---
id: CVE-2026-89468
title: 'power: supply: lp8788-charger: fix use-after-free on remove'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  power: supply: lp8788-charger: fix use-after-free on remove

  lp8788_charger_remove() flushes charger_work before unregistering the
  IRQs. An IRQ thread can queue charger…
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-364
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 98a2766493589c18c327ae3dad5243b53fcb5f70 <
    4e3d3923976a986cc3cf960d13f1264cea8a9bba
  - >-
    Linux >= 98a2766493589c18c327ae3dad5243b53fcb5f70 <
    88d8eadfad5d9ff967e74090152940bcfa27df69
  - >-
    Linux >= 98a2766493589c18c327ae3dad5243b53fcb5f70 <
    b3aa1e9509e1b0a863353356d617fb45d1b6250a
  - >-
    Linux >= 98a2766493589c18c327ae3dad5243b53fcb5f70 <
    b4eb6a056b441ba0caedfbfc42cec501acf12f67
  - >-
    Linux >= 98a2766493589c18c327ae3dad5243b53fcb5f70 <
    831c29a12d560f8a3225f43050b3fbb5dfd79c66
  - Linux 3.7
published: '2026-09-11'
updated: '2026-10-21'
sourceUpdated: '2026-10-21T12:47:33.974Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-89468'
references:
  - url: 'https://git.kernel.org/stable/c/4e3d3923976a986cc3cf960d13f1264cea8a9bba'
  - url: 'https://git.kernel.org/stable/c/88d8eadfad5d9ff967e74090152940bcfa27df69'
  - url: 'https://git.kernel.org/stable/c/b3aa1e9509e1b0a863353356d617fb45d1b6250a'
  - url: 'https://git.kernel.org/stable/c/b4eb6a056b441ba0caedfbfc42cec501acf12f67'
  - url: 'https://git.kernel.org/stable/c/831c29a12d560f8a3225f43050b3fbb5dfd79c66'
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89468.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-89468'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2532357'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-89468'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-89468'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-89468.mbox
tags:
  - cve.org
  - csaf
  - vex
  - red-hat
epss: 0.00168
epssPercentile: 0.06159
ingestedAt: '2026-09-14T00:35:28.530Z'
---

## Overview

In the Linux kernel, the following vulnerability has been resolved:

power: supply: lp8788-charger: fix use-after-free on remove

lp8788_charger_remove() flushes charger_work before unregistering the
IRQs. An IRQ thread can queue charger_work after flush_work() has
returned. The work can then run after devres frees pchg and dereference
it in lp8788_charger_event().

Unregister the IRQs first. free_irq() waits for any running threaded
handler, so no handler can queue more work afterwards. Then use
cancel_work_sync() to cancel pending work or wait for running work to
finish.

This issue was found by an in-house static analysis tool.

## Affected

- `Linux >= 98a2766493589c18c327ae3dad5243b53fcb5f70 < 4e3d3923976a986cc3cf960d13f1264cea8a9bba`
- `Linux >= 98a2766493589c18c327ae3dad5243b53fcb5f70 < 88d8eadfad5d9ff967e74090152940bcfa27df69`
- `Linux >= 98a2766493589c18c327ae3dad5243b53fcb5f70 < b3aa1e9509e1b0a863353356d617fb45d1b6250a`
- `Linux >= 98a2766493589c18c327ae3dad5243b53fcb5f70 < b4eb6a056b441ba0caedfbfc42cec501acf12f67`
- `Linux >= 98a2766493589c18c327ae3dad5243b53fcb5f70 < 831c29a12d560f8a3225f43050b3fbb5dfd79c66`
- `Linux 3.7`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Vendor advisories

- **Red Hat VEX** · Moderate · updated 2026-09-16 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89468.json)