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CVE-2026-74551: Linux

7.8

CVSS 3.1

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Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)

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Атакува се

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Време до експлоатация

Атакува се локално, без особени условия, с обикновен потребителски вход и без действие от потребителя.

    Описание

    Оригинално описание

    In the Linux kernel, the following vulnerability has been resolved: hwmon: (nzxt-smart2) DMA-align output buffer Sashiko reports: When send_output_report() calls hid_hw_output_report(), the underlying USB HID core calls usb_interrupt_msg() which maps this buffer directly for DMA. When the DMA mapping flushes or invalidates the cacheline, it will corrupt the adjacent variables (mutex, update_interval) that were modified concurrently by the CPU. This causes memory corruption due to cacheline sharing on non-coherent CPU architectures (such as ARM or MIPS). The DMA API debugging tool (CONFIG_DMA_API_DEBUG) will trigger runtime warnings for this violation. Any operation that triggers send_output_report() (like setting a fan speed or updating the interval) causes the USB DMA mapping. On systems with non-coherent caches, this structural bug causes immediate and deterministic memory corruption. Align the output buffer to ARCH_DMA_MINALIGN to fix the problem.

    Засегнати продукти

    • Linux Linux: 53e68c20aeb1e23419bed811aa3a309ceda200f9 преди 81a6593b1c8dfb2694cd0ce39be01212d2b8436c; 53e68c20aeb1e23419bed811aa3a309ceda200f9 преди 70ad543ce81f368411b6c721265a3b2d7ab4fda4; 53e68c20aeb1e23419bed811aa3a309ceda200f9 преди 51a76bc1b8e717ee3fc0d84f15ac51490ca5f76f; 53e68c20aeb1e23419bed811aa3a309ceda200f9 преди 2332d35aaf206c17acf848522817252732596676; 53e68c20aeb1e23419bed811aa3a309ceda200f9 преди 6a2dbce5da2d2163a5b684acf68a0e54582ff0fa; 53e68c20aeb1e23419bed811aa3a309ceda200f9 преди 080bbf42faf77e6489ab30d5114c5f8f6ccbb1b8
    • Linux Linux: 5.17; преди 5.17; 6.1.183 до 6.1.*; 6.6.151 до 6.6.*; 6.12.103 до 6.12.*; 6.18.44 до 6.18.*; 7.1.8 до 7.1.*; от 7.2 нататък

    История

    • 15 август 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-74551: Linux | freedomonline.bg