P4Verified

CVE-2025-40309: Linux 6.13

CVE-2025-40309 affects azl3 kernel 6.6.112.1-2 on Azure Linux 3.0. CVSS 3.1 base score 8.0 (HIGH, Source advisory). EPSS 0.00245 (percentile 0.14636), scored 14-Oct-2026.

Affected technology

Linux · e6720779ae612a14ac4ba7fe4fd5b27d900d932c to before 391f83547b7b2c63e4b572ab838e10a06cfa4425, e6720779ae612a14ac4ba7fe4fd5b27d900d932c to before ecb9a843be4d6fd710d7026e359f21015a062572
Linux

Linux · 6.13
Linux

Component: Not specified by the source
File: net/bluetooth/sco.c

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

What an attacker can do

Source advisory’s CVSS 3.1 assessment (base score 8.0/10) 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 22:59 UTC

Product: azl3 kernel 6.6.112.1-2 on Azure Linux 3.0
CCR priority: 32.1 /100 (P4)
CVSS 3.1: 8.0 /10 · CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H · Source advisory
EPSS: 0.00245 · percentile 0.14636 · 2026-10-14
KEV: no

Provenance

FIRST EPSS daily exploit-probability · Source record · observed 2026-10-15 09:24:28.011626+00:00 UTC
Microsoft MSRC Security Update Guide (CVRF) · Source record · observed 2026-10-04 07:08:49.022374+00:00 UTC
NVD CVE API 2.0 · Source record · observed 2026-10-15 22:58:54.984414+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2025-40309.html