diff --git a/pcnet-switch-to-use-qemu_receive_packet-for-loopback.patch b/pcnet-switch-to-use-qemu_receive_packet-for-loopback.patch
new file mode 100644
index 0000000..4ae5120
--- /dev/null
+++ b/pcnet-switch-to-use-qemu_receive_packet-for-loopback.patch
@@ -0,0 +1,43 @@
+From 90e95b8873d1aa42ffc15f8d0e054d2b52453c5e Mon Sep 17 00:00:00 2001
+From: Alexander Bulekov <alxndr@bu.edu>
+Date: Fri, 14 May 2021 10:37:29 +0800
+Subject: [PATCH] pcnet: switch to use qemu_receive_packet() for loopback
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Fix CVE-2021-3416
+
+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
+Buglink: https://bugs.launchpad.net/qemu/+bug/1917085
+Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com
+Signed-off-by: Alexander Bulekov <alxndr@bu.edu>
+Signed-off-by: Jason Wang <jasowang@redhat.com>
+
+Signed-off-by: Jiajie Li <lijiajie11@huawei.com>
+---
+ hw/net/pcnet.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/hw/net/pcnet.c b/hw/net/pcnet.c
+index 16683091c9..9e8d267536 100644
+--- a/hw/net/pcnet.c
++++ b/hw/net/pcnet.c
+@@ -1249,7 +1249,7 @@ txagain:
+             if (BCR_SWSTYLE(s) == 1)
+                 add_crc = !GET_FIELD(tmd.status, TMDS, NOFCS);
+             s->looptest = add_crc ? PCNET_LOOPTEST_CRC : PCNET_LOOPTEST_NOCRC;
+-            pcnet_receive(qemu_get_queue(s->nic), s->buffer, s->xmit_pos);
++            qemu_receive_packet(qemu_get_queue(s->nic), s->buffer, s->xmit_pos);
+             s->looptest = 0;
+         } else {
+             if (s->nic) {
+-- 
+2.27.0
+