In the Linux kernel, the following vulnerability has been resolved:
usbnet: Prevents free active kevent
The root cause of this issue are:
1. When probing the usbnet device, executing usbnet_link_change(dev, 0, 0);
put the kevent work in global workqueue. However, the kevent has not yet
been scheduled when the usbnet device is unregistered. Therefore, executing
free_netdev() results in the "free active object (kevent)" error reported
here.
2. Another factor is that when calling usbnet_disconnect()->unregister_netdev(),
if the usbnet device is up, ndo_stop() is executed to cancel the kevent.
However, because the device is not up, ndo_stop() is not executed.
The solution to this problem is to cancel the kevent before executing
free_netdev().
CVSS
No CVSS.
References
Configurations
No configuration.
History
No history.
Information
Published : 2025-12-16 16:16
Updated : 2026-06-17 09:58
NVD link : CVE-2025-68312
Mitre link : CVE-2025-68312
CVE.ORG link : CVE-2025-68312
JSON object : View
Products Affected
No product.
CWE
No CWE.