From eb7aa112c36fc8cb5a404cd37fef6c8d5252313a Mon Sep 17 00:00:00 2001
From: aouinizied <aouinizied@gmail.com>
Date: Fri, 10 Jul 2020 14:32:15 +0200
Subject: [PATCH] Add missing length check.

---
 nfstream/observer_cc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/nfstream/observer_cc.c b/nfstream/observer_cc.c
index 003f44d..fef0139 100644
--- a/nfstream/observer_cc.c
+++ b/nfstream/observer_cc.c
@@ -905,7 +905,7 @@ int process_packet(pcap_t * pcap_handle, const struct pcap_pkthdr *header, const
     mpls.u32 = ntohl(mpls.u32);
     type = ETH_P_IP, ip_offset += 4;
 
-    while(!mpls.mpls.s) {
+    while(!mpls.mpls.s && (((bpf_u_int32)ip_offset) + 4 < header->caplen)) {
       mpls.u32 = *((uint32_t *) &packet[ip_offset]);
       mpls.u32 = ntohl(mpls.u32);
       ip_offset += 4;