VYPR
Medium severity5.5NVD Advisory· Published Mar 12, 2025· Updated May 12, 2026

CVE-2025-21859

CVE-2025-21859

Description

In the Linux kernel, the following vulnerability has been resolved:

USB: gadget: f_midi: f_midi_complete to call queue_work

When using USB MIDI, a lock is attempted to be acquired twice through a re-entrant call to f_midi_transmit, causing a deadlock.

Fix it by using queue_work() to schedule the inner f_midi_transmit() via a high priority work queue from the completion handler.

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Affected products

85

Patches

Vulnerability mechanics

References

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