# usb: typec: tcpci_rt1711h: unregister TCPCI port with devres

CVE record · `CVE-2026-64463`

- **Identifiers:** `CVE-2026-64463`
- **State:** Confirmed
- **Severity:** CVSS 7.8 High
- **Critical:** No
- **CNA:** Linux
- **Weakness (CWE):** [CWE-401](https://cwe.mitre.org/data/definitions/401.html)
- **Tags:** [Denial of service](https://agentprime.io/advisories/tag/dos.md)
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 25 Jul 2026
- **Updated:** 30 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 25 Jul 2026, 08:51 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: `302c570bf36e997d55ad0d60628a2feec76954a4 to before 388f5354158fc038214b73baad43a723385fea1e` (git)
  - affected: `302c570bf36e997d55ad0d60628a2feec76954a4 to before ce2e36e8759dfbfe546723810c306f42f484866d` (git)
  - affected: `302c570bf36e997d55ad0d60628a2feec76954a4 to before 94b1abf1af94aa5a355e9f03675e07bccfc41c4b` (git)
  - affected: `302c570bf36e997d55ad0d60628a2feec76954a4 to before e5406c8fb71cd2f89a46300a746f6e7972e621e8` (git)
  - affected: `302c570bf36e997d55ad0d60628a2feec76954a4 to before 569f18a83eed0b0be4615f0c7bed40fb5c50e2e6` (git)
  - affected: `302c570bf36e997d55ad0d60628a2feec76954a4 to before e8da46d99d3710106e7c44db14566bf9b57386b5` (git)
  - affected: `4309ab96ab744703871e35d829177dd9347bf643` (git)
  - affected: `895ec8c86e13f85b119c71d5f95491b48867955e` (git)
  - affected: `745dcedb896a740825160228f98dbb5725a49f85` (git)
  - affected: `4.19.131 to before 4.20` (semver)
  - affected: `5.4.50 to before 5.5` (semver)
  - affected: `5.7.7 to before 5.8` (semver)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `5.8`
  - unaffected: `before 5.8` (semver)
  - unaffected: `6.1.191 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.145 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.96 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.39 to 6.18.*, inclusive` (semver)
  - unaffected: `7.1.4 to 7.1.*, inclusive` (semver)
  - unaffected: `7.2 to *, inclusive` (original_commit_for_fix)
  - Other versions: affected

## Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

> Linux kernel versions from 5.8 until the fix are affected: the tcpci_rt1711h USB Type-C driver can leave its TCPCI port registered when probe fails after registration. The source gives few details on what an attacker needs or can do. Upgrade to 6.1.191, 6.6.145, 6.12.96, 6.18.39, or a later release in the same series.

Written 12 Nov 2026.

## 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

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

- **CISA KEV:** Not listed.
- **EPSS:** 0.0014, the 3rd percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 25 Jul 2026, 10:17 UTC: [Confirmed by NVD](https://nvd.nist.gov/vuln/detail/CVE-2026-64463)

## Sources

- [CVE List: CVE-2026-64463](https://www.cve.org/CVERecord?id=CVE-2026-64463)
- [NVD: CVE-2026-64463](https://nvd.nist.gov/vuln/detail/CVE-2026-64463)

### References from the CNA

- <https://git.kernel.org/stable/c/388f5354158fc038214b73baad43a723385fea1e>
- <https://git.kernel.org/stable/c/ce2e36e8759dfbfe546723810c306f42f484866d>
- <https://git.kernel.org/stable/c/94b1abf1af94aa5a355e9f03675e07bccfc41c4b>
- <https://git.kernel.org/stable/c/e5406c8fb71cd2f89a46300a746f6e7972e621e8>
- <https://git.kernel.org/stable/c/569f18a83eed0b0be4615f0c7bed40fb5c50e2e6>
- <https://git.kernel.org/stable/c/e8da46d99d3710106e7c44db14566bf9b57386b5>

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-2026-64463>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-64463/>. Everything for agents: <https://agentprime.io/llms.txt>.