CVE-2026-93274
In the Linux kernel, the following vulnerability has been resolved: pinctrl: bcm2835: Don't remove an unregistered GPIO chip If the devm_pinctrl_register() function fails, bcm2835_pinctrl_probe() calls gpiochip_remove() before gpiochip_add_data() has registered the GPIO chip. This means that upon failure the gpio_chip.gpiodev is NULL resulting in a null pointer dereference inside the gpiochip_remove() function. Remove the unnecessary function call to gpiochip_remove(). No GPIO cleanup is required because the GPIO chip has not yet been registered. Without this change there is potential for a kernel panic upon registration failure
Debolezza
In the Linux kernel, the following vulnerability has been resolved: pinctrl: bcm2835: Don't remove an unregistered GPIO chip If the devm_pinctrl_register() function fails, bcm2835_pinctrl_probe() calls gpiochip_remove() before gpiochip_add_data() has registered the GPIO chip. This means that upon failure the gpio_chip.gpiodev is NULL resulting in a null pointer dereference inside the gpiochip_remove() function. Remove the unnecessary function call to gpiochip_remove(). No GPIO cleanup is required because the GPIO chip has not yet been registered. Without this change there is potential for a kernel panic upon registration failure
Riferimenti
- https://git.kernel.org/stable/c/32711f77db0641e57fd96fdc013bf1286b9f2514
- https://git.kernel.org/stable/c/3b978fd0a3092b25561ac26bc1a87149fa981ddc
- https://git.kernel.org/stable/c/68ea6dd23b732081826c36033835468383487864
- https://git.kernel.org/stable/c/727f043d699ab0d5d87122c2177f2b45fbe58d35
- https://git.kernel.org/stable/c/b8535f5c77cc61352d02a0c038a280127a8b8208
- https://git.kernel.org/stable/c/d428863ca8baa4e9eaf781266ac219b017dcf277
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