CyberRota Analysis
AI-GeneratedThe vulnerability affects the Linux kernel's handling of USB receive buffers in the etas_es58x driver, specifically during the resubmission of URBs (USB Request Blocks) after a failure. If the resubmission fails, the allocated coherent transfer buffer is not properly released, leading to a potential memory leak. Organizations utilizing Linux systems with this driver should prioritize remediation to prevent resource exhaustion and ensure system stability.
Original NVD Description
In the Linux kernel, the following vulnerability has been resolved: can: etas_es58x: es58x_read_bulk_callback(): fix RX buffer leak on URB resubmit failure es58x_read_bulk_callback() resubmits the RX URB after processing a received packet. If the resubmit succeeds, the URB remains anchored and will be handled by the normal RX path or by teardown. However, if usb_submit_urb() fails, the callback unanchors the URB and then returns directly. This skips the existing free_urb path, so the coherent transfer buffer allocated with usb_alloc_coherent() is not released. Reuse the existing free_urb path after a resubmit failure so that the RX coherent buffer is freed before leaving the callback.