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 1a41f97..664ea2b 100644 (file)
--- 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;