From e2cafb929acb74377754cb688419575b139b922a Mon Sep 17 00:00:00 2001 From: Jon Maloy Date: Tue, 29 Jun 2021 03:42:47 -0400 Subject: [PATCH 9/9] lan9118: switch to use qemu_receive_packet() for loopback MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit RH-Author: Jon Maloy Message-id: <20210629034247.3286477-10-jmaloy@redhat.com> Patchwork-id: 101790 O-Subject: [RHEL-8.4.0.z qemu-kvm PATCH v2 9/9] lan9118: switch to use qemu_receive_packet() for loopback Bugzilla: 1932917 RH-Acked-by: Stefano Garzarella RH-Acked-by: Stefan Hajnoczi RH-Acked-by: Thomas Huth From: Alexander Bulekov 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 Cc: qemu-stable@nongnu.org Reviewed-by: Philippe Mathieu-Daudé Signed-off-by: Jason Wang (cherry picked from commit 37cee01784ff0df13e5209517e1b3594a5e792d1) Signed-off-by: Jon Maloy Signed-off-by: Danilo C. L. de Paula --- hw/net/lan9118.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/hw/net/lan9118.c b/hw/net/lan9118.c index ed551f2178..7bb4633f0f 100644 --- a/hw/net/lan9118.c +++ b/hw/net/lan9118.c @@ -667,7 +667,7 @@ static void do_tx_packet(lan9118_state *s) /* FIXME: Honor TX disable, and allow queueing of packets. */ if (s->phy_control & 0x4000) { /* This assumes the receive routine doesn't touch the VLANClient. */ - lan9118_receive(qemu_get_queue(s->nic), s->txp->data, s->txp->len); + qemu_receive_packet(qemu_get_queue(s->nic), s->txp->data, s->txp->len); } else { qemu_send_packet(qemu_get_queue(s->nic), s->txp->data, s->txp->len); } -- 2.27.0