From: tb <tb@openbsd.org>
Date: Mon, 4 Dec 2017 14:56:07 +0000 (+0000)
Subject: Avoid a NULL-deref in get_recorded_lease() leading to a segfault seen
X-Git-Url: http://artulab.com/gitweb/?a=commitdiff_plain;h=30848b8dd73cef8a7ffdd7e7d3a16980c9a99964;p=openbsd

Avoid a NULL-deref in get_recorded_lease() leading to a segfault seen
by aja and others.

ok krw
---

diff --git a/sbin/dhclient/dhclient.c b/sbin/dhclient/dhclient.c
index 1a41f97ac9f..664ea2bab73 100644
--- a/sbin/dhclient/dhclient.c
+++ b/sbin/dhclient/dhclient.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: dhclient.c,v 1.532 2017/12/03 20:53:28 krw Exp $	*/
+/*	$OpenBSD: dhclient.c,v 1.533 2017/12/04 14:56:07 tb Exp $	*/
 
 /*
  * Copyright 2004 Henning Brauer <henning@openbsd.org>
@@ -2541,7 +2541,7 @@ get_recorded_lease(struct interface_info *ifi)
 		break;
 	}
 
-	if (lp->epoch == 0)
+	if (lp && lp->epoch == 0)
 		time(&lp->epoch);
 
 	return lp;