CDC-NCM: handle incomplete transfer of MTU
A malicious device may give half an answer when asked for its MTU. The driver will proceed after this with a garbage MTU. Anything but a complete answer must be treated as an error. V2: used sizeof as request by Alexander Reported-and-tested-by:<syzbot+0631d878823ce2411636@syzkaller.appspotmail.com> Signed-off-by:
Oliver Neukum <oneukum@suse.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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