CVE-2026-23080

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> can: mcba_usb: mcba_usb_read_bulk_callback(): fix URB memory leak<br /> <br /> Fix similar memory leak as in commit 7352e1d5932a ("can: gs_usb:<br /> gs_usb_receive_bulk_callback(): fix URB memory leak").<br /> <br /> In mcba_usb_probe() -&gt; mcba_usb_start(), the URBs for USB-in transfers are<br /> allocated, added to the priv-&gt;rx_submitted anchor and submitted. In the<br /> complete callback mcba_usb_read_bulk_callback(), the URBs are processed and<br /> resubmitted. In mcba_usb_close() -&gt; mcba_urb_unlink() the URBs are freed by<br /> calling usb_kill_anchored_urbs(&amp;priv-&gt;rx_submitted).<br /> <br /> However, this does not take into account that the USB framework unanchors<br /> the URB before the complete function is called. This means that once an<br /> in-URB has been completed, it is no longer anchored and is ultimately not<br /> released in usb_kill_anchored_urbs().<br /> <br /> Fix the memory leak by anchoring the URB in the<br /> mcba_usb_read_bulk_callback()to the priv-&gt;rx_submitted anchor.