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CVE-2025-40307: Linux 5.7
CVE-2025-40307 affects azl3 kernel 6.6.117.1-1 on Azure Linux 3.0. CVSS 3.1 base score 7.8 (HIGH, Source advisory). EPSS 0.00147 (percentile 0.0345), scored 13-Oct-2026.
Affected technology
Linux · 1acf1a564b6034b5af1e7fb23cb98cb3bb4f6003 to before 87f827d53bd0688597bda63ae95908e2ad39bac0, 1acf1a564b6034b5af1e7fb23cb98cb3bb4f6003 to before 67ce8034dc0278ddd88cad93d4218a945180dddd, 1acf1a564b6034b5af1e7fb23cb98cb3bb4f6003 to before 6bc58b4c53795ab5fe00648344aa7d9d61175f90, 1acf1a564b6034b5af1e7fb23cb98cb3bb4f6003 to before 13c1d24803d5b0446b3f6f0fdd67e07ac1fdc7bf, 1acf1a564b6034b5af1e7fb23cb98cb3bb4f6003 to before 79c1587b6cda74deb0c86fc7ba194b92958c793c
Linux
Linux · 5.7
Linux
Component: Not specified by the source
File: fs/exfat/balloc.c
Attack conditions (Source advisory, CVSS 3.1): Local · Low privileges required · No user interaction required
What an attacker can do
Source advisory’s CVSS 3.1 assessment (base score 7.8/10) rates confidentiality, integrity and availability impact as high. The description does not specify what an attacker can achieve beyond these rated impacts.
- Product
- azl3 kernel 6.6.117.1-1 on Azure Linux 3.0
- 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
- 0.00147 · percentile 0.0345 · 2026-10-13
- KEV
- no
Provenance
- FIRST EPSS daily exploit-probability · Source record · observed 2026-10-14 05:24:14.258005+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 01:07:31.726917+00:00 UTC
Stable permalink: https://cybercodered.org/item/cve-cve-2025-40307.html