CVE-2026-74459

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> can: etas_es58x: es58x_read_bulk_callback(): fix RX buffer leak on URB resubmit failure<br /> <br /> es58x_read_bulk_callback() resubmits the RX URB after processing a received<br /> packet. If the resubmit succeeds, the URB remains anchored and will be<br /> handled by the normal RX path or by teardown.<br /> <br /> However, if usb_submit_urb() fails, the callback unanchors the URB and then<br /> returns directly. This skips the existing free_urb path, so the coherent<br /> transfer buffer allocated with usb_alloc_coherent() is not released.<br /> <br /> Reuse the existing free_urb path after a resubmit failure so that the RX<br /> coherent buffer is freed before leaving the callback.