P4Verified

CVE-2026-23450: linux kernel from 5.15.174 (inclusive), before 5.15.203 (exclusive), from 5.18 (inclusive), before 6.1.167…

CVE-2026-23450. CVSS 3.1 base score 9.8 (CRITICAL, Source advisory). EPSS 0.0056 (percentile 0.45239), scored 14-Oct-2026.

Affected technology

linux kernel · from 5.15.174 (inclusive), before 5.15.203 (exclusive)
linux

linux kernel · from 5.18 (inclusive), before 6.1.167 (exclusive)
linux

linux kernel · from 6.2 (inclusive), before 6.6.130 (exclusive)
linux

linux kernel · from 6.7 (inclusive), before 6.12.78 (exclusive)
linux

linux kernel · from 6.13 (inclusive), before 6.18.20 (exclusive)
linux

linux kernel · from 6.19 (inclusive), before 6.19.10 (exclusive)
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 · ebfee3e153f67c8b38eb94a7062ee94aa6f92708 to before f315277856caeafcd996c2611afc085ca2d53275, 8270d9c21041470f58348248b9d9dcf3bf79592e to before 1e4f873879e075bbd4eb1c644d6933303ac5eba4, 8270d9c21041470f58348248b9d9dcf3bf79592e to before f00fc26c8a06442b225a350fe000c0a11483e6a3, 8270d9c21041470f58348248b9d9dcf3bf79592e to before cadf3da46c15523fba90d80c9955f536ee3b4023, 8270d9c21041470f58348248b9d9dcf3bf79592e to before fd7579f0a2c84ba8a7d4f206201b50dc8ddf90c2, 8270d9c21041470f58348248b9d9dcf3bf79592e to before 1fab5ece76fb42a761178dcd0ebcbf578377b0dd, 8270d9c21041470f58348248b9d9dcf3bf79592e to before 6d5e4538364b9ceb1ac2941a4deb86650afb3538, 5.15.174 to before 5.15.203
Linux

Linux · 5.18
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/smc/af_smc.c, net/smc/smc.h, net/smc/smc_close.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: 39.3 /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: 0.0056 · percentile 0.45239 · 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-2026-23450.html