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CVE-2026-80802: 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: nfc: fdp: bound the device-reported read length and fix an skb leak fdp_nci_i2c_read() takes the next packet length from two device-supplied bytes and never validates it. The value is a u16 used as the i2c_master_recv() count into a 261-byte on-stack buffer: a malicious, counterfeit or malfunctioning controller (or an i2c bus interposer) can drive it far past the buffer for a stack out-of-bounds write that clobbers the canary and return address, or below the minimum frame size (directly, or by truncating the computed sum) so the header/LRC strip and the next length read run past a short receive. Reject a length outside [FDP_NCI_I2C_MIN_PAYLOAD, FDP_NCI_I2C_MAX_PAYLOAD], as a corrupted packet already is, and force resynchronization. The same loop allocates one data skb per iteration and assumes a length packet followed by a data packet; a device that sends two data packets in one call leaks the first skb when the second allocation overwrites it. Free a previously allocated skb before allocating the next.

    Засегнати продукти

    • Linux Linux: a06347c04c13e380afce0c9816df51f00b83faf1 преди d9498ab9a78cb63d78dbe4f221d8cc6c91f285ee; a06347c04c13e380afce0c9816df51f00b83faf1 преди 1fc32327b927a6e2cde086f82575c29880844228; a06347c04c13e380afce0c9816df51f00b83faf1 преди 8d2c243b79854628ff076c38748c020042f02f57; a06347c04c13e380afce0c9816df51f00b83faf1 преди fc3c2bd5b1ec6c7cbc8a50e32d9bcec114f25463; a06347c04c13e380afce0c9816df51f00b83faf1 преди 0d723090645b82c1cb27cfd7ebf81f0e7c96bcae; a06347c04c13e380afce0c9816df51f00b83faf1 преди db7e464b350969c6ea8340de00d9796e5fd5123b; a06347c04c13e380afce0c9816df51f00b83faf1 преди e5eec121f2c3bc4c7022613bedd9121a8aa4c949; a06347c04c13e380afce0c9816df51f00b83faf1 преди 1aa3fc769b0c45bd19f8dab1697084c2b3f6d706; a06347c04c13e380afce0c9816df51f00b83faf1 преди 7ad21dcfeb5181af0c3ee2608808c0c0a5283aa1
    • Linux Linux: 4.4; преди 4.4; 5.10.267 до 5.10.*; 5.15.218 до 5.15.*; 6.1.185 до 6.1.*; 6.6.154 до 6.6.*; 6.12.106 до 6.12.*; 6.18.47 до 6.18.*; 7.1.11 до 7.1.*; 7.2.1 до 7.2.*; от 7.3 нататък

    История

    • 4 септември 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-80802: Linux | freedomonline.bg