CVE-2025-21859
USB: gadget: f_midi: f_midi_complete to call queue_work
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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.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
- https://git.kernel.org/stable/c/1f10923404705a94891e612dff3b75e828a78368
- https://git.kernel.org/stable/c/24a942610ee9bafb2692a456ae850c5b2e409b05
- https://git.kernel.org/stable/c/4ab37fcb42832cdd3e9d5e50653285ca84d6686f
- https://git.kernel.org/stable/c/727dee0857946b85232526de4f5a957fe163e89a
- https://git.kernel.org/stable/c/8aa6b4be1f4efccbfc533e6ec8841d26e4fa8dba
References (12)
SSVC — Action Prioritization
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
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