From 6504d21c450a5c38d48c6e890e500cffa27fb827 Mon Sep 17 00:00:00 2001
From: Ted Unangst <tedu@cvs.openbsd.org>
Date: Sun, 26 Oct 2003 22:31:24 +0000
Subject: per deraadt@ request, don't permit insanely large stackgap values.

---
 sys/kern/kern_sysctl.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'sys/kern/kern_sysctl.c')

diff --git a/sys/kern/kern_sysctl.c b/sys/kern/kern_sysctl.c
index 0dee4aaf506..0af58239e6f 100644
--- a/sys/kern/kern_sysctl.c
+++ b/sys/kern/kern_sysctl.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: kern_sysctl.c,v 1.90 2003/10/24 19:05:21 tedu Exp $	*/
+/*	$OpenBSD: kern_sysctl.c,v 1.91 2003/10/26 22:31:23 tedu Exp $	*/
 /*	$NetBSD: kern_sysctl.c,v 1.17 1996/05/20 17:49:05 mrg Exp $	*/
 
 /*-
@@ -447,7 +447,7 @@ kern_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p)
 		 * Safety harness.
 		 */
 		if ((stackgap < ALIGNBYTES && stackgap != 0) ||
-		    !powerof2(stackgap))
+		    !powerof2(stackgap) || stackgap >= 256 * 1024 * 1024)
 			return (EINVAL);
 		stackgap_random = stackgap;
 		return (0);
-- 
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