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CVE-2026-74730
NFS: Pin the 'struct nfs_server' during a FREE_STATEID call
Overview
Description

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.

Details
INFO

Published Date :

Aug. 22, 2026, 4:16 p.m.

Last Modified :

Aug. 22, 2026, 4:16 p.m.

Remotely Exploit :

No

Source :

416baaa9-dc9f-4396-8d5f-8c081fb06d67
Impact
Affected Products

The following products are affected by CVE-2026-74730 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Linux linux_kernel
: Total Affected Vendor : 1 | Products : 1
Solution
Apply kernel updates to prevent use-after-free during NFS stateid operations.
  • Update the Linux kernel to the latest patched version.
  • Ensure NFS stateid operations are properly managed.
  • Monitor system logs for related errors.
References
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2026-74730.

URL Resource
https://git.kernel.org/stable/c/80ed3d762628b36c9e4b22fac7c65b72ef3b13dd
https://git.kernel.org/stable/c/af62f1af182d33a0de38308c012841885d8ab92e
https://git.kernel.org/stable/c/caee6a68ffaa5016dfc01cd0b3dc1896a32e3abd
https://git.kernel.org/stable/c/cf616096a0f3a2b60f7d68b6b39674a6867ded9c
https://git.kernel.org/stable/c/d71dfffa512e71b166a889484e4c3b148a9a3af2
https://git.kernel.org/stable/c/d858ab09e787106432d4d9830bad9dfedf02f890
https://git.kernel.org/stable/c/ed1161ab6239761958b38d5667225634fc2be894
https://git.kernel.org/stable/c/ed2f92ce2fc48463c41e0e540b9a3454889e8af8
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-74730 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-74730 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2026-74730 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2026-74730 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Aug. 22, 2026

    Action Type Old Value New Value
    Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '7c1d5fae4a87d3cf3e9ffd68bcdbaf6529013009', 'lessThan': 'ed2f92ce2fc48463c41e0e540b9a3454889e8af8', 'versionType': 'git'}, {'status': 'affected', 'version': '7c1d5fae4a87d3cf3e9ffd68bcdbaf6529013009', 'lessThan': 'd858ab09e787106432d4d9830bad9dfedf02f890', 'versionType': 'git'}, {'status': 'affected', 'version': '7c1d5fae4a87d3cf3e9ffd68bcdbaf6529013009', 'lessThan': 'af62f1af182d33a0de38308c012841885d8ab92e', 'versionType': 'git'}, {'status': 'affected', 'version': '7c1d5fae4a87d3cf3e9ffd68bcdbaf6529013009', 'lessThan': 'caee6a68ffaa5016dfc01cd0b3dc1896a32e3abd', 'versionType': 'git'}, {'status': 'affected', 'version': '7c1d5fae4a87d3cf3e9ffd68bcdbaf6529013009', 'lessThan': 'ed1161ab6239761958b38d5667225634fc2be894', 'versionType': 'git'}, {'status': 'affected', 'version': '7c1d5fae4a87d3cf3e9ffd68bcdbaf6529013009', 'lessThan': 'd71dfffa512e71b166a889484e4c3b148a9a3af2', 'versionType': 'git'}, {'status': 'affected', 'version': '7c1d5fae4a87d3cf3e9ffd68bcdbaf6529013009', 'lessThan': '80ed3d762628b36c9e4b22fac7c65b72ef3b13dd', 'versionType': 'git'}, {'status': 'affected', 'version': '7c1d5fae4a87d3cf3e9ffd68bcdbaf6529013009', 'lessThan': 'cf616096a0f3a2b60f7d68b6b39674a6867ded9c', 'versionType': 'git'}], 'programFiles': ['fs/nfs/nfs4proc.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '3.10'}, {'status': 'unaffected', 'version': '0', 'lessThan': '3.10', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.10.265', 'versionType': 'semver', 'lessThanOrEqual': '5.10.*'}, {'status': 'unaffected', 'version': '5.15.216', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'status': 'unaffected', 'version': '6.1.183', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.152', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.104', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.45', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.9', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['fs/nfs/nfs4proc.c'], 'defaultStatus': 'affected'}]
    Added Description 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.
    Added Reference https://git.kernel.org/stable/c/80ed3d762628b36c9e4b22fac7c65b72ef3b13dd
    Added Reference https://git.kernel.org/stable/c/af62f1af182d33a0de38308c012841885d8ab92e
    Added Reference https://git.kernel.org/stable/c/caee6a68ffaa5016dfc01cd0b3dc1896a32e3abd
    Added Reference https://git.kernel.org/stable/c/cf616096a0f3a2b60f7d68b6b39674a6867ded9c
    Added Reference https://git.kernel.org/stable/c/d71dfffa512e71b166a889484e4c3b148a9a3af2
    Added Reference https://git.kernel.org/stable/c/d858ab09e787106432d4d9830bad9dfedf02f890
    Added Reference https://git.kernel.org/stable/c/ed1161ab6239761958b38d5667225634fc2be894
    Added Reference https://git.kernel.org/stable/c/ed2f92ce2fc48463c41e0e540b9a3454889e8af8
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CVSS
Vulnerability Scoring Details
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