CVE-2026-64238

kernel: gpio: shared: fix deadlock on shared proxy's parent removal

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Severity

Moderate

Red Hat Product Security

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CVSS

Review impact separately from score.

Published · July 24, 2026

Updated · October 30, 2026

Description

A flaw was found in the Linux kernel's gpio: shared component. A too wide critical section, intended to protect the offset field in the struct gpio_shared_entry, can lead to a potential deadlock. This occurs during the removal of a shared General Purpose Input/Output (GPIO) proxy's parent. A successful exploit of this vulnerability could result in a denial of service (DoS) due to system unresponsiveness.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CWE-833 · Deadlock