From 34b316d7d5ff4ec6abf8ae61e27fd82d08fd21cf Mon Sep 17 00:00:00 2001
From: Bastien Nocera <hadess@hadess.net>
Date: Thu, 13 Dec 2018 15:29:20 +0100
Subject: [PATCH] mindtct: Check for multiplication overflow in
 allocate_contour()

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

Closes: #97
---
 libfprint/nbis/mindtct/contour.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libfprint/nbis/mindtct/contour.c b/libfprint/nbis/mindtct/contour.c
index 3361047..5d802c2 100644
--- a/libfprint/nbis/mindtct/contour.c
+++ b/libfprint/nbis/mindtct/contour.c
@@ -107,6 +107,8 @@ int allocate_contour(int **ocontour_x, int **ocontour_y,
 {
    int *contour_x, *contour_y, *contour_ex, *contour_ey;
 
+   ASSERT_SIZE_MUL(ncontour, sizeof(int));
+
    /* Allocate contour's x-coord list. */
    contour_x = (int *)malloc(ncontour*sizeof(int));
    /* If allocation error... */