What is CVE-2025-40217?

CVE-2025-40217 is a security advisory published by Microsoft Security Response Center (MSRC) with Medium severity. pidfs: validate extensible ioctls

Which CVE IDs does CVE-2025-40217 cover?

CVE-2025-40217 covers the following CVE IDs: CVE-2025-40217. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

CVE-2025-40217 has a CVSS v3 base score of 5.5, published by Microsoft Security Response Center (MSRC).

CVE-2025-40217 affects 1 product, including: azl3 kernel 6.6.112.1-2 on Azure Linux 3.0.

CVE-2025-40217MediumCVSS 5.5

Vendor

Published

December 5, 2025

Last Modified

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KBCBL-Mariner Releases (Security Update) — fixed build 6.6.117.1-1