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CVE-2026-43324

kernel: USB: dummy-hcd: Fix interrupt synchronization error

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Severity

Low

Red Hat Product Security

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CVSS

Review impact separately from score.

Published · May 8, 2026

Updated · October 20, 2026

Description

A flaw was found in the Linux kernel's dummy-hcd driver. This vulnerability stems from an interrupt synchronization error where emulated interrupts can occur after the system attempts to synchronize interrupt handlers. This timing issue creates a race condition, potentially allowing a callback handler to execute when the associated gadget driver is no longer bound, which could lead to system instability or unexpected behavior.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CWE-364 · Signal Handler Race Condition