From 7700eb86e7740ce5ea0180c6c39e11e816f265c4 Mon Sep 17 00:00:00 2001
From: Ruslan Ermilov <ru@FreeBSD.org>
Date: Fri, 12 Mar 2004 21:06:20 +0000
Subject: [PATCH] Do what the execve(2) manpage says and enforce what a
 Strictly Conforming POSIX application should do by disallowing the argv
 argument to be NULL.

PR:		kern/33738
Submitted by:	Marc Olzheim, Serge van den Boom
OK'ed by:	nectar
---
 sys/kern/kern_exec.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/sys/kern/kern_exec.c b/sys/kern/kern_exec.c
index d4508c68f01..d2f60d73684 100644
--- a/sys/kern/kern_exec.c
+++ b/sys/kern/kern_exec.c
@@ -944,7 +944,8 @@ exec_extract_strings(imgp)
 				imgp->argc++;
 			} while ((argp = (caddr_t)(intptr_t)fuword(argv++)));
 		}
-	}	
+	} else
+		return (EFAULT);
 
 	imgp->endargs = imgp->stringp;