---
id: CVE-2026-74730
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  NFS: Pin the 'struct nfs_server' during a FREE_STATEID call

  Dan Aloni reports that he was able to hit a use-after-free bug if a
  FREE_STATEID operation gets delayed for…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  NFS: Pin the 'struct nfs_server' during a FREE_STATEID call

  Dan Aloni reports that he was able to hit a use-after-free bug if a
  FREE_STATEID operation gets delayed for…
severity: critical
cvss: 9.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-911
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 7c1d5fae4a87d3cf3e9ffd68bcdbaf6529013009 <
    ed2f92ce2fc48463c41e0e540b9a3454889e8af8
  - >-
    Linux >= 7c1d5fae4a87d3cf3e9ffd68bcdbaf6529013009 <
    d858ab09e787106432d4d9830bad9dfedf02f890
  - >-
    Linux >= 7c1d5fae4a87d3cf3e9ffd68bcdbaf6529013009 <
    af62f1af182d33a0de38308c012841885d8ab92e
  - >-
    Linux >= 7c1d5fae4a87d3cf3e9ffd68bcdbaf6529013009 <
    caee6a68ffaa5016dfc01cd0b3dc1896a32e3abd
  - >-
    Linux >= 7c1d5fae4a87d3cf3e9ffd68bcdbaf6529013009 <
    ed1161ab6239761958b38d5667225634fc2be894
  - >-
    Linux >= 7c1d5fae4a87d3cf3e9ffd68bcdbaf6529013009 <
    d71dfffa512e71b166a889484e4c3b148a9a3af2
  - >-
    Linux >= 7c1d5fae4a87d3cf3e9ffd68bcdbaf6529013009 <
    80ed3d762628b36c9e4b22fac7c65b72ef3b13dd
  - >-
    Linux >= 7c1d5fae4a87d3cf3e9ffd68bcdbaf6529013009 <
    cf616096a0f3a2b60f7d68b6b39674a6867ded9c
  - Linux 3.10
published: '2026-08-22'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T20:17:55.210'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-74730'
references:
  - url: 'https://git.kernel.org/stable/c/80ed3d762628b36c9e4b22fac7c65b72ef3b13dd'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/af62f1af182d33a0de38308c012841885d8ab92e'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/caee6a68ffaa5016dfc01cd0b3dc1896a32e3abd'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/cf616096a0f3a2b60f7d68b6b39674a6867ded9c'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/d71dfffa512e71b166a889484e4c3b148a9a3af2'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/d858ab09e787106432d4d9830bad9dfedf02f890'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/ed1161ab6239761958b38d5667225634fc2be894'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/ed2f92ce2fc48463c41e0e540b9a3454889e8af8'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-74730.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-74730'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2521360'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-74730'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-74730'
  - url: 'https://kernelcve.org/list/?q=CVE-2026-74730'
  - url: >-
      https://lore.kernel.org/linux-cve-announce/2026082242-CVE-2026-74730-e35d@gregkh/T
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
  - score-dispute
epss: 0.0051
epssPercentile: 0.43321
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: total
  timestamp: '2026-10-16T19:15:50.650757Z'
scores:
  nvd: 9.8
  vendor: 4.7
ingestedAt: '2026-10-14T13:30:58.550Z'
---

## Overview

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

NFS: Pin the 'struct nfs_server' during a FREE_STATEID call

Dan Aloni reports that he was able to hit a use-after-free bug if a
FREE_STATEID operation gets delayed for whatever reason. Fix this by
bumping the refcount of the 'struct nfs_server' object for the duration
of the FREE_STATEID so it doesn't get cleaned up from underneath us
while operations are still in flight.

## 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 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, … · updated 2026-10-26 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-74730.json)