intel pstate

About this tag
The intel_pstate tag covers discussions about the Linux kernel's CPU frequency scaling driver for Intel processors. Recent content focuses on a security fix for CVE-2025-40194, which addressed an object lifecycle bug in the intel_pstate driver that could cause kernel crashes during CPU hotplug removal in virtualized environments. The tag includes technical details about P-state management, driver patches, and kernel stability. Topics are relevant to Linux system administrators, kernel developers, and IT professionals managing Intel-based servers or virtualized environments where CPU hotplug is used.

  1. Linux Kernel CVE-2025-40194 Intel pstate fix reduces hotplug crash risk

    A recently disclosed Linux kernel defect, tracked as CVE‑2025‑40194, fixes an object lifecycle bug in the intel_pstate CPU frequency driver that could — under narrow and largely virtualized scenarios — cause a kernel crash during CPU device hot removal; vendors and the kernel stable trees have...
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    • cpu hotplug intel pstate linux kernel stable backport
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    • Forum: Security Alerts