diff -urN autotrace-0.31.1.old/input-bmp.c autotrace-0.31.1/input-bmp.c
--- autotrace-0.31.1.old/input-bmp.c	2021-04-30 15:03:16.264446518 +0530
+++ autotrace-0.31.1/input-bmp.c	2021-04-30 15:06:14.682051209 +0530
@@ -220,6 +220,13 @@
    * word length (32 bits == 4 bytes)
    */
 
+  unsigned long overflowTest = Bitmap_Head.biWidth * Bitmap_Head.biBitCnt;
+  if (overflowTest / Bitmap_Head.biWidth != Bitmap_Head.biBitCnt) {
+    LOG("Error reading BMP file header. Width is too large\n");
+    at_exception_fatal(&exp, "Error reading BMP file header. Width is too large");
+    goto cleanup;
+  }
+
   rowbytes= ( (Bitmap_Head.biWidth * Bitmap_Head.biBitCnt - 1) / 32) * 4 + 4;  
 
 #ifdef DEBUG