---
id: CVE-2026-89471
title: >-
  kernel: power: supply: cros_usbpd-charger: bound the EC-reported port count
  (CVE-2026-89471)
summary: >-
  A flaw was found in the Linux kernel's `cros_usbpd-charger` driver. A
  malicious or compromised embedded controller (EC) can report an excessive
  number of USB Power Delivery (PD) ports. This causes the driver to write
  beyond the allocated m…
severity: medium
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cvssSource: vendor
cwe: CWE-787
vendor: Red Hat
product: Red Hat OpenShift Container Platform 4
affected:
  - openshift_container_platform 4
published: '2026-09-11'
updated: '2026-09-18'
sourceUpdated: '2026-09-18T21:10:58+00:00'
source: CSAF
sourceUrl: 'https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89471.json'
references:
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89471.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-89471'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2532398'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-89471'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-89471'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-89471.mbox
  - url: 'https://git.kernel.org/stable/c/0b5096f6804161b61451b1cec0e38678630be849'
  - url: 'https://git.kernel.org/stable/c/c46c9f447415ca802afab51dea1eafc08ddff1c6'
  - url: 'https://git.kernel.org/stable/c/a1905375dfc0b9612bbee52fc066e3a70c0d671d'
  - url: 'https://git.kernel.org/stable/c/2746d502b12b343384fb747bdef9cbcfbd7444a2'
  - url: 'https://git.kernel.org/stable/c/fd29d08ee487f3bf50f2575aaa74f78a74b09b21'
  - url: 'https://git.kernel.org/stable/c/78be8b7403ff7638162438b664a07d19da76059e'
  - url: 'https://git.kernel.org/stable/c/3d1e01443b221081258ff34ea0cdd0431e4ff62e'
  - url: 'https://git.kernel.org/stable/c/48355ce49359740f52e94d3623f6fc557ce341f0'
tags:
  - csaf
  - vex
  - red-hat
  - cve.org
  - score-dispute
epss: 0.00196
epssPercentile: 0.08234
scores:
  vendor: 5.5
  cna: 8.4
ingestedAt: '2026-09-14T15:23:07.453Z'
---

## Overview

A flaw was found in the Linux kernel's `cros_usbpd-charger` driver. A malicious or compromised embedded controller (EC) can report an excessive number of USB Power Delivery (PD) ports. This causes the driver to write beyond the allocated memory buffer when populating a fixed-size array for port data, leading to a slab out-of-bounds write. This memory corruption could potentially be exploited by a local attacker.

## Vendor advisories

- **Red Hat VEX** · Moderate · updated 2026-09-18 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89471.json)

**kernel: power: supply: cros_usbpd-charger: bound the EC-reported port count** — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-09-18.

Not affected:

- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Red Hat OpenShift Container Platform 4

## Remediation

Refer to the advisory for fix availability.