From 05734f3d314a31facbce61799b98206ccc5963a5 Mon Sep 17 00:00:00 2001
From: Ivan Nardi <12729895+IvanNardi@users.noreply.github.com>
Date: Sun, 16 Jan 2022 19:28:39 +0100
Subject: Zattoo: fix Null-dereference READ with ipv6 traffic (#1410)

Fix: 20b5f6d7
Detected by oss-fux:
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=43700
---
 src/lib/protocols/zattoo.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src/lib/protocols/zattoo.c')

diff --git a/src/lib/protocols/zattoo.c b/src/lib/protocols/zattoo.c
index d32c36866..74d3d7bbe 100644
--- a/src/lib/protocols/zattoo.c
+++ b/src/lib/protocols/zattoo.c
@@ -100,7 +100,7 @@ void ndpi_search_zattoo(struct ndpi_detection_module_struct *ndpi_struct, struct
       ndpi_parse_packet_line_info(ndpi_struct, flow);
 
       // test for unique character of the zattoo header
-      if(packet->parsed_lines == 4 && packet->host_line.ptr != NULL) {
+      if(packet->parsed_lines == 4 && packet->host_line.ptr != NULL && packet->iph) {
 	u_int32_t ip;
 	u_int16_t bytes_read = 0;
 
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