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CVE-2026-80783: 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: HID: magicmouse: prevent unbounded recursion in magicmouse_raw_event() magicmouse_raw_event() handles DOUBLE_REPORT_ID (0xf7) packets, which pack two touch reports into one, by splitting the packet and calling itself on each half. The only guard against runaway recursion is a "size < 1" check, which stops zero-sized calls but does not bound the recursion depth. A malicious HID device that matches this driver can send a report starting with DOUBLE_REPORT_ID and filled with the sequence [0xf7, 0x00]. Each level consumes two bytes and recurses on the remainder, so an incoming report of up to HID_MAX_BUFFER_SIZE (16 KiB) drives roughly 8000 nested calls. That easily exhausts the 16 KiB kernel stack, leading to a stack overflow: a panic with CONFIG_VMAP_STACK, or memory corruption without it. A double report only ever wraps two normal reports; it is never legitimately nested. Refuse to re-enter the DOUBLE_REPORT_ID case from a recursive call so the recursion depth is bounded to two, while all valid packets keep being parsed exactly as before.

    Засегнати продукти

    • Linux Linux: a462230e16acc8664145216da3c928d03556691a преди 26c45abed62536aabf4033fb6d64cf72e93374e9; a462230e16acc8664145216da3c928d03556691a преди 8a10a624996f16628234306b46f0cf36707d78bd; a462230e16acc8664145216da3c928d03556691a преди d16df755b4493b6d37803c628b2c621d096796a8; a462230e16acc8664145216da3c928d03556691a преди bec338b07beb883726b32192c8f01c601bc76fda; a462230e16acc8664145216da3c928d03556691a преди 70589b0c005db003f6d8ae4db3c4d54fed7b83e4; a462230e16acc8664145216da3c928d03556691a преди a33a596d3ad8dfe6c96a368097a028abeee16c17; a462230e16acc8664145216da3c928d03556691a преди d095de37f78c5f32a4252ef0f99b84ba76550b86; a462230e16acc8664145216da3c928d03556691a преди db8d634128d2ba88d79c0b601e983ebe14bb0519
    • Linux Linux: 2.6.37; преди 2.6.37; 5.15.220 до 5.15.*; 6.1.187 до 6.1.*; 6.6.156 до 6.6.*; 6.12.108 до 6.12.*; 6.18.49 до 6.18.*; 7.1.11 до 7.1.*; 7.2.1 до 7.2.*; от 7.3 нататък

    История

    • 4 септември 2026 Публикувано

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    CVE-2026-80783: Linux | freedomonline.bg