---
title: "CVE-2026-89523: Linux Kernel mt76 mt7925 - Use After Free"
description: "Linux kernel mt76 mt7925 contains a use-after-free vulnerability caused by pending mlo_pm_work running after device reset, suspend, or unregister, letting attackers cause memory corruption or instability, exploit requires device state changes."
url: https://panop.io/threat-heartbeat/CVE-2026-89523/
---

# CVE-2026-89523 Linux Kernel mt76 mt7925 - Use After Free

Linux kernel mt76 mt7925 contains a use-after-free vulnerability caused by pending mlo\_pm\_work running after device reset, suspend, or unregister, letting attackers cause memory corruption or instability, exploit requires device state changes.

CVSS base score 7.8 /10

High

CISA KEV

Not listed

Public exploit

None known

EPSS

0.17% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-89523)

## Details

Type

Use After Free

Impact

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 containing the fix that cancels pending mlo\_pm\_work in all relevant teardown and suspend paths.

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-2026-89523](https://nvd.nist.gov/vuln/detail/CVE-2026-89523)
- [https://git.kernel.org/stable/c/2889e84282dda147f10b10d94cf0efd90a349c53](https://git.kernel.org/stable/c/2889e84282dda147f10b10d94cf0efd90a349c53)
- [https://git.kernel.org/stable/c/5be6d02837d418bc6c805b5cab1b338de6de9ca7](https://git.kernel.org/stable/c/5be6d02837d418bc6c805b5cab1b338de6de9ca7)
- [https://git.kernel.org/stable/c/c5e073f2fbfd34d22099a50d96f60990799753e2](https://git.kernel.org/stable/c/c5e073f2fbfd34d22099a50d96f60990799753e2)

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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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