diff mbox series

[PULL,V2,10/20] tx_pkt: switch to use qemu_receive_packet_iov() for loopback

Message ID 1615799673-31549-11-git-send-email-jasowang@redhat.com
State New
Headers show
Series [PULL,V2,01/20] virtio-net: calculating proper msix vectors on init | expand

Commit Message

Jason Wang March 15, 2021, 9:14 a.m. UTC
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>
 hw/net/net_tx_pkt.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/hw/net/net_tx_pkt.c b/hw/net/net_tx_pkt.c
index da262ed..1f9aa59 100644
--- a/hw/net/net_tx_pkt.c
+++ b/hw/net/net_tx_pkt.c
@@ -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);