CyberRota Analysis
AI-GeneratedThe vulnerability affects the Linux kernel's USB driver, specifically the mtu3 gadget, where a failure in the queueing process can lead to a failure to unmap DMA requests. This oversight can result in memory leaks or potential denial-of-service conditions due to unhandled DMA mappings. Organizations using Linux systems with the affected USB functionality should prioritize patching to mitigate these risks.
Original NVD Description
In the Linux kernel, the following vulnerability has been resolved: usb: mtu3: unmap request DMA on queue failure mtu3_gadget_queue() maps the request before checking whether the QMU GPD ring can accept another transfer. the request is returned with -EAGAIN before it is linked on the endpoint request list if mtu3_prepare_transfer() fails. Normal completion and dequeue paths unmap requests from mtu3_req_complete(), but this error path never reaches that helper, so the DMA mapping is left active. Unmap the request before returning from the failed queue path.