CVE-2026-45940: linux kernel from 5.4 (inclusive), before 6.18.14 (exclusive), from 6.19 (inclusive), before 6.19.4 (exclusive); +1…

CVE-2026-45940. CVSS 3.1 base score 5.5 (MEDIUM, NVD). EPSS 0.0016 (percentile 0.04777), scored 20-Oct-2026.

Affected technology

linux kernel · from 5.4 (inclusive), before 6.18.14 (exclusive)
linux

linux kernel · from 6.19 (inclusive), before 6.19.4 (exclusive)
linux

Linux · ec222003bd948de8f3ffbca522d328af1a8452ad to before 107e169f963920b11fa3c1bb384c077fe7330696, ec222003bd948de8f3ffbca522d328af1a8452ad to before 92b45c99311ac4f3857cccee47059c4fb067fd4d, ec222003bd948de8f3ffbca522d328af1a8452ad to before b1f23df09e7dbf4c86b6908dff7efb8cb2b7d609, ec222003bd948de8f3ffbca522d328af1a8452ad to before 36f81cb7d82e9614a7058da6abdf2e3a03993df1, ec222003bd948de8f3ffbca522d328af1a8452ad to before babab1b42ed68877ef669a08384becf281ad2582
Linux

Linux · 5.4
Linux

Component: Not specified by the source
File: drivers/net/ethernet/stmicro/stmmac/stmmac_main.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: 22.0 /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: 0.0016 · percentile 0.04777 · 2026-10-20
KEV: no

Provenance

GitHub Advisory Database · Source record · observed 2026-10-21 16:14:50.830645+00:00 UTC
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-2026-45940.html