From fbe0c5591077814eead05217fc96f087b254a6a8 Mon Sep 17 00:00:00 2001
From: "Michael S. Tsirkin" <mst@redhat.com>
Date: Tue, 22 Mar 2011 18:32:50 +0200
Subject: [PATCH] virtio-serial: don't crash on invalid input
Fix crash on invalid input in virtio-serial.
Discovered by code review, untested.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
---
hw/virtio-serial-bus.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/hw/virtio-serial-bus.c b/hw/virtio-serial-bus.c
index a82fbe9ba4..62273799b6 100644
--- a/hw/virtio-serial-bus.c
+++ b/hw/virtio-serial-bus.c
@@ -594,6 +594,9 @@ static int virtio_serial_load(QEMUFile *f, void *opaque, int version_id)
id = qemu_get_be32(f);
port = find_port_by_id(s, id);
+ if (!port) {
+ return -EINVAL;
+ }
port->guest_connected = qemu_get_byte(f);
host_connected = qemu_get_byte(f);
--
2.30.2