semver)
  - unaffected: `6.1.191 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.158 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.111 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.51 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:** 0.0018, the 7th 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 4 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-80861](https://www.cve.org/CVERecord?id=CVE-2026-80861)
- [NVD: CVE-2026-80861](https://nvd.nist.gov/vuln/detail/CVE-2026-80861)

### References from the CNA

- <https://git.kernel.org/stable/c/9f8b403d5f8c1ac361533c73fa449153a3c7fc6c>
- <https://git.kernel.org/stable/c/15e62f969fecf459a0b873004cc5f4c5a6ba5fcc>
- <https://git.kernel.org/stable/c/99e78b54cc3d70e008bd1a30d43e13d652c773e0>
- <https://git.kernel.org/stable/c/301f4a3303b21ea959a8294518ee883710498ac2>
- <https://git.kernel.org/stable/c/70706dbcf122940f4e3595d7ba1445004cc00074>
- <https://git.kernel.org/stable/c/c051f66b621695ad7c8438a9497d79e1f4f05edb>
- <https://git.kernel.org/stable/c/bf84c6b0264947794fa783c324a6d874ca6657d8>
- <https://git.kernel.org/stable/c/0b31744f70c5e06cce5fb660e02d057a3b9e0e37>
- <https://git.kernel.org/stable/c/78203d5b54a40f0e36196ebf31c9c7a380fc8811>

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-2026-80861>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-80861/>. Everything for agents: <https://agentprime.io/llms.txt>.