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CVE-2025-40240: Linux 4.8
CVE-2025-40240 affects azl3 kernel 6.6.112.1-2 on Azure Linux 3.0. CVSS 3.1 base score 7.5 (HIGH, Source advisory). EPSS 0.006 (percentile 0.4772), scored 19-Oct-2026.
Affected technology
Linux · 90017accff61ae89283ad9a51f9ac46ca01633fb to before 61cda2777b07d27459f5cac5a047c3edf9c8a1a9, 90017accff61ae89283ad9a51f9ac46ca01633fb to before 08165c296597075763130919f2aae59b5822f016, 90017accff61ae89283ad9a51f9ac46ca01633fb to before 03e80a4b04ef1fb2c61dd63216ab8d3a5dcb196f, 90017accff61ae89283ad9a51f9ac46ca01633fb to before 4f6da435fb5d8a21cbf8cae5ca5a2ba0e1012b71, 90017accff61ae89283ad9a51f9ac46ca01633fb to before cb9055ba30306ede4ad920002233d0659982f1cb, 90017accff61ae89283ad9a51f9ac46ca01633fb to before 7a832b0f99be19df608cb75c023f8027b1789bd1, 90017accff61ae89283ad9a51f9ac46ca01633fb to before 89b465b54227c245ddc7cc9ed822231af21123ef, 90017accff61ae89283ad9a51f9ac46ca01633fb to before 441f0647f7673e0e64d4910ef61a5fb8f16bfb82
Linux
Linux · 4.8
Linux
Component: Not specified by the source
File: net/sctp/inqueue.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 7.5/10) 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.
- Product
- azl3 kernel 6.6.112.1-2 on Azure Linux 3.0
- CCR priority
- 30.2 /100 (P4)
- CVSS 3.1
- 7.5 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H · Source advisory
- EPSS
- 0.006 · percentile 0.4772 · 2026-10-19
- KEV
- no
Provenance
- FIRST EPSS daily exploit-probability · Source record · observed 2026-10-19 14:17:18.977832+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 2026-10-19 19:46:42.191502+00:00 UTC
Stable permalink: https://cybercodered.org/item/cve-cve-2025-40240.html