P4Verified

CVE-2026-89840: Linux 4.8

CVE-2026-89840 affects azl3 kernel 6.6.157.1-1 on Azure Linux 3.0. CVSS 3.1 base score 7.1 (HIGH, Microsoft Security Response Center). EPSS 0.00171 (percentile 0.05839), scored 06-Oct-2026. Fixed version: 7.2.6-1. Fixed version: 6.12.112-r0. Fixed version: 6.18.53-r0.

Affected technology

Linux · 4dd6f977fc778e5a0da604e5f8cb2f36d163d27b to before bca61ee5192ea47003722486ae9588a2a4bb47b6, 4dd6f977fc778e5a0da604e5f8cb2f36d163d27b to before db13064669526494cd78ba3a4394063b740e940c, 4dd6f977fc778e5a0da604e5f8cb2f36d163d27b to before dcae1eeda53149f219dd6af93b3083b7271c1c63, 4dd6f977fc778e5a0da604e5f8cb2f36d163d27b to before e533889fc26aea0cd83c90327063f272061dd820
Linux

Linux · 4.8
Linux

Component: Not specified by the source
File: fs/f2fs/file.c

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

What an attacker can do

Source advisory’s CVSS 3.1 assessment (base score 7.1/10) rates confidentiality impact as none; integrity and availability impact as high. The description does not specify what an attacker can achieve beyond these rated impacts.

Published 11-Oct-2026 14:52 UTC

Product: azl3 kernel 6.6.157.1-1 on Azure Linux 3.0
CCR priority: 28.4 /100 (P4)
CVSS 3.1: 7.1 /10 · CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H/E:U · Microsoft Security Response Center
EPSS: 0.00171 · percentile 0.05907 · 2026-10-10
KEV: no

Provenance

FIRST EPSS daily exploit-probability · Source record · observed 2026-10-10 21:26:32.650893+00:00 UTC
GitHub Advisory Database · Source record · observed 2026-10-04 06:01:24.332572+00:00 UTC
Microsoft MSRC Security Update Guide (CVRF) · Source record · observed 2026-10-04 07:08:49.022374+00:00 UTC
NVD CVE API 2.0 · Source record · observed 2026-10-04 05:55:03.931280+00:00 UTC
OSV.dev · Source record · observed 2026-10-08 08:57:13.774521+00:00 UTC
OSV.dev · Source record · observed 2026-10-04 13:35:46.972631+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-89840.html