cpu hotplug

  1. CVE-2024-35801: Linux kernel fix for XRSTOR #NM xfd_state mismatch

    The Linux kernel bug tracked as CVE-2024-35801 creates a mismatch between a cached per‑CPU state (xfd_state) and the processor model-specific register MSR_IA32_XFD, allowing normal FP/SIMD context-management operations to trigger a machine‑check (#NM) during XRSTOR and crash the kernel —...

  2. 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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  3. Linux zswap UAF CVE-2025-21693: CPU hotplug fix with mutex

    The Linux kernel has a newly cataloged use‑after‑free in the zswap compression path—tracked as CVE‑2025‑21693—that can be triggered when a CPU is hot‑unplugged while compression or decompression is still using per‑CPU resources, allowing those resources to be freed under active use and producing...