---
id: CVE-2026-89474
title: >-
  kernel: power: supply: bq256xx: drain usb_work before freeing the charger
  (CVE-2026-89474)
summary: >-
  A flaw was found in the Linux kernel's power supply subsystem, specifically
  within the bq256xx driver. This vulnerability occurs when a USB work item
  attempts to access a charger object after it has been freed. This timing issue
  can lead t…
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-825
vendor: Red Hat
product: Red Hat OpenShift Container Platform 4
affected:
  - openshift_container_platform 4
published: '2026-09-11'
updated: '2026-09-16'
sourceUpdated: '2026-09-16T08:40:12+00:00'
source: CSAF
sourceUrl: 'https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89474.json'
references:
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89474.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-89474'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2532371'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-89474'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-89474'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-89474.mbox
  - url: 'https://git.kernel.org/stable/c/2dd6cd823777bea6d9a880a12a92a73ec76aee0b'
  - url: 'https://git.kernel.org/stable/c/9a467bd1e6811011026ad4c8de701b940d88a00c'
  - url: 'https://git.kernel.org/stable/c/9e1aba34df9a87d53460888e05718717c0f69343'
  - url: 'https://git.kernel.org/stable/c/c8addb842ae8dcf69c15fc976e33e3bd538a41d7'
  - url: 'https://git.kernel.org/stable/c/9dcfdf6c598301b278f0b3490eb2bf4f600524e2'
  - url: 'https://git.kernel.org/stable/c/fd08d4dbbec07a44f01b0ddb041912be0dc88f8c'
  - url: 'https://git.kernel.org/stable/c/2cfb59dc9df8b5ebdd95e3d874a7f4690cee2bc8'
tags:
  - csaf
  - vex
  - red-hat
  - cve.org
epss: 0.00172
epssPercentile: 0.06966
ingestedAt: '2026-09-14T15:23:07.453Z'
---

## Overview

A flaw was found in the Linux kernel's power supply subsystem, specifically within the bq256xx driver. This vulnerability occurs when a USB work item attempts to access a charger object after it has been freed. This timing issue can lead to a use-after-free condition, potentially causing system instability or a denial of service.

## Vendor advisories

- **Red Hat VEX** · Moderate · updated 2026-09-16 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89474.json)

**kernel: power: supply: bq256xx: drain usb_work before freeing the charger** — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-09-16.

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.