EUVD Vulnerability Catalog
EUVD-2026-76609
Severity: CRITICAL
Base Score: 9.1
CVSS Version: 3.1
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
nfsd: add fh_want_write() for early-verified SETATTR in nfsd_proc_setattr()
The BOTH_TIME_SET branch calls fh_verify() early so setattr_prepare()
can inspect the dentry. This causes nfsd_setattr() to skip
fh_want_write(), so notify_change() runs without a mount write
reference.
Add the missing fh_want_write() call after the early fh_verify().
CVSS Vector Analysis
Below is the complete, human-readable breakdown of the CVSS metric string: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
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Attack Vector (AV): Network
▪
Attack Complexity (AC): Low
▪
Privileges Required (PR): None
▪
User Interaction (UI): None
▪
Scope (S): Unchanged
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Confidentiality Impact (C): None
▪
Integrity Impact (I): High
▪
Availability Impact (A): High
Affected Vendors & Systems
Vendor
Linux
References & Advisory Links
- https://git.kernel.org/stable/c/3eec9d791968c177a4a8cda9af5c04f79dae09cb
- https://git.kernel.org/stable/c/9229d824b938f4fb0ea7a5dddade51735e6fe6f9
- https://git.kernel.org/stable/c/2150305134889fb2fc25228d35353bd2f6f29500
- https://git.kernel.org/stable/c/d823bf9285cdf4514873b85ab5a888878dd4e8f4
- https://git.kernel.org/stable/c/15ca3b64a69caa6194bed8f98a20ed90a11c11dd
- https://git.kernel.org/stable/c/533964d420d385e11b08dd4c56c66ef5dcccaf08
- https://git.kernel.org/stable/c/c4a409b86a92815181a8e9395c6bf1696ad19175
- https://git.kernel.org/stable/c/4e475be769aa9f7a2c1ce55a2b8592cfccacddcc
Metadata Profile
Database Authority
European Union Agency for Cybersecurity (ENISA) EUVD
Assigner
Linux
EPSS Probability
0.7
Known Aliases
GHSA-36mf-r537-f6c6
CVE-2026-89697
Published On
2026-09-11
Last Updated
2026-10-16