---
id: CVE-2026-89464
title: >-
  kernel: power: supply: twl4030_charger: cancel workers via devm
  (CVE-2026-89464)
summary: >-
  A flaw was found in the Linux kernel's `twl4030_charger` driver. When the
  driver's remove function is called, it fails to properly cancel pending worker
  tasks. This oversight allows a worker to attempt to access memory that has
  already bee…
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: '2026-09-17'
sourceUpdated: '2026-09-17T19:57:31+00:00'
source: CSAF
sourceUrl: 'https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89464.json'
references:
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89464.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-89464'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2532107'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-89464'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-89464'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-89464.mbox
  - url: 'https://git.kernel.org/stable/c/6eba34732524067da2aad5ddfdfbc641ded10e9e'
  - url: 'https://git.kernel.org/stable/c/72a2d6cd049f892853e4e2d8d8fc5e7d0244a458'
  - url: 'https://git.kernel.org/stable/c/a4460e89d4088cfec2da5be33e265ef1a8e780e9'
  - url: 'https://git.kernel.org/stable/c/b955da82db4170bdf1c784dc457287aa0c977378'
  - url: 'https://git.kernel.org/stable/c/9644c96ef8646c65d46caa5139a6631e29b79d6c'
  - url: 'https://git.kernel.org/stable/c/e9fffe10bd791082263c1678f2f6cdd6d7b487e0'
  - url: 'https://git.kernel.org/stable/c/c46c205bab0dfce4dd54aeb49da3f183e1fdfc63'
tags:
  - csaf
  - vex
  - red-hat
  - cve.org
epss: 0.00172
epssPercentile: 0.06965
ingestedAt: '2026-09-14T15:23:07.453Z'
---

## Overview

A flaw was found in the Linux kernel's `twl4030_charger` driver. When the driver's remove function is called, it fails to properly cancel pending worker tasks. This oversight allows a worker to attempt to access memory that has already been deallocated, leading to a use-after-free vulnerability. A local attacker could potentially exploit this to cause a denial of service.

## Vendor advisories

- **Red Hat VEX** · Moderate · updated 2026-09-17 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89464.json)

**kernel: power: supply: twl4030_charger: cancel workers via devm** — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-09-17.

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.