Linux kernel meson amlogic-a4 deadlock pinconf-pins sysfs
CVE-2026-64521 Published on July 25, 2026
pinctrl: meson: amlogic-a4: fix deadlock issue
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.
Products Associated with CVE-2026-64521
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Affected Versions
Linux:- Version 6e9be3abb78c2f6c97a51070004a5165702f0ed9 and below e917713f013423069782ff554935c7a5d4266783 is affected.
- Version 6e9be3abb78c2f6c97a51070004a5165702f0ed9 and below 744ac926c0e55267a10b49b5b72582afef4ad49f is affected.
- Version 6e9be3abb78c2f6c97a51070004a5165702f0ed9 and below e72ce029810390eb987a036fb2c8a5da9a23b685 is affected.
- Version 6.15 is affected.
- Before 6.15 is unaffected.
- Version 6.18.34, <= 6.18.* is unaffected.
- Version 7.0.11, <= 7.0.* is unaffected.
- Version 7.1, <= * is unaffected.