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Bug #73769 Segfault in preg_match_all
Submitted: 2016-12-17 02:28 UTC Modified: 2020-03-08 04:22 UTC
Votes:2
Avg. Score:4.0 ± 1.0
Reproduced:1 of 1 (100.0%)
Same Version:1 (100.0%)
Same OS:1 (100.0%)
From: mozer624 at gmail dot com Assigned: cmb (profile)
Status: No Feedback Package: *Regular Expressions
PHP Version: 5.6.29 OS: macOS 10.12
Private report: No CVE-ID: None
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 [2016-12-17 02:28 UTC] mozer624 at gmail dot com 
Description:
------------
preg_match_all causes a `Segmentation fault: 11`.

Test script:
---------------
<?php

$pattern = "/^(?P<file>.+?):(?P<line>.+?):(?P<char>.+?): (?P<severity>warning|error): (?P<message>.*) \[(?P<name>.+?)?\]\n(original=\[\[(?P<original>(.|\n)*?)\]\]\nreplacement=\[\[(?P<replacement>(.|\n)*?)\]\])?/m";

$output = <<<EOT
x/x/x.m:520:-8549: error: Using arrayWithObjects:, use @[] instead [Array_With_Objects]
original=[[[NSArray arrayWithObjects:
                                    [NSValue valueWithCGPoint:CGPointMake(1.02, 0.542)],
                                    [NSValue valueWithCGPoint:CGPointMake(1.73, 0.71)],
                                    [NSValue valueWithCGPoint:CGPointMake(2.44, 0.708)],
                                    [NSValue valueWithCGPoint:CGPointMake(3.24, 0.808)],
                                    [NSValue valueWithCGPoint:CGPointMake(3.71, 0.47)],
                                    [NSValue valueWithCGPoint:CGPointMake(4.23, 0.514)],
                                    [NSValue valueWithCGPoint:CGPointMake(4.8, 0.572)],
                                    [NSValue valueWithCGPoint:CGPointMake(5.3, 0.504)],
                                    [NSValue valueWithCGPoint:CGPointMake(6.08, 0.776)],
                                    [NSValue valueWithCGPoint:CGPointMake(6.7, 0.616)],
                                    [NSValue valueWithCGPoint:CGPointMake(7.23, 0.53)],
                                    [NSValue valueWithCGPoint:CGPointMake(7.77, 0.542)],
                                    [NSValue valueWithCGPoint:CGPointMake(8.35, 0.582)],
                                    [NSValue valueWithCGPoint:CGPointMake(9.01, 0.656)],
                                    [NSValue valueWithCGPoint:CGPointMake(9.66, 0.658)],
                                    [NSValue valueWithCGPoint:CGPointMake(10.3, 0.624)],
                                    [NSValue valueWithCGPoint:CGPointMake(11.2, 0.93)],
                                    [NSValue valueWithCGPoint:CGPointMake(11.9, 0.65)],
                                    [NSValue valueWithCGPoint:CGPointMake(12.4, 0.54)],
                                    [NSValue valueWithCGPoint:CGPointMake(13.1, 0.646)],
                                    [NSValue valueWithCGPoint:CGPointMake(13.7, 0.678)],
                                    [NSValue valueWithCGPoint:CGPointMake(14.2, 0.464)],
                                    [NSValue valueWithCGPoint:CGPointMake(14.8, 0.582)],
                                    [NSValue valueWithCGPoint:CGPointMake(15.3, 0.486)],
                                    [NSValue valueWithCGPoint:CGPointMake(15.7, 0.446)],
                                    [NSValue valueWithCGPoint:CGPointMake(16.4, 0.656)],
                                    [NSValue valueWithCGPoint:CGPointMake(16.8, 0.472)],
                                    [NSValue valueWithCGPoint:CGPointMake(17.5, 0.634)],
                                    [NSValue valueWithCGPoint:CGPointMake(18.0, 0.524)],
                                    [NSValue valueWithCGPoint:CGPointMake(18.7, 0.742)],
                                    [NSValue valueWithCGPoint:CGPointMake(19.4, 0.682)],
                                    [NSValue valueWithCGPoint:CGPointMake(19.9, 0.498)],
                                    [NSValue valueWithCGPoint:CGPointMake(20.4, 0.528)],
                                    [NSValue valueWithCGPoint:CGPointMake(21.2, 0.776)],
                                    [NSValue valueWithCGPoint:CGPointMake(21.7, 0.51)],
                                    [NSValue valueWithCGPoint:CGPointMake(22.2, 0.464)],
                                    [NSValue valueWithCGPoint:CGPointMake(22.7, 0.524)],
                                    [NSValue valueWithCGPoint:CGPointMake(23.3, 0.592)],
                                    [NSValue valueWithCGPoint:CGPointMake(23.8, 0.536)],
                                    [NSValue valueWithCGPoint:CGPointMake(24.4, 0.558)],
                                    [NSValue valueWithCGPoint:CGPointMake(25.2, 0.838)],
