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CVE-2026-98094: 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: staging: fbtft: make dirty_lock IRQ-safe fbtft_mkdirty() can be reached from the fbcon rendering path while processing printk() in hardirq context. Meanwhile, dirty_lock is also taken by fbtft_deferred_io() in workqueue context with local interrupts enabled. Lockdep reports a possible IRQ lock inversion involving dirty_lock and console_owner. A hardirq can interrupt a CPU holding dirty_lock and enter the console rendering path, which can attempt to acquire dirty_lock again. The following lockdep report was observed on an RK3566 system with CONFIG_PROVE_LOCKING enabled: WARNING: possible irq lock inversion dependency detected swapper/2/0 just changed the state of lock: (console_owner){-...}-{0:0} but this lock took another, HARDIRQ-unsafe lock in the past: (&par->dirty_lock){+.+.}-{2:2} CPU0 CPU1 ---- ---- lock(&par->dirty_lock); local_irq_disable(); lock(console_owner); lock(&par->dirty_lock); <Interrupt> lock(console_owner); *** DEADLOCK *** Use spin_lock_irqsave() for fbtft_mkdirty() and spin_lock_irq() for fbtft_deferred_io(). They only access the dirty line range, so the IRQ-off regions remain short.

    Засегнати продукти

    • Linux Linux: c296d5f9957c03994a699d6739c27d4581a9f6c7 преди 0843298b159599ee7bc6d14800efdb4bc7349706; c296d5f9957c03994a699d6739c27d4581a9f6c7 преди a323066337ed85c38decfc7f6bbf42f27605dff1; c296d5f9957c03994a699d6739c27d4581a9f6c7 преди f2451e18826eb6a33ea51419f39bdd2eb99fa1ea; c296d5f9957c03994a699d6739c27d4581a9f6c7 преди 10cc145b873670438d3b105133dffdae70822db6; c296d5f9957c03994a699d6739c27d4581a9f6c7 преди 2a609e29efbba79f9abd68c4ec8a2bd7ecf291e7; c296d5f9957c03994a699d6739c27d4581a9f6c7 преди f0c869df2c33793c8828acaab3e4a5e0176f9f00; c296d5f9957c03994a699d6739c27d4581a9f6c7 преди dcb48fde8003492256dee45815144aa5ed26ce7c; c296d5f9957c03994a699d6739c27d4581a9f6c7 преди f576944a59f31bcffff121117ebf452c5dd162b7
    • Linux Linux: 4.0; преди 4.0; 5.10.271 до 5.10.*; 5.15.222 до 5.15.*; 6.1.189 до 6.1.*; 6.6.158 до 6.6.*; 6.12.111 до 6.12.*; 6.18.53 до 6.18.*; 7.2.7 до 7.2.*; от 7.3 нататък

    История

    • 25 септември 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-98094: Linux | freedomonline.bg