ref: 522588f699b3c910c5a47f8b8185e69250665313
parent: d422dd6009f3e48e13d5f7f162813537902e125c
author: Ben Harris <[email protected]>
date: Tue Jan 10 18:37:21 EST 2023
Last-ditch grid-size limit for Fifteen At least prevent integer overflow when constructing the grid.
--- a/fifteen.c
+++ b/fifteen.c
@@ -7,6 +7,7 @@
#include <string.h>
#include <assert.h>
#include <ctype.h>
+#include <limits.h>
#include <math.h>
#include "puzzles.h"
@@ -138,6 +139,8 @@
{
if (params->w < 2 || params->h < 2)
return "Width and height must both be at least two";
+ if (params->w > INT_MAX / params->h)
+ return "Width times height must not be unreasonably large";
return NULL;
}