                                    [NSValue valueWithCGPoint:CGPointMake(25.8, 0.556)],
                                    [NSValue valueWithCGPoint:CGPointMake(26.4, 0.55)],
                                    [NSValue valueWithCGPoint:CGPointMake(27.0, 0.672)],
                                    [NSValue valueWithCGPoint:CGPointMake(27.8, 0.766)],
                                    [NSValue valueWithCGPoint:CGPointMake(28.4, 0.652)],
                                    [NSValue valueWithCGPoint:CGPointMake(29.1, 0.61)],
                                    [NSValue valueWithCGPoint:CGPointMake(30.2, 1.19)],
                                    [NSValue valueWithCGPoint:CGPointMake(30.8, 0.598)],
                                    [NSValue valueWithCGPoint:CGPointMake(31.5, 0.696)],
                                    [NSValue valueWithCGPoint:CGPointMake(32.0, 0.428)],
                                    [NSValue valueWithCGPoint:CGPointMake(32.6, 0.632)],
                                    [NSValue valueWithCGPoint:CGPointMake(33.4, 0.766)],
                                    [NSValue valueWithCGPoint:CGPointMake(34.2, 0.838)],
                                    [NSValue valueWithCGPoint:CGPointMake(34.9, 0.728)],
                                    [NSValue valueWithCGPoint:CGPointMake(35.5, 0.608)],
                                    [NSValue valueWithCGPoint:CGPointMake(36.0, 0.44)],
                                    [NSValue valueWithCGPoint:CGPointMake(36.8, 0.854)],
                                    [NSValue valueWithCGPoint:CGPointMake(37.3, 0.476)],
                                    [NSValue valueWithCGPoint:CGPointMake(38.0, 0.686)],
                                    [NSValue valueWithCGPoint:CGPointMake(38.5, 0.482)],
                                    [NSValue valueWithCGPoint:CGPointMake(39.0, 0.574)],
                                    [NSValue valueWithCGPoint:CGPointMake(39.7, 0.664)],
                                    [NSValue valueWithCGPoint:CGPointMake(40.2, 0.504)],
                                    [NSValue valueWithCGPoint:CGPointMake(41.1, 0.878)],
                                    [NSValue valueWithCGPoint:CGPointMake(41.6, 0.552)],
                                    [NSValue valueWithCGPoint:CGPointMake(42.5, 0.804)],
                                    [NSValue valueWithCGPoint:CGPointMake(43.0, 0.536)],
                                    [NSValue valueWithCGPoint:CGPointMake(43.5, 0.486)],
                                    [NSValue valueWithCGPoint:CGPointMake(44.1, 0.586)],
                                    [NSValue valueWithCGPoint:CGPointMake(44.6, 0.494)],
                                    [NSValue valueWithCGPoint:CGPointMake(45.4, 0.892)],
                                    [NSValue valueWithCGPoint:CGPointMake(46.0, 0.532)],
                                    [NSValue valueWithCGPoint:CGPointMake(46.5, 0.572)],
                                    [NSValue valueWithCGPoint:CGPointMake(47.1, 0.592)],
                                    [NSValue valueWithCGPoint:CGPointMake(47.8, 0.684)],
                                    [NSValue valueWithCGPoint:CGPointMake(48.4, 0.58)],
                                    [NSValue valueWithCGPoint:CGPointMake(48.9, 0.474)],
                                    [NSValue valueWithCGPoint:CGPointMake(49.5, 0.648)],
                                    [NSValue valueWithCGPoint:CGPointMake(50.1, 0.554)],
                                    [NSValue valueWithCGPoint:CGPointMake(50.6, 0.476)],
                                    [NSValue valueWithCGPoint:CGPointMake(51.2, 0.602)],
                                    [NSValue valueWithCGPoint:CGPointMake(51.8, 0.686)],
                                    [NSValue valueWithCGPoint:CGPointMake(52.4, 0.6)],
                                    [NSValue valueWithCGPoint:CGPointMake(53.1, 0.632)],
                                    [NSValue valueWithCGPoint:CGPointMake(53.6, 0.556)],
                                    [NSValue valueWithCGPoint:CGPointMake(54.1, 0.514)],
                                    [NSValue valueWithCGPoint:CGPointMake(54.8, 0.62)],
                                    [NSValue valueWithCGPoint:CGPointMake(55.3, 0.58)],
                                    [NSValue valueWithCGPoint:CGPointMake(56.0, 0.642)],
                                    [NSValue valueWithCGPoint:CGPointMake(56.7, 0.742)],
                                    [NSValue valueWithCGPoint:CGPointMake(57.5, 0.76)],
                                    [NSValue valueWithCGPoint:CGPointMake(58.1, 0.57)],
                                    [NSValue valueWithCGPoint:CGPointMake(58.5, 0.478)],
