spice: monitors_config: check pointer before dereferencing

Reported-by: Fabio Fantoni <fabio.fantoni@m2r.biz> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2014-04-07 12:15:44 +02:00 · 2014-04-07 12:15:44 +02:00 · dc491cfc14
commit dc491cfc14
parent 466e6e9d13
1 changed files with 4 additions and 0 deletions
--- a/ui/spice-display.c
+++ b/ui/spice-display.c
@ -549,6 +549,10 @@ static int interface_client_monitors_config(QXLInstance *sin,
    QemuUIInfo info;
    int rc;

+    if (!mc) {
+        return 1;
+    }
+
    /*
     * FIXME: multihead is tricky due to the way
     * spice has multihead implemented.