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-rw-r--r--sys/dev/wscons/wsdisplay.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/sys/dev/wscons/wsdisplay.c b/sys/dev/wscons/wsdisplay.c
index 22050d83220..8c412d5c8b7 100644
--- a/sys/dev/wscons/wsdisplay.c
+++ b/sys/dev/wscons/wsdisplay.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: wsdisplay.c,v 1.64 2005/09/27 21:45:20 miod Exp $ */
+/* $OpenBSD: wsdisplay.c,v 1.65 2005/11/05 16:04:20 uwe Exp $ */
/* $NetBSD: wsdisplay.c,v 1.82 2005/02/27 00:27:52 perry Exp $ */
/*
@@ -920,6 +920,9 @@ wsdisplayioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p)
if (ISWSDISPLAYCTL(dev))
return (wsdisplay_cfg_ioctl(sc, cmd, data, flag, p));
+ if (WSDISPLAYSCREEN(dev) >= WSDISPLAY_MAXSCREEN)
+ return (ENODEV);
+
if ((scr = sc->sc_scr[WSDISPLAYSCREEN(dev)]) == NULL)
return (ENXIO);