CVE-2026-97501

/// Technical description

In the Linux kernel, the following vulnerability has been resolved:

pinctrl: mediatek: paris: bypass pinctrl GPIO layer in set GPIO direction

pinctrl_gpio_direction_input() / pinctrl_gpio_direction_output() take

the pinctrl mutex. This causes a gpiochip operations to need to sleep.

Worse yet, the .can_sleep field in the gpiochip is not set. This causes

the shared GPIO proxy to trip over, as it uses gpiod_cansleep() to check

whether it can use a spinlock or needs a mutex. In this case, it ends

up taking a spinlock, then calls pinctrl_gpio_direction_output(), which

takes a mutex. This causes a huge warning.

While this class of Mediatek hardware does not have separate clear/set

registers, the pinctrl context has a spinlock that is taken whenever

a register read-modify-write is done. Also, once the GPIO function is

selected / muxed in, further GPIO operations do not involve pinctrl

operations or state. The GPIO direction and level values do not require

toggling the pinmux or any other p

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References