CVE-2026-43340

kernel: comedi: Reinit dev->spinlock between attachments to low-level drivers

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Severity

Unknown

Red Hat Product Security

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CVSS

Review impact separately from score.

Published · May 8, 2026

Updated · June 28, 2026

Description

A flaw was found in the comedi subsystem of the Linux kernel. This vulnerability arises when a comedi_device is reattached to different low-level drivers using the COMEDI_DEVCONFIG ioctl command. A local user with appropriate privileges could exploit this by repeatedly attaching the device, leading to inconsistent spin-lock states. This inconsistency may cause system instability or unexpected behavior within the kernel.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CWE-909 · Missing Initialization of Resource