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Vulnerability

CVE-2026-43425

Reference data from vuln.mlab.sh, coverage from our own index.

CVSS
5.5 Medium
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Risk score
44.0
Published
2026-05-08
Status
Published

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") A flaw was found in the Linux kernel's mdc800 USB image driver. When the driver attempts to read data from a USB device, a timeout can occur, leaving a USB Request Block (URB) in an active state. If a subsequent read operation is initiated, the driver may attempt to resubmit this already active URB. This improper handling of URBs can lead to system instability or a denial of service.

Weaknesses

CWE-366

Coverage 7

Advisories and references