ptp subsystem

About this tag
The PTP subsystem tag on WindowsForum.com covers discussions about the Precision Time Protocol (PTP) subsystem in the Linux kernel, including security vulnerabilities and patches. Recent content highlights CVE-2025-40057, a resource-allocation bug in the PTP subsystem that was fixed by bounding the max_vclocks parameter to prevent unsafe kcalloc allocations. This tag is relevant for users interested in Linux kernel development, time synchronization protocols, and kernel security fixes. While the tag is Linux-focused, it may also be of interest to enterprise IT professionals managing time-sensitive systems or cross-platform environments where PTP is used.

  1. Linux Kernel PTP Patch Bound max_vclocks to Prevent Unsafe kcalloc (CVE-2025-40057)

    The Linux kernel received a targeted fix for CVE-2025-40057 — a resource‑allocation/validation bug in the PTP (Precision Time Protocol) subsystem that adds an upper bound to the user‑controlled max_vclocks parameter so that kernel allocations performed with kcalloc cannot be overflowed or...
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    • cve 2025 40057 kernel hardening linux kernel ptp subsystem
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