CVE-2026-89697

Last refreshed2026-10-17

Status: UPDATED | Advisory ID: CVE-2026-89697

Key Details

CVE	CVE-2026-89697
CVSS Score / Version	9.1 (Critical) / CVSS v3.1
Updated	2026-10-16
CVSS Vector	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H`
CVSS Prose	attack vector is network; attack complexity is low; privileges required is none; user interaction is none; scope is unchanged; confidentiality impact is none; integrity impact is high; availability impact is high.
Affected products	Linux Kernel

Vendor	Product	Affected Versions	Patch Status
Linux	Linux Kernel

Vendor

Product

Affected Versions

Patch Status

Linux

Linux Kernel

Subsystems	OT Supporting Infrastructure
Sectors	All Sectors

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(). (NVD)

Monitor Linux's web page for any future patch releases.

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-89697
CVE	https://www.cve.org/CVERecord?id=CVE-2026-89697

Source

Reference

NVD

CVE