CVE-2026-64521 – pinctrl: meson: amlogic-a4: fix deadlock issue

CVE ID :CVE-2026-64521

Published : July 25, 2026, 9:14 a.m. | 37 minutes ago

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

pinctrl: meson: amlogic-a4: fix deadlock issue

Accessing the pinconf-pins sysfs node may deadlock.

pinconf_pins_show() holds pctldev->mutex, and the platform driver
calls pinctrl_find_gpio_range_from_pin(), which tries to acquire
the same mutex again, leading to a deadlock.

Use pinctrl_find_gpio_range_from_pin_nolock() to fix this issue.

Severity: 0.0 | NA

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