P4Verified

CVE-2026-31669: linux kernel 5.12; +4 more affected products

CVE-2026-31669. CVSS 3.1 base score 9.8 (CRITICAL, Source advisory). EPSS 0.00822 (percentile 0.56356), scored 14-Oct-2026.

Affected technology

linux kernel · from 5.12.1 (inclusive), before 5.15.203 (exclusive)
linux

linux kernel · from 5.16 (inclusive), before 6.1.169 (exclusive)
linux

linux kernel · from 6.2 (inclusive), before 6.6.135 (exclusive)
linux

linux kernel · from 6.7 (inclusive), before 6.12.82 (exclusive)
linux

linux kernel · from 6.13 (inclusive), before 6.18.23 (exclusive)
linux

linux kernel · from 6.19 (inclusive), before 6.19.13 (exclusive)
linux

linux kernel · 5.12
linux

linux kernel · 7.0 · update rc1
linux

linux kernel · 7.0 · update rc2
linux

linux kernel · 7.0 · update rc3
linux

linux kernel · 7.0 · update rc4
linux

linux kernel · 7.0 · update rc5
linux

linux kernel · 7.0 · update rc6
linux

linux kernel · 7.0 · update rc7
linux

Linux · b19bc2945b40b9fd38e835700907ffe8534ef0de to before f6e1f25fa5e733570f6d6fe37a4dfed2a0deba47, b19bc2945b40b9fd38e835700907ffe8534ef0de to before fb1f54b7d16f393b8b65d328410f78b4beea8fcc, b19bc2945b40b9fd38e835700907ffe8534ef0de to before 3fd6547f5b8ac99687be6d937a0321efda760597, b19bc2945b40b9fd38e835700907ffe8534ef0de to before eb9c6aeb512f877cf397deb1e4526f646c70e4a7, b19bc2945b40b9fd38e835700907ffe8534ef0de to before 15fa9ead4d5e6b6b9c794e84144146c917f2cb62, b19bc2945b40b9fd38e835700907ffe8534ef0de to before b313e9037d98c13938740e5ebda7852929366dff, b19bc2945b40b9fd38e835700907ffe8534ef0de to before 9b55b253907e7431210483519c5ad711a37dafa1
Linux

Linux · 5.12
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 · V3.1.5 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 · V3.1.5 to before *
Siemens

SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP · V3.1.7 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 · V3.1.5 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: net/mptcp/protocol.c, net/mptcp/protocol.h, net/mptcp/subflow.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 15-Oct-2026 09:20 UTC

CWE: CWE-416
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: 0.00822 · percentile 0.56356 · 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-2026-31669.html