---
id: CVE-2026-89475
title: 'kernel: power: supply: bq24257: fix use-after-free on remove (CVE-2026-89475)'
summary: >-
  A flaw was found in the Linux kernel. A use-after-free vulnerability exists in
  the `bq24257` power supply driver. This issue occurs when the STAT-pin
  interrupt handler attempts to reschedule work and access memory that has
  already been fre…
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: '2026-09-18'
sourceUpdated: '2026-09-18T21:13:38+00:00'
source: CSAF
sourceUrl: 'https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89475.json'
references:
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89475.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-89475'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2532090'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-89475'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-89475'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-89475.mbox
  - url: 'https://git.kernel.org/stable/c/9d77fd7dd9a3ad57f7655c5264b503b85adbb7b8'
  - url: 'https://git.kernel.org/stable/c/a279e64c907f5638bb34cb8e2c9285798cf5f690'
  - url: 'https://git.kernel.org/stable/c/6d2eb93975c07b0169a3287efc1ae3b60cf52d8e'
  - url: 'https://git.kernel.org/stable/c/861ec73ce86e2ca18082cc7be4f140a5bbdf1428'
  - url: 'https://git.kernel.org/stable/c/f495808cdd6d9576965787cf6d9737d0b0e86b73'
  - url: 'https://git.kernel.org/stable/c/47ccbad210f48721c30d69d65b83dc9fff919ca9'
  - url: 'https://git.kernel.org/stable/c/9d34c9d660c3d0931d2cc749c46c47cf31f96e48'
tags:
  - csaf
  - vex
  - red-hat
  - cve.org
epss: 0.00205
epssPercentile: 0.10899
ingestedAt: '2026-09-14T15:23:07.453Z'
---

## Overview

A flaw was found in the Linux kernel. A use-after-free vulnerability exists in the `bq24257` power supply driver. This issue occurs when the STAT-pin interrupt handler attempts to reschedule work and access memory that has already been freed during the device removal process. This can lead to system instability or a denial of service (DoS).

## Vendor advisories

- **Red Hat VEX** · Moderate · updated 2026-09-18 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89475.json)

**kernel: power: supply: bq24257: fix use-after-free on remove** — 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.