P4Verified

CVE-2026-43303: linux kernel 5.18; +5 more affected products

CVE-2026-43303. CVSS 3.1 base score 7.8 (HIGH, Source advisory). EPSS 0.00165 (percentile 0.05302), scored 14-Oct-2026.

Affected technology

linux kernel · from 5.18.1 (inclusive), before 6.18.16 (exclusive)
linux

linux kernel · from 6.19 (inclusive), before 6.19.6 (exclusive)
linux

linux kernel · 5.18
linux

linux kernel · 5.18 · update rc4
linux

linux kernel · 5.18 · update rc5
linux

linux kernel · 5.18 · update rc6
linux

linux kernel · 5.18 · update rc7
linux

linux kernel · 5.18 · update rc9
linux

Linux · 3b8000ae185cb068adbda5f966a3835053c85fd4 to before e7790ab165713b79b1617ce659742ceb3a859d05, 3b8000ae185cb068adbda5f966a3835053c85fd4 to before 3edb8ebbf79b9016040e8f3421d723ae3d542b32, 3b8000ae185cb068adbda5f966a3835053c85fd4 to before f9719e32a67b4b00b3c9b133e8b5ffa72a26b67b, 3b8000ae185cb068adbda5f966a3835053c85fd4 to before 23b82b7a26182ad840ae67d390d7ec9771e8c00f, 3b8000ae185cb068adbda5f966a3835053c85fd4 to before d757c793853ec5483eb41ec2942c300b8fa720fb, 3b8000ae185cb068adbda5f966a3835053c85fd4 to before ac1ea219590c09572ed5992dc233bbf7bb70fef9
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 · V3.1.7 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: mm/page_alloc.c

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

What an attacker can do

A local attacker with low privileges can trigger a use-after-free error. Source advisory’s CVSS 3.1 assessment (base score 7.8/10) rates confidentiality, integrity and availability impact as high. The description does not state a further attacker outcome.

Published 15-Oct-2026 09:20 UTC

CWE: CWE-416
CCR priority: 31.2 /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 · Source advisory
EPSS: 0.00165 · percentile 0.05302 · 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-2026-43303.html