---
id: CVE-2026-89504
title: >-
  kernel: regulator: as3722_get_regulator_dt_data: fix premature of_node_put
  leaving dangling of_node pointer (CVE-2026-89504)
summary: >-
  A flaw was found in the Linux kernel's regulator subsystem. This vulnerability
  arises from a programming error where a device tree node pointer is released
  too early, creating a "dangling pointer"—a reference to memory that is no
  longer va…
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 Enterprise Linux 9
affected:
  - enterprise_linux 10
  - enterprise_linux 8
  - enterprise_linux 9
  - openshift_container_platform 4
published: '2026-09-11'
updated: '2026-09-18'
sourceUpdated: '2026-09-18T21:28:51+00:00'
source: CSAF
sourceUrl: 'https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89504.json'
references:
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89504.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-89504'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2532102'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-89504'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-89504'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-89504.mbox
  - url: 'https://git.kernel.org/stable/c/d9b1407477fb736978b04108073180ca84958936'
  - url: 'https://git.kernel.org/stable/c/bd5606e9da1a01a61c7d2f5df36243414a0142be'
  - url: 'https://git.kernel.org/stable/c/0bde4f140e90f87ebd49cd9c884c4bb3f19fe931'
  - url: 'https://git.kernel.org/stable/c/eda08b6bd64f01ca9defbfcc9e0c3e30f46cfc02'
  - url: 'https://git.kernel.org/stable/c/d3c1316d84e0a036890b00ae6e4c0b0b80f70c25'
  - url: 'https://git.kernel.org/stable/c/95342d26f9c6b68a46ab57fa48428a3c4a423dd7'
  - url: 'https://git.kernel.org/stable/c/8648e29e5c01b6b677c704049189287e27255ccb'
  - url: 'https://git.kernel.org/stable/c/f9324d670ae0b88cbfb0aa48fcaefa5baeb8da4c'
tags:
  - csaf
  - vex
  - red-hat
  - cve.org
  - score-dispute
epss: 0.00144
epssPercentile: 0.0402
scores:
  vendor: 5.5
  cna: 8.4
ingestedAt: '2026-09-14T15:23:07.452Z'
---

## Overview

A flaw was found in the Linux kernel's regulator subsystem. This vulnerability arises from a programming error where a device tree node pointer is released too early, creating a "dangling pointer"—a reference to memory that is no longer valid. This can lead to system instability, potentially causing the system to crash, resulting in a Denial of Service (DoS). In some scenarios, this type of memory corruption could also be exploited by a local attacker to achieve arbitrary code execution.

## Vendor advisories

- **Red Hat VEX** · Moderate · updated 2026-09-18 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89504.json)

**kernel: regulator: as3722_get_regulator_dt_data: fix premature of_node_put leaving dangling of_node pointer** — 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.