ヤミRoot VoidGate

Viewing: gd_security.c

/*
   * gd_security.c
   *
   * Implements buffer overflow check routines.
   *
   * Written 2004, Phil Knirsch.
   * Based on netpbm fixes by Alan Cox.
   *
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <stdio.h>
#include <stdlib.h>
#include <limits.h>
#include "gd.h"

int overflow2(int a, int b)
{
	if(a <= 0 || b <= 0) {
		php_gd_error("gd warning: one parameter to a memory allocation multiplication is negative or zero, failing operation gracefully\n");
		return 1;
	}
	if(a > INT_MAX / b) {
		php_gd_error("gd warning: product of memory allocation multiplication would exceed INT_MAX, failing operation gracefully\n");
		return 1;
	}
	return 0;
}

User / IP	: 216.73.216.91
Host / Server	: 146.88.233.70 / www.dev.loger.cm
System	: Linux hybrid1120.fr.ns.planethoster.net 3.10.0-957.21.2.el7.x86_64 #1 SMP Wed Jun 5 14:26:44 UTC 2019 x86_64