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CVE-2026-99105: Linux

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Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)

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    Описание

    Оригинално описание

    In the Linux kernel, the following vulnerability has been resolved: sched_ext: Fix stall when a task enqueued with SCX_ENQ_LAST lands back on its CPU's local DSQ With SCX_OPS_ENQ_LAST, the last runnable task on a CPU is passed to ops.enqueue() instead of being kept running. Exiting tasks without SCX_OPS_ENQ_EXITING, migration disabled tasks without SCX_OPS_ENQ_MIGRATION_DISABLED and tasks on an offline rq skip ops.enqueue() and go straight to the local DSQ. This happens in put_prev_task_scx() after the pick has settled on idle, so nothing reschedules the CPU, which idles with the task queued until an unrelated wakeup lands on it or the watchdog fires. scx_mitosis, which sets SCX_OPS_ENQ_LAST without SCX_OPS_ENQ_EXITING, hit this during mass cgroup teardown: exiting tasks stuck in exit_mmap() for over 40 seconds. A task put on the local DSQ runs, as anywhere else. If the SCX_ENQ_LAST enqueue left the task on this CPU's local DSQ, set need_resched on the task being switched in, as proxy_resched_idle() does. resched_curr() would flag the task being put instead, and __schedule() clears that right after the pick.

    Засегнати продукти

    • Linux Linux: f0e1a0643a59bf1f922fa209cec86a170b784f3f преди ea47eec058fc1b6a3c3c54870d24a8bdcb3e204d; f0e1a0643a59bf1f922fa209cec86a170b784f3f преди 8d891c218016b6145993e082e7f732cb69dd0e29; f0e1a0643a59bf1f922fa209cec86a170b784f3f преди 396ba6f04da3fd1fb5a3d1c9535bef3f967f4e59; f0e1a0643a59bf1f922fa209cec86a170b784f3f преди 7a9df76679633cf26e0fea882a684012c6ec245a
    • Linux Linux: 6.12; преди 6.12; 6.12.115 до 6.12.*; 6.18.59 до 6.18.*; 7.2.13 до 7.2.*; от 7.3 нататък

    История

    • 28 октомври 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-99105: Linux | freedomonline.bg