CVE-2026-43425

Description

In the Linux kernel, the following vulnerability has been resolved: usb: image: mdc800: kill download URB on timeout mdc800_device_read() submits download_urb and waits for completion. If the timeout fires and the device has not responded, the function returns without killing the URB, leaving it active. A subsequent read() resubmits the same URB while it is still in-flight, triggering the WARN in usb_submit_urb(): "URB submitted while active" Check the return value of wait_event_timeout() and kill the URB if it indicates timeout, ensuring the URB is complete before its status is inspected or the URB is resubmitted. Similar to - commit 372c93131998 ("USB: yurex: fix control-URB timeout handling") - commit b98d5000c505 ("media: rc: iguanair: handle timeouts")

References

• https://git.kernel.org/stable/c/15536f6c15f48037a1672cbdea53266d67861ff6
• https://git.kernel.org/stable/c/155f471e38aa516f6c58c2ae03ca3dc222fa2fdb
• https://git.kernel.org/stable/c/1be3b77de4eb89af8ae2fd6610546be778e25589
• https://git.kernel.org/stable/c/9bf877cc67309b2a063b0087c3ad8585fb11cec3
• https://git.kernel.org/stable/c/9fa5a49760979ba016506fe292a431c8b83f043e