# power: supply: cros_usbpd-charger: bound the EC-reported port count

CVE record · `CVE-2026-89471`

- **Identifiers:** `CVE-2026-89471`
- **State:** Confirmed
- **Severity:** CVSS 8.4 High
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 11 Sept 2026
- **Updated:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 11 Sept 2026, 19:43 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: `f68b883e8fad23ed0ac4756d91594809d78678ed to before 0b5096f6804161b61451b1cec0e38678630be849` (git)
  - affected: `f68b883e8fad23ed0ac4756d91594809d78678ed to before c46c9f447415ca802afab51dea1eafc08ddff1c6` (git)
  - affected: `f68b883e8fad23ed0ac4756d91594809d78678ed to before a1905375dfc0b9612bbee52fc066e3a70c0d671d` (git)
  - affected: `f68b883e8fad23ed0ac4756d91594809d78678ed to before 2746d502b12b343384fb747bdef9cbcfbd7444a2` (git)
  - affected: `f68b883e8fad23ed0ac4756d91594809d78678ed to before fd29d08ee487f3bf50f2575aaa74f78a74b09b21` (git)
  - affected: `f68b883e8fad23ed0ac4756d91594809d78678ed to before 78be8b7403ff7638162438b664a07d19da76059e` (git)
  - affected: `f68b883e8fad23ed0ac4756d91594809d78678ed to before 3d1e01443b221081258ff34ea0cdd0431e4ff62e` (git)
  - affected: `f68b883e8fad23ed0ac4756d91594809d78678ed to before 48355ce49359740f52e94d3623f6fc557ce341f0` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `4.19`
  - unaffected: `before 4.19` (semver)
  - unaffected: `5.10.270 to 5.10.*, inclusive` (semver)
  - unaffected: `5.15.221 to 5.15.*, inclusive` (semver)
  - unaffected: `6.1.188 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

- 8.4 High, CVSS 3.1: `CVSS:3.1/AV:L/AC:L/PR:N/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

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-2026-89471](https://www.cve.org/CVERecord?id=CVE-2026-89471)
- [NVD: CVE-2026-89471](https://nvd.nist.gov/vuln/detail/CVE-2026-89471)

### References from the CNA

- <https://git.kernel.org/stable/c/0b5096f6804161b61451b1cec0e38678630be849>
- <https://git.kernel.org/stable/c/c46c9f447415ca802afab51dea1eafc08ddff1c6>
- <https://git.kernel.org/stable/c/a1905375dfc0b9612bbee52fc066e3a70c0d671d>
- <https://git.kernel.org/stable/c/2746d502b12b343384fb747bdef9cbcfbd7444a2>
- <https://git.kernel.org/stable/c/fd29d08ee487f3bf50f2575aaa74f78a74b09b21>
- <https://git.kernel.org/stable/c/78be8b7403ff7638162438b664a07d19da76059e>
- <https://git.kernel.org/stable/c/3d1e01443b221081258ff34ea0cdd0431e4ff62e>
- <https://git.kernel.org/stable/c/48355ce49359740f52e94d3623f6fc557ce341f0>

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-2026-89471>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-89471/>. Everything for agents: <https://agentprime.io/llms.txt>.