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H A Dmsf2-emac.c26194a58f4eb83c5bdf4061a1628508084450ba1 Wed Feb 24 05:00:01 UTC 2021 Jason Wang <jasowang@redhat.com> msf2-mac: switch to use qemu_receive_packet() for loopback

This patch switches to use qemu_receive_packet() which can detect
reentrancy and return early.

This is intended to address CVE-2021-3416.

Cc: Prasad J Pandit <ppandit@redhat.com>
Cc: qemu-stable@nongnu.org
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>