From c75b75acb002128425f427373f4b82a83d228823 Mon Sep 17 00:00:00 2001
From: Uwe Stuehler <uwe@cvs.openbsd.org>
Date: Sat, 5 Nov 2005 16:04:21 +0000
Subject: Check the screen number before using it as an index. "correct" miod@

---
 sys/dev/wscons/wsdisplay.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'sys/dev')

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);
 
-- 
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