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CVE-2026-43425

5.5 · MEDIUM

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.

Published May 8, 2026EPSS 0.16%

Overview

CVE-2026-43425 is a medium-severity vulnerability. It was published on May 8, 2026 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical 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")

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/15536f6c15f48037a1672cbdea53266d67861ff6Refgit.kernel.org/stable/c/155f471e38aa516f6c58c2ae03ca3dc222fa2fdbRefgit.kernel.org/stable/c/1be3b77de4eb89af8ae2fd6610546be778e25589Refgit.kernel.org/stable/c/9bf877cc67309b2a063b0087c3ad8585fb11cec3Refgit.kernel.org/stable/c/9fa5a49760979ba016506fe292a431c8b83f043eRefgit.kernel.org/stable/c/b7fed917f84e484e06c5e9926746d0b524e3a93eRefgit.kernel.org/stable/c/cc7398447810c9450c90d092efe9997569f8d96fRefgit.kernel.org/stable/c/d4a400a6a4c4d49f77a04a3f401df5ae1a10657c

How CyberStrike helps

Frequently asked questions

What is CVE-2026-43425?

CVE-2026-43425 is a medium-severity vulnerability. It was published on May 8, 2026 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2026-43425?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-43425?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-43425?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-43425 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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