P4Verified

CVE-2025-21863: linux kernel from 5.6 (inclusive), before 6.6.80 (exclusive), from 6.7 (inclusive), before 6.12.17 (exclusive), from…

CVE-2025-21863. CVSS 3.1 base score 7.8 (HIGH, NVD). EPSS 0.00251 (percentile 0.15303), scored 14-Oct-2026.

Affected technology

linux kernel · from 5.6 (inclusive), before 6.6.80 (exclusive)
linux

linux kernel · from 6.7 (inclusive), before 6.12.17 (exclusive)
linux

linux kernel · from 6.13 (inclusive), before 6.13.5 (exclusive)
linux

linux kernel · 6.14 · update rc1
linux

linux kernel · 6.14 · update rc2
linux

linux kernel · 6.14 · update rc3
linux

Linux · d3656344fea0339fb0365c8df4d2beba4e0089cd to before 87e9eef43c758da267f6332678058a79764c7eba, d3656344fea0339fb0365c8df4d2beba4e0089cd to before 18eae8420081ef8e043ad455937bfb470ef08607, d3656344fea0339fb0365c8df4d2beba4e0089cd to before d261ead565a080e3411b0dd04e6d58a52471cac8, d3656344fea0339fb0365c8df4d2beba4e0089cd to before b9826e3b26ec031e9063f64a7c735449c43955e4, d3656344fea0339fb0365c8df4d2beba4e0089cd to before 506b9b5e8c2d2a411ea8fe361333f5081c56d23a, d3656344fea0339fb0365c8df4d2beba4e0089cd to before fdbfd52bd8b85ed6783365ff54c82ab7067bd61b, d3656344fea0339fb0365c8df4d2beba4e0089cd to before 1e988c3fe1264708f4f92109203ac5b1d65de50b
Linux

Linux · 5.6
Linux

SIMATIC S7-1500 CPU 1518-4 PN/DP MFP · V3.1.6 to before *
Siemens

SIMATIC S7-1500 CPU 1518-4 PN/DP MFP · V3.1.7 to before *
Siemens

SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP · V3.1.6 to before *
Siemens

SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP · V3.1.7 to before *
Siemens

SIMATIC S7-1500 TM MFP - GNU/Linux subsystem · 0 to before *
Siemens

SIPLUS S7-1500 CPU 1518-4 PN/DP MFP · V3.1.6 to before *
Siemens

SIPLUS S7-1500 CPU 1518-4 PN/DP MFP · V3.1.7 to before *
Siemens

Component: Not specified by the source
File: io_uring/io_uring.c

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

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

What an attacker can do

NVD’s CVSS 3.1 assessment (base score 7.8/10) rates confidentiality, integrity and availability impact as high. Source advisory’s CVSS 3.1 assessment (base score 7.8/10) rates confidentiality, integrity and availability impact as high. The description does not specify what an attacker can achieve beyond these rated impacts.

Published 15-Oct-2026 09:20 UTC

CCR priority: 31.3 /100 (P4)
CVSS 3.1: 7.8 /10 · CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H · NVD
EPSS: 0.00251 · percentile 0.15303 · 2026-10-14
KEV: no

Provenance

FIRST EPSS daily exploit-probability · Source record · observed 2026-10-15 09:24:28.011626+00:00 UTC
GitHub Advisory Database · Source record · observed 2026-10-15 10:43:56.988652+00:00 UTC
NVD CVE API 2.0 · Source record · observed 2026-10-15 09:18:22.406219+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2025-21863.html