What is CVE-2025-40187?

CVE-2025-40187 is a security advisory published by Microsoft Security Response Center (MSRC) with Medium severity. net/sctp: fix a null dereference in sctp_disposition sctp_sf_do_5_1D_ce()

Which CVE IDs does CVE-2025-40187 cover?

CVE-2025-40187 covers the following CVE IDs: CVE-2025-40187. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2025-40187?

CVE-2025-40187 has a CVSS v3 base score of 5.5, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2025-40187?

CVE-2025-40187 affects 1 product, including: azl3 kernel 6.6.112.1-2 on Azure Linux 3.0.

CVE-2025-40187MediumCVSS 5.5

net/sctp: fix a null dereference in sctp_disposition sctp_sf_do_5_1D_ce()

Vendor

Microsoft Security Response Center (MSRC)

Published

May 31, 2026

Last Modified

—

🔗 CVE IDs covered (1)

CVE-2025-40187 →

🎯 Affected products1

azl3 kernel 6.6.112.1-2 on Azure Linux 3.0

✅ Remediation

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

🔗 References (2)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-40187
referencehttps://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade