one step timestamping

About this tag
One step timestamping is a hardware-assisted method for inserting precise timestamps into network packets at the moment of transmission, commonly used in Precision Time Protocol (PTP) implementations. Discussions on WindowsForum.com cover a Linux kernel fix for a memory leak in the MSCC PHY PTP code, identified as CVE-2025-38148, which affects systems using one-step hardware timestamping. The vulnerability could cause kernel memory consumption on devices like embedded appliances and telecom gear, though it is not a remote code execution threat. The tag focuses on the technical aspects of one-step timestamping, including its role in PTP, hardware support, and related kernel patches.

  1. Linux Kernel PTP One-Step Leak Fixed CVE-2025-38148

    A small, surgical change to the Linux kernel’s MSCC PHY PTP code closes a subtle but operationally important memory leak that could quietly consume kernel memory on systems that use one‑step hardware timestamping. The fix—recorded as CVE‑2025‑38148—ensures that frames for which the NIC hardware...
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