preempt rt

  1. CVE-2025-39745 RCU Splat in PREEMPT_RT Kernels and Azure Linux Attestations

    The Linux kernel change tracked as CVE-2025-39745 fixes a spurious “splat” in the RCU torture test harness when kernels are built with the PREEMPT_RT real‑time configuration; Microsoft’s short public notice that “Azure Linux includes this open‑source library and is therefore potentially...
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  2. CVE-2025-38335: Linux gpio-keys fix in PREEMPT_RT and Azure Linux

    The Linux kernel fix tracked as CVE-2025-38335 patches a correctness problem in the gpio-keys input driver that could cause a “sleep while atomic”/kernel BUG on PREEMPT_RT (real‑time) kernel builds; Microsoft’s public advisory currently lists Azure Linux as the Microsoft product that includes...

  3. CVE-2025-21825: Fix canceling running bpf timer on PREEMPT RT kernels

    Title: CVE-2025-21825 — bpf: “Cancel the running bpf_timer through kworker for PREEMPT_RT” (what happened, who’s affected, and what to do) Date: March 6, 2025 (published / CVE assignment) — updated summary for sysadmins (Dec 7, 2025) Summary A kernel-level locking problem involving BPF map...
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  4. LoongArch KVM CVE-2024-53089 Fix: Timers Expire in Hardirq Context on PREEMPT_RT

    A critical Linux-kernel fix for LoongArch KVM addresses a scheduling-in-atomic-context bug that can crash or render a host unavailable: CVE-2024-53089 patches KVM timer handling so that high-resolution timers (hrtimers) used by the LoongArch KVM backend are allowed to expire in hard interrupt...