---
id: CVE-2026-89705
title: >-
  kernel: nfsd: restore rq_status_counter to even on all nfsd_dispatch() exit
  paths (CVE-2026-89705)
summary: >-
  A flaw was found in the Linux kernel's Network File System (NFS) daemon, nfsd.
  This vulnerability occurs due to a synchronization issue where a status
  counter (rq_status_counter) is not correctly reset on all exit paths within
  the nfsd_dis…
severity: high
cvss: 7
cvssVector: 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H'
cvssSource: vendor
cwe: CWE-125
vendor: Red Hat
product: Red Hat Enterprise Linux 9
affected:
  - enterprise_linux 10
  - enterprise_linux 9
  - openshift_container_platform 4
published: '2026-09-11'
updated: '2026-09-16'
sourceUpdated: '2026-09-16T10:08:29+00:00'
source: CSAF
sourceUrl: 'https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89705.json'
references:
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89705.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-89705'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2532490'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-89705'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-89705'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-89705.mbox
  - url: 'https://git.kernel.org/stable/c/b08c30f08d57f30699d36809d92f0b683dca261f'
  - url: 'https://git.kernel.org/stable/c/f6045886fe3f14f269f683d64021b004a50d0efa'
tags:
  - csaf
  - vex
  - red-hat
  - cve.org
epss: 0.0015
epssPercentile: 0.0453
scores:
  vendor: 7
  cna: 7.1
ingestedAt: '2026-09-14T15:23:07.472Z'
---

## Overview

A flaw was found in the Linux kernel's Network File System (NFS) daemon, nfsd. This vulnerability occurs due to a synchronization issue where a status counter (rq_status_counter) is not correctly reset on all exit paths within the nfsd_dispatch() function. This can lead to a race condition where a lockless reader accesses actively changing data, potentially reading beyond the intended memory boundary. An attacker could exploit this memory corruption to cause a denial of service or potentially disclose sensitive information.

## Vendor advisories

- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · updated 2026-09-16 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89705.json)

**kernel: nfsd: restore rq_status_counter to even on all nfsd_dispatch() exit paths** — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-09-16.

Affected:

- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 9
- Red Hat OpenShift Container Platform 4

No fix planned:

- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 9
- Red Hat OpenShift Container Platform 4

Not affected:

- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat OpenShift Container Platform 4

## Remediation

Affected