From 57b278f88622a90f99cf3ef36bc475460d2895f1 Mon Sep 17 00:00:00 2001
From: Ed Maste <emaste@FreeBSD.org>
Date: Mon, 31 Aug 2020 15:55:29 +0000
Subject: [PATCH] dhclient: improve error handling parsing option 119

Reported by:	Shlomi Oberman, JSOF
Submitted by:	delphij
Reviewed by:	markj
Tested by:	markj
---
 sbin/dhclient/options.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sbin/dhclient/options.c b/sbin/dhclient/options.c
index dc4cceab841..afdb3985aa5 100644
--- a/sbin/dhclient/options.c
+++ b/sbin/dhclient/options.c
@@ -298,6 +298,8 @@ find_search_domain_name_len(struct option_data *option, size_t *offset)
 
 			pointed_len = find_search_domain_name_len(option,
 			    &pointer);
+			if (pointed_len < 0)
+				return (-1);
 			domain_name_len += pointed_len;
 
 			*offset = i + 2;