CVE-2026-64429

kernel: gpio: eic-sprd: use raw_spinlock_t in the irq startup path

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Severity

Unknown

Red Hat Product Security

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CVSS

Review impact separately from score.

Published · July 25, 2026

Updated · July 30, 2026

Description

A flaw was found in the Linux kernel. The Spreadtrum EIC (External Interrupt Controller) driver incorrectly uses a standard spinlock in a critical interrupt handling path. When running on a PREEMPT_RT (Preemptible Real-Time) kernel, this can cause the system to attempt to sleep in an invalid context. This issue can lead to a kernel panic, resulting in a Denial of Service (DoS) for the affected system.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CWE-663 · Use of a Non-reentrant Function in a Concurrent Context