CVE-2026-43425: usb: image: mdc800: kill download URB on timeout
In the Linux kernel, the following vulnerability has been resolved:
usb: image: mdc800: kill download URB on timeout
mdc800deviceread() submits downloadurb 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 usbsubmiturb():
"URB submitted while active"
Check the return value of waiteventtimeout() 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
Remediation
Event History
Frequently Asked Questions
What is the severity of CVE-2026-43425?
CVE-2026-43425 has a medium severity rating of 5.5.
How do I fix CVE-2026-43425?
To fix CVE-2026-43425, apply the available patch from the Linux kernel.
What does CVE-2026-43425 affect?
CVE-2026-43425 affects the Linux kernel in relation to handling timeout events in the mdc800 device.
What is the potential impact of CVE-2026-43425?
The potential impact of CVE-2026-43425 is that an unresponsive device may not properly terminate a download operation, leading to resource leaks.
When was CVE-2026-43425 published?
CVE-2026-43425 was published on May 8, 2026.