---
title: "CVE-2026-89472: Linux Kernel - Use After Free"
description: "Linux kernel power supply charger-manager contains a use-after-free vulnerability caused by improper ordering of regulator release and sysfs teardown, letting local users cause memory corruption via concurrent sysfs writes, exploit requires concurrent access to externally_control sysfs attribute."
url: https://panop.io/threat-heartbeat/CVE-2026-89472/
---

# CVE-2026-89472 Linux Kernel - Use After Free

Linux kernel power supply charger-manager contains a use-after-free vulnerability caused by improper ordering of regulator release and sysfs teardown, letting local users cause memory corruption via concurrent sysfs writes, exploit requires concurrent access to externally\_control sysfs attribute.

CVSS base score 7.8 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.16% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-89472)

## Details

Type

Use After Free

Impact

Privilege Escalation, Denial Of Service

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Published

11 September 2026

Updated

15 October 2026

## Vendor fix

Update to the latest Linux kernel version with the fix for proper regulator and sysfs teardown ordering.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-89472](https://nvd.nist.gov/vuln/detail/CVE-2026-89472)
- [https://git.kernel.org/stable/c/c57cb36f76eb7ced45f57af1a890d8f3a6d76342](https://git.kernel.org/stable/c/c57cb36f76eb7ced45f57af1a890d8f3a6d76342)
- [https://git.kernel.org/stable/c/6d532582ff3c420598f02945b13184c738cc1581](https://git.kernel.org/stable/c/6d532582ff3c420598f02945b13184c738cc1581)
- [https://git.kernel.org/stable/c/86e4fa65368f3bbb506dddba8c9eedc75bd603b2](https://git.kernel.org/stable/c/86e4fa65368f3bbb506dddba8c9eedc75bd603b2)
- [https://git.kernel.org/stable/c/af3ce383ba0d0d48957a22ac7058ff5698775898](https://git.kernel.org/stable/c/af3ce383ba0d0d48957a22ac7058ff5698775898)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

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