From 5459823667cc9de14e29959ee95226006a4e0039 Mon Sep 17 00:00:00 2001
From: Bastien Nocera <hadess@hadess.net>
Date: Thu, 13 Dec 2018 15:25:37 +0100
Subject: [PATCH] mindtct: Check for multiplication overflow in
 interpolate_direction_map()

Assert if any of the multiplications, which are then used to allocate
memory, would overflow.

Closes: #100
---
 libfprint/nbis/mindtct/maps.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libfprint/nbis/mindtct/maps.c b/libfprint/nbis/mindtct/maps.c
index 494a4de3..d3a0b44d 100644
--- a/libfprint/nbis/mindtct/maps.c
+++ b/libfprint/nbis/mindtct/maps.c
@@ -502,6 +502,8 @@ int interpolate_direction_map(int *direction_map, int *low_contrast_map,
    print2log("INTERPOLATE DIRECTION MAP\n");
 
    /* Allocate output (interpolated) Direction Map. */
+   ASSERT_SIZE_MUL(mw, mh);
+   ASSERT_SIZE_MUL(mw * mh, sizeof(int));
    omap = (int *)malloc(mw*mh*sizeof(int));
    if(omap == (int *)NULL){
       fprintf(stderr,