CVE-2026-74437
Description
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.
How to fix
- Linux Linux3659deaf7bf690510899a73906b772740d94342c, 7f6c5fe1633272c926361b73d83dfc6ae01b1504, 6d27f92c54ce28cfbd2a8a479a96d6f4a781b7d2 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | a32d9c41bdb86e09ce731aa5fd3add89ac2103a5 ≤ v < 3659deaf7bf690510899a73906b772740d94342c, a32d9c41bdb86e09ce731aa5fd3add89ac2103a5 ≤ v < 7f6c5fe1633272c926361b73d83dfc6ae01b1504, a32d9c41bdb86e09ce731aa5fd3add89ac2103a5 ≤ v < 6d27f92c54ce28cfbd2a8a479a96d6f4a781b7d2, 6.16 | 3659deaf7bf690510899a73906b772740d94342c, 7f6c5fe1633272c926361b73d83dfc6ae01b1504, 6d27f92c54ce28cfbd2a8a479a96d6f4a781b7d2 |
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