From bd036f96f9bf3feb7ef4699b4f9882705b853ed1 Mon Sep 17 00:00:00 2001
From: Ivan Nardi <12729895+IvanNardi@users.noreply.github.com>
Date: Tue, 18 Jan 2022 19:11:01 +0100
Subject: Netbios, CSGO: fix two memory errors (#1413)

Detected by oss-fuzz:
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=43754
https://oss-fuzz.com/testcase-detail/5329842395021312
---
 src/lib/protocols/csgo.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

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

diff --git a/src/lib/protocols/csgo.c b/src/lib/protocols/csgo.c
index f48636ef4..4bd541bcd 100644
--- a/src/lib/protocols/csgo.c
+++ b/src/lib/protocols/csgo.c
@@ -77,7 +77,8 @@ void ndpi_search_csgo(struct ndpi_detection_module_struct* ndpi_struct, struct n
       }
     }
 
-    if(flow->l4.udp.csgo_s2 < 3 && (w & 0xffff0000ul) == 0x0d1d0000) {
+    if(packet->payload_packet_len > 6 &&
+       flow->l4.udp.csgo_s2 < 3 && (w & 0xffff0000ul) == 0x0d1d0000) {
       uint32_t w2 = get_u_int32_t(packet->payload, 2);
       if(packet->payload_packet_len == 13) {
         if(!flow->l4.udp.csgo_s2) {
-- 
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