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tx_pkt: switch to use qemu_receive_packet_iov() for loopback

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This patch switches to use qemu_receive_receive_iov() 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>
This commit is contained in:
Jason Wang
2021-03-15 16:41:22 +08:00
parent 8c92060d3c
commit 8c552542b8
1 changed files with 1 additions and 1 deletions
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hw/net/net_tx_pkt.c
+1 -1
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@@ -553,7 +553,7 @@ static inline void net_tx_pkt_sendv(struct NetTxPkt *pkt,
NetClientState *nc, const struct iovec *iov, int iov_cnt)
{
if (pkt->is_loopback) {
nc->info->receive_iov(nc, iov, iov_cnt);
qemu_receive_packet_iov(nc, iov, iov_cnt);
} else {
qemu_sendv_packet(nc, iov, iov_cnt);
}