usb: sanity check setup_index+setup_len in post_load

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

diff --git a/hw/usb/bus.c b/hw/usb/bus.c
index 82ca6a13e8ee788c3ddde0a82adcc183796cfc6f..72d5b9222529e284daa971eb02ad5906f6272e6a 100644 (file)
--- a/hw/usb/bus.c
+++ b/hw/usb/bus.c
@@ -47,6 +47,10 @@ static int usb_device_post_load(void *opaque, int version_id)
     } else {
         dev->attached = 1;
     }
+    if (dev->setup_index >= sizeof(dev->data_buf) ||
+        dev->setup_len >= sizeof(dev->data_buf)) {
+        return -EINVAL;
+    }
     return 0;
 }