What is CVE-2025-37945?

CVE-2025-37945 is a security advisory published by Microsoft Security Response Center (MSRC) with Medium severity. net: phy: allow MDIO bus PM ops to start/stop state machine for phylink-controlled PHY

Which CVE IDs does CVE-2025-37945 cover?

CVE-2025-37945 covers the following CVE IDs: CVE-2025-37945. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2025-37945?

CVE-2025-37945 has a CVSS v3 base score of 5.5, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2025-37945?

CVE-2025-37945 affects 10 products, including: azl3 kernel 6.6.112.1-2 on Azure Linux 3.0; azl3 kernel 6.6.116.1-1 on Azure Linux 3.0; azl3 kernel 6.6.117.1-1 on Azure Linux 3.0; azl3 kernel 6.6.119.3-1 on Azure Linux 3.0; azl3 kernel 6.6.119.3-3 on Azure Linux 3.0; and others — see the full list on the advisory page.

CVE-2025-37945MediumCVSS 5.5

net: phy: allow MDIO bus PM ops to start/stop state machine for phylink-controlled PHY

Vendor

Microsoft Security Response Center (MSRC)

Published

May 31, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2025-37945 →

🎯 Affected products10

azl3 kernel 6.6.112.1-2 on Azure Linux 3.0
azl3 kernel 6.6.116.1-1 on Azure Linux 3.0
azl3 kernel 6.6.117.1-1 on Azure Linux 3.0
azl3 kernel 6.6.119.3-1 on Azure Linux 3.0
azl3 kernel 6.6.119.3-3 on Azure Linux 3.0
azl3 kernel 6.6.121.1-1 on Azure Linux 3.0
cbl2 kernel 5.15.186.1-1 on CBL Mariner 2.0
cbl2 kernel 5.15.200.1-1 on CBL Mariner 2.0
cbl2 kernel 5.15.202.1-1 on CBL Mariner 2.0
cbl2 kernel 5.15.202.1-1 on CBL-Mariner 2.0

✅ Remediation

KBRelease Notes (Security Update)

🔗 References (2)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-37945
referencehttps://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade