From: George Schlossnagle <gschlossnagle@php.net>
Date: Thu, 1 Sep 2005 14:44:11 +0000 (+0000)
Subject: MFH. Protect against underflow - refs http://pecl.php.net/bugs/bug.php?id=5193
X-Git-Tag: php-5.1.0RC2_PRE~30
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=248c30dad75d8ab3700eade2f9e18ff408faba26;p=php

MFH. Protect against underflow - refs http://pecl.php.net/bugs/bug.php?id=5193
---

diff --git a/ext/pdo/pdo_stmt.c b/ext/pdo/pdo_stmt.c
index b988598e66..1dd5c79a0f 100755
--- a/ext/pdo/pdo_stmt.c
+++ b/ext/pdo/pdo_stmt.c
@@ -1541,7 +1541,10 @@ static PHP_METHOD(PDOStatement, getColumnMeta)
 	if (FAILURE == zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "l", &colno)) {
 		RETURN_FALSE;
 	}
-
+	if(colno < 0) {
+		pdo_raise_impl_error(stmt->dbh, stmt, "42P10", "column number must be non-negative" TSRMLS_CC);
+		RETURN_FALSE;
+	}
 	if (!stmt->methods->get_column_meta) {
 		pdo_raise_impl_error(stmt->dbh, stmt, "IM001", "driver doesn't support meta data" TSRMLS_CC);
 		RETURN_FALSE;