In the Linux kernel, the following vulnerability has been resolved:
media: uvcvideo: Fix deadlock if uvc_status_stop is called from async_ctrl.work
If a UVC camera has an asynchronous control, uvc_status_stop may be called from async_ctrl.work:
uvc_ctrl_status_event_work() uvc_ctrl_status_event() uvc_ctrl_clear_handle() uvc_pm_put() uvc_status_put() uvc_status_stop() cancel_work_sync()
This will cause a deadlock, since cancel_work_sync will wait for uvc_ctrl_status_event_work to complete before returning.
Fix this by returning early from uvc_status_stop if we are currently in the work function. flush_status now remains false until uvc_status_start is called again, ensuring that uvc_ctrl_status_event_work won't resubmit the URB.
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Redhat_linux | — | No solution exists | Aug 20, 2026 | Aug 15, 2026 |
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