CVE-2026-43422 usb: legacy: ncm: Fix NPE in gncm_bind

In the Linux kernel, the following vulnerability has been resolved: usb: legacy: ncm: Fix NPE in gncmbind Commit 56a512a9b410 "usb: gadget: fncm: align netdevice lifecycle with bind/unbind" deferred the allocation of the netdevice. This change leads to a NULL pointer dereference in the legacy NCM...