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CVE-2026-63934: 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: iio: gyro: itg3200: fix i2c read into the wrong stack location itg3200_read_all_channels() takes `__be16 *buf' as a parameter and fills the i2c_msg destination as `(char *)&buf'. Since `buf' is the parameter (a pointer), `&buf' is the address of the local pointer slot on the stack of itg3200_read_all_channels(), not the address of the caller's scan buffer. The (char *) cast hides the type mismatch. i2c_transfer() therefore writes ITG3200_SCAN_ELEMENTS * sizeof(s16) = 8 bytes into the parameter's stack slot, which is discarded when the function returns. The caller's scan buffer in itg3200_trigger_handler() is never written to, so iio_push_to_buffers_with_timestamp() pushes uninitialised stack contents to userspace via /dev/iio:deviceX every scan -- both a functional bug (no actual gyroscope or temperature data is delivered through the triggered buffer) and an information leak. The non-buffered read_raw() path is unaffected: it goes through itg3200_read_reg_s16() which uses `&out' on a local s16 value, where that is correct. Drop the spurious `&' so the i2c read writes into the caller's buffer.

    Засегнати продукти

    • Linux Linux: 9dbf091da080508e9f632d307f357beb79a0766b преди 90e809376b0f0d1ddec2eec954aecdd2a5b40b0e; 9dbf091da080508e9f632d307f357beb79a0766b преди 8654b5e2617819ff4f7c78071dfd0275e971a9b6; 9dbf091da080508e9f632d307f357beb79a0766b преди b64dd5f3b38911054cbcc570df617e3e8e75e562; 9dbf091da080508e9f632d307f357beb79a0766b преди 31bbd4b87dd6701fa10e03ba7f6268e49e178d16; 9dbf091da080508e9f632d307f357beb79a0766b преди 63203bd072b613c18c237b906b1c9d2dc4527337; 9dbf091da080508e9f632d307f357beb79a0766b преди 15a0b3f33ffb6c78b3de6f69b026ceb09b973dd1; 9dbf091da080508e9f632d307f357beb79a0766b преди cfc3283859cfdeacadf80d5e6880bdf871ffeaa6; 9dbf091da080508e9f632d307f357beb79a0766b преди 6bdc3023d62ed5c7d591f0eb27a5adb37fb892ae
    • Linux Linux: 3.9; преди 3.9; 5.10.259 до 5.10.*; 5.15.210 до 5.15.*; 6.1.176 до 6.1.*; 6.6.143 до 6.6.*; 6.12.93 до 6.12.*; 6.18.35 до 6.18.*; 7.0.12 до 7.0.*; от 7.1 нататък

    История

    • 19 юли 2026 Публикувано

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    CVE-2026-63934: Linux | freedomonline.bg