CVE-2025-38335

Name of the Vulnerable Software and Affected Versions: Linux kernel (affected versions not specified)

Description: The Linux kernel contains a flaw related to the handling of interrupts within the gpio-keys driver when the PREEMPT RT patch is enabled. Specifically, the gpio keys irq timer() callback function operates in hard interrupt context but attempts to acquire a spinlock, which is not permitted in that context as it is converted to a real-time spinlock. This can lead to a "sleeping function called from invalid context" bug. The issue arises because input event() takes a spin lock, and gpio keys irq timer() is called within a hard interrupt context. The fix involves relaxing the hrtimer to avoid using the hard context.

Recommendations: At the moment, there is no information about a newer version that contains a fix for this vulnerability.