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CVE-2025-21783 – Linux Kernel GPIOlib NULL Pointer Dereference Vulnerability

The following table lists the changes that have been made to the
CVE-2025-21783 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution
of a vulnerability, and for identifying the most recent changes that may
impact the vulnerability’s severity, exploitability, or other characteristics.

  • New CVE Received
    by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Feb. 27, 2025

    Action Type Old Value New Value
    Added Description In the Linux kernel, the following vulnerability has been resolved:

    gpiolib: Fix crash on error in gpiochip_get_ngpios()

    The gpiochip_get_ngpios() uses chip_*() macros to print messages.
    However these macros rely on gpiodev to be initialised and set,
    which is not the case when called via bgpio_init(). In such a case
    the printing messages will crash on NULL pointer dereference.
    Replace chip_*() macros by the respective dev_*() ones to avoid
    such crash.
    Added Reference https://git.kernel.org/stable/c/189fb76215e479c10731baabb50f1a352d2078f5
    Added Reference https://git.kernel.org/stable/c/4d9b2b62e1136d10f661ec4c0c268140b6f74f4f
    Added Reference https://git.kernel.org/stable/c/7b4aebeecbbd5b5fe73e35fad3f62ed21aa7ef44
    Added Reference https://git.kernel.org/stable/c/a7052afa9eae2239e25943baa8817a6a56e8aa68
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