CVE-2026-23031

In the Linux kernel, the following vulnerability has been resolved:

can: gsusb: gsusbreceivebulk_callback(): fix URB memory leak

In gscanopen(), the URBs for USB-in transfers are allocated, added to the parent->rxsubmitted anchor and submitted. In the complete callback gsusbreceivebulkcallback(), the URB is processed and resubmitted. In gscanclose() the URBs are freed by calling usbkillanchoredurbs(parent->rx_submitted).

However, this does not take into account that the USB framework unanchors the URB before the complete function is called. This means that once an in-URB has been completed, it is no longer anchored and is ultimately not released in gscanclose().

Fix the memory leak by anchoring the URB in the gsusbreceivebulkcallback() to the parent->rx_submitted anchor.