CVE-2025-21886: linux kernel from 6.12.13 (inclusive), before 6.12.18 (exclusive), from 6.13.2 (inclusive), before 6.13.6 (exclusive)…

CVE-2025-21886. CVSS 3.1 base score 5.5 (MEDIUM, NVD). EPSS 0.00203 (percentile 0.0972), scored 20-Oct-2026.

Affected technology

linux kernel · from 6.12.13 (inclusive), before 6.12.18 (exclusive)
linux

linux kernel · from 6.13.2 (inclusive), before 6.13.6 (exclusive)
linux

linux kernel · 6.14 · update rc1
linux

linux kernel · 6.14 · update rc2
linux

linux kernel · 6.14 · update rc3
linux

linux kernel · 6.14 · update rc4
linux

Linux · 7cc8f681f6d4ae4478ae0f60485fc768f2b450da to before cb96ae783e7249e8e5a50c22952c0bb2983133df, edfb65dbb9ffd3102f3ff4dd21316158e56f1976 to before a095ede2daca49d15e74d66d014883f2fa8bb924, d3d930411ce390e532470194296658a960887773 to before 3d8c6f26893d55fab218ad086719de1fc9bb86ba, a306dfff6b76aafa264ad33874a8992a8d5858b7, 6.6.160 to before 6.7
Linux

Linux · 6.12.13 to before 6.12.18, 6.13.2 to before 6.13.6
Linux

Component: Not specified by the source
File: drivers/infiniband/hw/mlx5/odp.c

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

What an attacker can do

NVD’s CVSS 3.1 assessment (base score 5.5/10) rates confidentiality and integrity impact as none; availability impact as high. The description does not specify what an attacker can achieve beyond these rated impacts.

Published 21-Oct-2026 16:14 UTC

CCR priority: 22.1 /100 (P4)
CVSS 3.1: 5.5 /10 · CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H · NVD
EPSS: 0.00203 · percentile 0.0972 · 2026-10-20
KEV: no

Provenance

NVD CVE API 2.0 · Source record · observed 2026-10-21 16:09:05.633125+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2025-21886.html