CVE-2026-43425

Summary

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")

Affected Software

VendorProductVersion RangeStatus
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 9fa5a49760979ba016506fe292a431c8b83f043eaffected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 15536f6c15f48037a1672cbdea53266d67861ff6affected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 9bf877cc67309b2a063b0087c3ad8585fb11cec3affected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 155f471e38aa516f6c58c2ae03ca3dc222fa2fdbaffected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < d4a400a6a4c4d49f77a04a3f401df5ae1a10657caffected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < b7fed917f84e484e06c5e9926746d0b524e3a93eaffected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < cc7398447810c9450c90d092efe9997569f8d96faffected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 1be3b77de4eb89af8ae2fd6610546be778e25589affected
LinuxLinux2.6.12affected
LinuxLinux0 < 2.6.12unaffected
LinuxLinux5.10.253 <= 5.10.*unaffected
LinuxLinux5.15.203 <= 5.15.*unaffected
LinuxLinux6.1.167 <= 6.1.*unaffected
LinuxLinux6.6.130 <= 6.6.*unaffected
LinuxLinux6.12.78 <= 6.12.*unaffected
LinuxLinux6.18.19 <= 6.18.*unaffected
LinuxLinux6.19.9 <= 6.19.*unaffected
LinuxLinux7.0 <= *unaffected

Weaknesses

References