---
id: CVE-2026-89693
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  nfsd: check nfsd4_acl_to_attr() return value in nfsd4_create()

  nfsd4_create() stores the return value of nfsd4_acl_to_attr() in
  status, but the switch(create->cr_type)…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  nfsd: check nfsd4_acl_to_attr() return value in nfsd4_create()

  nfsd4_create() stores the return value of nfsd4_acl_to_attr() in
  status, but the switch(create->cr_type)…
severity: high
cvss: 7
cvssVector: 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-252
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= c0cbe70742f4a70893cd6e5f6b10b6e89b6db95b <
    26877d3a09afb3838a053867a655ca30c46a1f81
  - >-
    Linux >= c0cbe70742f4a70893cd6e5f6b10b6e89b6db95b <
    430ed49a16cf9ca249d0fb51490582090bc4848b
  - >-
    Linux >= c0cbe70742f4a70893cd6e5f6b10b6e89b6db95b <
    80cebb0e8a8d1e758f0d671f5e047279c5c3e528
  - >-
    Linux >= c0cbe70742f4a70893cd6e5f6b10b6e89b6db95b <
    2c7912732184773dbd371a411da87af1cc080b86
  - Linux c5409ce523af40d5c3019717bc5b4f72038d48be
  - Linux d52acd23a327cada5fb597591267cfc09f08bb1d
  - Linux >= 5.10.220 < 5.11
  - Linux >= 5.15.154 < 5.16
  - Linux 6.0
published: '2026-09-11'
updated: '2026-09-21'
sourceUpdated: '2026-09-21T14:17:25.340'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-89693'
references:
  - url: 'https://git.kernel.org/stable/c/26877d3a09afb3838a053867a655ca30c46a1f81'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/2c7912732184773dbd371a411da87af1cc080b86'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/430ed49a16cf9ca249d0fb51490582090bc4848b'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/80cebb0e8a8d1e758f0d671f5e047279c5c3e528'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89693.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-89693'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2532042'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-89693'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-89693'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-89693.mbox
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
epss: 0.00209
epssPercentile: 0.09769
cvssSource: vendor
ingestedAt: '2026-09-14T11:11:19.885Z'
---

## Overview

In the Linux kernel, the following vulnerability has been resolved:

nfsd: check nfsd4_acl_to_attr() return value in nfsd4_create()

nfsd4_create() stores the return value of nfsd4_acl_to_attr() in
status, but the switch(create->cr_type) block unconditionally
overwrites it in every branch. ACL translation errors are silently
discarded, and the CREATE proceeds without the requested ACL.

Add an early exit check after nfsd4_acl_to_attr(), matching the
pattern already used in nfsd4_setattr().

[ cel: prefer NFS4ERR_BADTYPE over NFS4ERR_ATTRNOTSUPP ]

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Vendor advisories

- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · updated 2026-09-14 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89693.json)