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CVE-2026-46001: 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: hwmon: (pt5161l) Fix bugs in pt5161l_read_block_data() Fix two bugs in pt5161l_read_block_data(): 1. Buffer overrun: The local buffer rbuf is declared as u8 rbuf[24], but i2c_smbus_read_block_data() can return up to I2C_SMBUS_BLOCK_MAX (32) bytes. The i2c-core copies the data into the caller's buffer before the return value can be checked, so the post-read length validation does not prevent a stack overrun if a device returns more than 24 bytes. Resize the buffer to I2C_SMBUS_BLOCK_MAX. 2. Unexpected positive return on length mismatch: When all three retries are exhausted because the device returns data with an unexpected length, i2c_smbus_read_block_data() returns a positive byte count. The function returns this directly, and callers treat any non-negative return as success, processing stale or incomplete buffer contents. Return -EIO when retries are exhausted with a positive return value, preserving the negative error code on I2C failure.

    Засегнати продукти

    • Linux Linux: 1b2ca93cd0592b1fcbc6f8b64e02552bc15f4bb4 преди 7eccabff1c9ec15e4b6fe186d5c147b13a9cdb4e; 1b2ca93cd0592b1fcbc6f8b64e02552bc15f4bb4 преди 95d48e37a1304d6148406c799479c0fb505aefa7; 1b2ca93cd0592b1fcbc6f8b64e02552bc15f4bb4 преди a11aa9c5fd9dfe62be7cfec1f2a7546afb77254c; 1b2ca93cd0592b1fcbc6f8b64e02552bc15f4bb4 преди 24c73e93d6a756e1b8626bb259d2e07c5b89b370
    • Linux Linux: 6.9; преди 6.9; 6.12.86 до 6.12.*; 6.18.27 до 6.18.*; 7.0.4 до 7.0.*; от 7.1 нататък

    История

    • 27 май 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-46001: Linux | freedomonline.bg