CVE-2026-89658: Linux 6.9

CVE-2026-89658. CVSS 3.1 base score 9.8 (CRITICAL, Source advisory). EPSS 0.00617 (percentile 0.48506), scored 17-Oct-2026.

Affected technology

Linux · d688d8585e6bea5e4e37f7497feea93b6b0a469c to before 0ae0d2b5c5a1b39c0b3c15d96b32a5b0c583d519, d688d8585e6bea5e4e37f7497feea93b6b0a469c to before b413ec5b23e3445dc9c4f273116078e2d4747626, d688d8585e6bea5e4e37f7497feea93b6b0a469c to before 81cf7f1413862f87b078920c838460a6a88aa030, d688d8585e6bea5e4e37f7497feea93b6b0a469c to before 7b4f8a1586c42d3afc3c0ac779af2db7ab1a5c55
Linux

Linux · 6.9
Linux

Component: Not specified by the source
File: fs/nfsd/nfs4state.c

Attack conditions (Source advisory, CVSS 3.1): Network (remote) · No privileges required · No user interaction required

What an attacker can do

Source advisory’s CVSS 3.1 assessment (base score 9.8/10) rates confidentiality, integrity and availability impact as high. The description does not specify what an attacker can achieve beyond these rated impacts.

Published 19-Oct-2026 10:36 UTC

CCR priority: 39.4 /100 (P4)
CVSS 3.1: 9.8 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H · Source advisory
EPSS: 0.00617 · percentile 0.48506 · 2026-10-17
KEV: no

Provenance

NVD CVE API 2.0 · Source record · observed 2026-10-19 10:33:46.008150+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-89658.html