PHP :: Bug #79951 :: Memory leak in str

Bug #79951	Memory leak in str_replace of empty string
Submitted:	2020-08-10 22:31 UTC	Modified:	2020-08-11 08:28 UTC
From:	changochen1 at gmail dot com	Assigned:	nikic (profile)
Status:	Closed	Package:	Scripting Engine problem
PHP Version:	8.0Git-2020-08-10 (Git)	OS:
Private report:	No	CVE-ID:	None

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[2020-08-10 22:31 UTC] changochen1 at gmail dot com

Description:
------------
We found a memory leak in PHP. Please refer to the POC.

Test script:
---------------
<?
$a = array (   4 ,   1 , $a , 1 , 1.500000 , 7 , false , 'x' , 'x' , 500    ) ;
foreach ( $a as $b )   str_replace ( $GLOBALS , $a , $a )  ;

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[2020-08-11 07:15 UTC] sjon@php.net

this seems to have been fixed in 8.0alpha3 already, see https://3v4l.org/2vhhJ#v800alpha1

[2020-08-11 08:26 UTC] nikic@php.net

-Assigned To: +Assigned To: nikic

[2020-08-11 08:26 UTC] nikic@php.net

Reduced:

<?php
str_replace([""], [1000], "foo");

[2020-08-11 08:28 UTC] nikic@php.net

-Summary: Memory leak in zend_string +Summary: Memory leak in str_replace of empty string

[2020-08-11 08:37 UTC] nikic@php.net

Automatic comment on behalf of nikita.ppv@gmail.com
Revision: http://git.php.net/?p=php-src.git;a=commit;h=9d9dffe60aee0fb469ee0d414eca2a5033a7eafc
Log: Fixed bug #79951

[2020-08-11 08:37 UTC] nikic@php.net

-Status: Assigned +Status: Closed

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