CVE-2026-43425

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”)

More information : https://git.kernel.org/stable/c/15536f6c15f48037a1672cbdea53266d67861ff6