CVE-2025-68312

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> usbnet: Prevents free active kevent<br /> <br /> The root cause of this issue are:<br /> 1. When probing the usbnet device, executing usbnet_link_change(dev, 0, 0);<br /> put the kevent work in global workqueue. However, the kevent has not yet<br /> been scheduled when the usbnet device is unregistered. Therefore, executing<br /> free_netdev() results in the "free active object (kevent)" error reported<br /> here.<br /> <br /> 2. Another factor is that when calling usbnet_disconnect()-&gt;unregister_netdev(),<br /> if the usbnet device is up, ndo_stop() is executed to cancel the kevent.<br /> However, because the device is not up, ndo_stop() is not executed.<br /> <br /> The solution to this problem is to cancel the kevent before executing<br /> free_netdev().