phy mdio

About this tag
The tag phy mdio covers Linux kernel issues related to the Physical Layer (PHY) and the Management Data Input/Output (MDIO) interface, particularly in the context of suspend/resume lifecycle bugs. A notable example is CVE-2025-37945, which describes a defect where the PHY state machine continues running across suspend/resume cycles, potentially causing warnings or availability impacts on network interfaces. This tag is relevant for system administrators and IT professionals managing Linux-based systems, especially those concerned with kernel stability, network hardware reliability, and timely application of security patches. Discussions under this tag focus on diagnosing, testing, and mitigating such PHY/MDIO-related defects to maintain system availability.

  1. CVE-2025-37945: Linux PHY MDIO suspend resume bug affects availability

    A subtle lifecycle bug in the Linux kernel’s PHY/MDIO handling — tracked as CVE‑2025‑37945 — can leave the PHY state machine running across suspend/resume cycles and produce warnings or availability impacts for affected network interfaces, and operators should treat this as an availability-first...
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    • linux kernel network availability phy mdio suspend resume
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    • Forum: Security Alerts