diff mbox series

[V4,06/10] tx_pkt: switch to use qemu_receive_packet_iov() for loopback

Message ID 20210305062638.6749-7-jasowang@redhat.com
State New
Headers show
Series Detect reentrant RX casued by loopback | expand

Commit Message

Jason Wang March 5, 2021, 6:26 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>
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(-)
diff mbox series

Patch

diff --git a/hw/net/net_tx_pkt.c b/hw/net/net_tx_pkt.c
index da262edc3e..1f9aa59eca 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);
     }