From bad45984fa96406ed077f976842bee22e334eac5 Mon Sep 17 00:00:00 2001
From: iddq <iddq>
Date: Sat, 10 Feb 2024 12:32:20 +0100
Subject: [PATCH] checks offset value before use

---
 src/dump.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/dump.c b/src/dump.c
index 8e874cd..112f4a6 100644
--- a/src/dump.c
+++ b/src/dump.c
@@ -69,7 +69,8 @@ static void dump_file(char *file){
     printf("File: %s\n", file);
     if (magic == 0x5a4d){ /* MZ */
         offset = read_dword(0x3c);
-        magic = read_word(offset);
+        if (0 < offset && offset < st.st_size-2)
+            magic = read_word(offset);
 
         if (magic == 0x4550)
             dumppe(offset);