1194741 – php: double free in apprentice_map() when Zend Memory Management disabled

Bug 1194741 - php: double free in apprentice_map() when Zend Memory Management disabled

Summary: php: double free in apprentice_map() when Zend Memory Management disabled

Keywords:
Status:	CLOSED NOTABUG
Alias:	None
Product:	Security Response
Classification:	Other
Component:	vulnerability
Sub Component:
Version:	unspecified
Hardware:	All
OS:	Linux
Priority:	medium
Severity:	medium
Target Milestone:	---
Assignee:	Red Hat Product Security
QA Contact:
Docs Contact:
URL:
Whiteboard:
Depends On:
Blocks:	1194715
TreeView+	depends on / blocked

Reported:	2015-02-20 16:30 UTC by Vasyl Kaigorodov
Modified:	2021-02-17 05:37 UTC (History)
CC List:	19 users (show)
Fixed In Version:	php 5.5.22, php 5.6.6
Clone Of:
Environment:
Last Closed:	2015-03-30 09:34:20 UTC
Embargoed:

Attachments	(Terms of Use)

Description Vasyl Kaigorodov 2015-02-20 16:30:04 UTC

It was reported [1] that when PHP is running with Zend Memory Management disabled, "fileinfo" extension might free() a region of memory twice.
Upstream commit that fixes this:
http://git.php.net/?p=php-src.git;a=commit;h=91aa340180eccfc15d4a143b54d47b8120f898be

[1]: https://bugs.php.net/bug.php?id=68827

Comment 1 Francisco Alonso 2015-03-10 14:32:07 UTC

Fixed upstream in PHP 5.6.6 and 5.5.22:

http://php.net/ChangeLog-5.php#5.6.6
http://php.net/ChangeLog-5.php#5.5.22

Comment 2 Francisco Alonso 2015-03-30 09:34:20 UTC

Statement:

Red Hat Product Security does not consider this bug to have any security impact on the php packages shipped in Red Hat Enterprise Linux. The double free is impossible to trigger because the value of map is NULL at the time efree() is called. When using Zend Memory Manager by default that would result immediately in a Out of memory (OOM) Error.

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