DEBIAN-CVE-2026-64056

In the Linux kernel, the following vulnerability has been resolved:  net: ethernet: cortina: Make RX SKB per-port  The SKB used to assemble packets from fragments in gmacrx() is static local, but the Gemini has two ethernet ports, meaning there can be races between the ports on a bad day if a device is using both.  Make the RX SKB a per-port variable and carry it over between invocations in the port struct instead.  Zero the pointer once we call napigrofrags(), on error (after calling napifree_frags()) or if the port is stopped.  Zero it in some place where not strictly necessary just to emphasize what is going on.  This was found by Sashiko during normal patch review.