From 576f87afc2ac196c11fc14714f480c23cd8eb0e1 Mon Sep 17 00:00:00 2001
From: Philippe Antoine <pantoine@oisf.net>
Date: Wed, 17 Jul 2024 11:14:31 +0200
Subject: [PATCH] suricata/bpf: fix -Wshorten-64-to-32 warnings

Ticket: #6186
---
 src/suricata.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/suricata.c b/src/suricata.c
index 13b48fe91770..88bfb6323a95 100644
--- a/src/suricata.c
+++ b/src/suricata.c
@@ -520,7 +520,11 @@ static void SetBpfStringFromFile(char *filename)
         SCLogError("Failed to stat file %s", filename);
         exit(EXIT_FAILURE);
     }
-    bpf_len = st.st_size + 1;
+    if ((uint64_t)st.st_size > UINT32_MAX - 1) {
+        SCLogError("Too big file %s", filename);
+        exit(EXIT_FAILURE);
+    }
+    bpf_len = (uint32_t)(st.st_size + 1);
 
     bpf_filter = SCCalloc(1, bpf_len);
     if (unlikely(bpf_filter == NULL)) {