CVE-2026-89660: Linux 6.9

CVE-2026-89660. CVSS 3.1 base score 9.8 (CRITICAL, Source advisory). EPSS 0.00617 (percentile 0.48506), scored 17-Oct-2026.

Affected technology

Linux · 1c13bf9f2e3cd5a59ef988c6c5a49fe0f02bcdfc to before e1ba4d3c5bfdca3f013b8cbc829ae2f7975d8608, 1c13bf9f2e3cd5a59ef988c6c5a49fe0f02bcdfc to before 549bd9868e9d77b07ea94870940d64342829c6ad, 1c13bf9f2e3cd5a59ef988c6c5a49fe0f02bcdfc to before bf1f948691523282cc4905bc6cd325e0c0b49e6a, 1c13bf9f2e3cd5a59ef988c6c5a49fe0f02bcdfc to before e270e5a0778e5bff852c8862ce9576ce70359393
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-2026-89660.html