---
title: "CVE-2026-89705: Linux Kernel - Broken Access Control"
description: "Linux kernel contains a broken access control vulnerability in nfsd_dispatch() caused by improper restoration of rq_status_counter on all exit paths, letting attackers cause data races and inconsistent state exposure, exploit requires kernel-level access."
url: https://panop.io/threat-heartbeat/CVE-2026-89705/
---

# CVE-2026-89705 Linux Kernel - Broken Access Control

Linux kernel contains a broken access control vulnerability in nfsd\_dispatch() caused by improper restoration of rq\_status\_counter on all exit paths, letting attackers cause data races and inconsistent state exposure, exploit requires kernel-level access.

CVSS base score 7.1 /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-2026-89705)

## Details

Type

Broken Access Control

Impact

Broken Access Control

CVSS vector

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

Published

11 September 2026

Updated

15 October 2026

## Vendor fix

Update to the latest Linux kernel version containing the fix for rq\_status\_counter restoration.

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-2026-89705](https://nvd.nist.gov/vuln/detail/CVE-2026-89705)
- [https://git.kernel.org/stable/c/b08c30f08d57f30699d36809d92f0b683dca261f](https://git.kernel.org/stable/c/b08c30f08d57f30699d36809d92f0b683dca261f)
- [https://git.kernel.org/stable/c/f6045886fe3f14f269f683d64021b004a50d0efa](https://git.kernel.org/stable/c/f6045886fe3f14f269f683d64021b004a50d0efa)
- [https://git.kernel.org/stable/c/df5500ab85df661d9e4439e4c456787181fbd5ff](https://git.kernel.org/stable/c/df5500ab85df661d9e4439e4c456787181fbd5ff)

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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

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