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")

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EPSS — Exploit Prediction

0.0002

Probability of exploitation

0.04%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

References

Other 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 https://git.kernel.org/stable/c/b7fed917f84e484e06c5e9926746d0b524e3a93e https://git.kernel.org/stable/c/cc7398447810c9450c90d092efe9997569f8d96f https://git.kernel.org/stable/c/d4a400a6a4c4d49f77a04a3f401df5ae1a10657c

Frequently Asked Questions

What is 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")

How do I check if I'm vulnerable to CVE-2026-43425? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.