From: Ilia Alshanetsky <iliaa@php.net>
Date: Mon, 23 Aug 2004 17:27:53 +0000 (+0000)
Subject: MFH: Fixed possible crash inside dio_read().
X-Git-Tag: php-4.3.9RC2~17
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=3bdf8fda7f958efa949e01f793d50b13577f1339;p=php

MFH: Fixed possible crash inside dio_read().
---

diff --git a/ext/dio/dio.c b/ext/dio/dio.c
index 38f858706a..90e07b6a77 100644
--- a/ext/dio/dio.c
+++ b/ext/dio/dio.c
@@ -199,6 +199,11 @@ PHP_FUNCTION(dio_read)
 	}
 	ZEND_FETCH_RESOURCE(f, php_fd_t *, &r_fd, -1, le_fd_name, le_fd);
 
+	if (bytes <= 0) {
+		php_error_docref(NULL TSRMLS_CC, E_WARNING, "Length parameter must be greater than 0.");
+		RETURN_FALSE;
+	}
+
 	data = emalloc(bytes + 1);
 	res = read(f->fd, data, bytes);
 	if (res <= 0) {