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CVE-2026-89753: 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: mm/vmscan: report RCU-tasks quiescent states in shrink_lruvec() I am seeing some rcu_tasks stalls in the Meta fleet during reclaim. INFO: rcu_tasks detected stalls on tasks: 0000000088620d09: .. nvcsw: 6735/6735 holdout: 1 idle_cpu: -1/8 task:GlobalCPUThread state:R running task pid:2552016 tgid:2524552 Call Trace: shrink_lruvec mem_cgroup_iter shrink_node do_try_to_free_pages try_to_free_pages __alloc_frozen_pages_noprof alloc_pages_noprof pte_alloc_one __pte_alloc handle_mm_fault Nothing promises direct reclaim returns in bounded time, and the scan loop in shrink_lruvec() only calls cond_resched(), which is a no-op on PREEMPTION kernels. Involuntary preemption is not a Tasks-RCU quiescent state, so the reclaiming task never reports one and becomes a holdout. Upgrade it to cond_resched_tasks_rcu_qs(), which reports a quiescent state even when cond_resched() does nothing. PS: This has been discussed in [1]

    Засегнати продукти

    • Linux Linux: 8315f42295d2667a7f942f154b73a86fd7cb2227 преди 4f50593c9cbc883d8c9b50148a3e8a8b1fd35f57; 8315f42295d2667a7f942f154b73a86fd7cb2227 преди 4cdc1bdf40944de5c6b118fef07ad23f07844338; 8315f42295d2667a7f942f154b73a86fd7cb2227 преди a67a00a70a7c8309ca47ea157ef3e8ed3d268f5b; 8315f42295d2667a7f942f154b73a86fd7cb2227 преди 029c9408049f7f582230322057b7075bea594fd5; 8315f42295d2667a7f942f154b73a86fd7cb2227 преди b5391676c61d94ffe3272dcf6723738b802f79e8; 8315f42295d2667a7f942f154b73a86fd7cb2227 преди 3fd50239986302cb050d3649351bcec00fa9d5ab; 8315f42295d2667a7f942f154b73a86fd7cb2227 преди cf3ba0911a1cf8680371ff113b90088edd01d2bb; 8315f42295d2667a7f942f154b73a86fd7cb2227 преди 25f52e81216884a7444bf07a606691feb09a94e3
    • Linux Linux: 3.18; преди 3.18; 5.10.270 до 5.10.*; 5.15.221 до 5.15.*; 6.1.188 до 6.1.*; 6.6.157 до 6.6.*; 6.12.109 до 6.12.*; 6.18.50 до 6.18.*; 7.2.4 до 7.2.*; от 7.3 нататък

    История

    • 11 септември 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-89753: Linux | freedomonline.bg