From 33466ee6a89ec37c62c0febea55caa5e3384c612 Mon Sep 17 00:00:00 2001
From: goldsimon <goldsimon@gmx.de>
Date: Thu, 30 Mar 2017 22:30:27 +0200
Subject: [PATCH] dhcp_parse_reply: return ERR_VAL instead of asserting on
 offset-out-of-pbuf

---
 src/core/ipv4/dhcp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/core/ipv4/dhcp.c b/src/core/ipv4/dhcp.c
index 1f16fd80..39df9a92 100644
--- a/src/core/ipv4/dhcp.c
+++ b/src/core/ipv4/dhcp.c
@@ -1616,7 +1616,7 @@ decode_next:
       offset_max -= q->len;
       if ((offset < offset_max) && offset_max) {
         q = q->next;
-        LWIP_ASSERT("next pbuf was null", q);
+        LWIP_ERROR("next pbuf was null", q != NULL, return ERR_VAL;);
         options = (u8_t*)q->payload;
       } else {
         /* We've run out of bytes, probably no end marker. Don't proceed. */