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CVE-2026-74683: Linux

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CVSS

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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: Input: evdev - sanitize event type index when fetching event masks The user-supplied event type index passed to EVIOCGMASK / EVIOCSMASK ioctls is used to index the static counts array in evdev_get_mask_cnt() and client evmasks array in evdev_get_mask(). While the event type is architecturally bounded by EV_CNT, speculative execution may mispredict bounds checks and perform out-of-bounds loads. Sanitize the event type index in evdev_get_mask_cnt() branchlessly using array_index_mask_nospec(). This clamps the index to 0 for safe array access and forces the returned count to 0 speculatively when the index is out of bounds. We do not need additional array_index_nospec() calls in evdev_get_mask() because evdev_get_mask_cnt() speculatively forces the count (and resulting xfer_size) to 0 for out-of-bounds types, preventing any speculative memory access to client evmasks array.

    Засегнати продукти

    • Linux Linux: 06a16293f71927f756dcf37558a79c0b05a91641 преди c79b08d8fa230871a3634e34a66e591ac2d084ef; 06a16293f71927f756dcf37558a79c0b05a91641 преди f27fa9b39f925d26e034a1f382cb45523138f4ae; 06a16293f71927f756dcf37558a79c0b05a91641 преди f3fc329acad9a71b3c077237cbac20670d2358c8; 06a16293f71927f756dcf37558a79c0b05a91641 преди 5db341189bb7ff041d570dbe36ecca7e32913927; 06a16293f71927f756dcf37558a79c0b05a91641 преди 433913b4a92214d76e9f0c03ad9128fec943d5f8; 06a16293f71927f756dcf37558a79c0b05a91641 преди 4034ef247a9dde3f56660b01f0c3280dac6b1274; 06a16293f71927f756dcf37558a79c0b05a91641 преди 810e1883d4815f29c30d900ad7333d03cc2515d1; 06a16293f71927f756dcf37558a79c0b05a91641 преди 3abd29c61d2ef37c4102cf755b18be53bb9dbea6
    • Linux Linux: 4.4; преди 4.4; 5.10.265 до 5.10.*; 5.15.216 до 5.15.*; 6.1.183 до 6.1.*; 6.6.152 до 6.6.*; 6.12.104 до 6.12.*; 6.18.45 до 6.18.*; 7.1.9 до 7.1.*; от 7.2 нататък

    История

    • 22 август 2026 Публикувано

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    Първоизточници

    CVE-2026-74683: Linux | freedomonline.bg