                                    [NSValue valueWithCGPoint:CGPointMake(59.2, 0.652)],
                                    [NSValue valueWithCGPoint:CGPointMake(59.7, 0.558)],
                                    nil]]]
replacement=[[@[
                                    [NSValue valueWithCGPoint:CGPointMake(1.02, 0.542)],
                                    [NSValue valueWithCGPoint:CGPointMake(1.73, 0.71)],
                                    [NSValue valueWithCGPoint:CGPointMake(2.44, 0.708)],
                                    [NSValue valueWithCGPoint:CGPointMake(3.24, 0.808)],
                                    [NSValue valueWithCGPoint:CGPointMake(3.71, 0.47)],
                                    [NSValue valueWithCGPoint:CGPointMake(4.23, 0.514)],
                                    [NSValue valueWithCGPoint:CGPointMake(4.8, 0.572)],
                                    [NSValue valueWithCGPoint:CGPointMake(5.3, 0.504)],
                                    [NSValue valueWithCGPoint:CGPointMake(6.08, 0.776)],
                                    [NSValue valueWithCGPoint:CGPointMake(6.7, 0.616)],
                                    [NSValue valueWithCGPoint:CGPointMake(7.23, 0.53)],
                                    [NSValue valueWithCGPoint:CGPointMake(7.77, 0.542)],
                                    [NSValue valueWithCGPoint:CGPointMake(8.35, 0.582)],
                                    [NSValue valueWithCGPoint:CGPointMake(9.01, 0.656)],
                                    [NSValue valueWithCGPoint:CGPointMake(9.66, 0.658)],
                                    [NSValue valueWithCGPoint:CGPointMake(10.3, 0.624)],
                                    [NSValue valueWithCGPoint:CGPointMake(11.2, 0.93)],
                                    [NSValue valueWithCGPoint:CGPointMake(11.9, 0.65)],
                                    [NSValue valueWithCGPoint:CGPointMake(12.4, 0.54)],
                                    [NSValue valueWithCGPoint:CGPointMake(13.1, 0.646)],
                                    [NSValue valueWithCGPoint:CGPointMake(13.7, 0.678)],
                                    [NSValue valueWithCGPoint:CGPointMake(14.2, 0.464)],
                                    [NSValue valueWithCGPoint:CGPointMake(14.8, 0.582)],
                                    [NSValue valueWithCGPoint:CGPointMake(15.3, 0.486)],
                                    [NSValue valueWithCGPoint:CGPointMake(15.7, 0.446)],
                                    [NSValue valueWithCGPoint:CGPointMake(16.4, 0.656)],
                                    [NSValue valueWithCGPoint:CGPointMake(16.8, 0.472)],
                                    [NSValue valueWithCGPoint:CGPointMake(17.5, 0.634)],
                                    [NSValue valueWithCGPoint:CGPointMake(18.0, 0.524)],
                                    [NSValue valueWithCGPoint:CGPointMake(18.7, 0.742)],
                                    [NSValue valueWithCGPoint:CGPointMake(19.4, 0.682)],
                                    [NSValue valueWithCGPoint:CGPointMake(19.9, 0.498)],
                                    [NSValue valueWithCGPoint:CGPointMake(20.4, 0.528)],
                                    [NSValue valueWithCGPoint:CGPointMake(21.2, 0.776)],
                                    [NSValue valueWithCGPoint:CGPointMake(21.7, 0.51)],
                                    [NSValue valueWithCGPoint:CGPointMake(22.2, 0.464)],
                                    [NSValue valueWithCGPoint:CGPointMake(22.7, 0.524)],
                                    [NSValue valueWithCGPoint:CGPointMake(23.3, 0.592)],
                                    [NSValue valueWithCGPoint:CGPointMake(23.8, 0.536)],
                                    [NSValue valueWithCGPoint:CGPointMake(24.4, 0.558)],
                                    [NSValue valueWithCGPoint:CGPointMake(25.2, 0.838)],
                                    [NSValue valueWithCGPoint:CGPointMake(25.8, 0.556)],
                                    [NSValue valueWithCGPoint:CGPointMake(26.4, 0.55)],
                                    [NSValue valueWithCGPoint:CGPointMake(27.0, 0.672)],
                                    [NSValue valueWithCGPoint:CGPointMake(27.8, 0.766)],
                                    [NSValue valueWithCGPoint:CGPointMake(28.4, 0.652)],
                                    [NSValue valueWithCGPoint:CGPointMake(29.1, 0.61)],
                                    [NSValue valueWithCGPoint:CGPointMake(30.2, 1.19)],
                                    [NSValue valueWithCGPoint:CGPointMake(30.8, 0.598)],
                                    [NSValue valueWithCGPoint:CGPointMake(31.5, 0.696)],
                                    [NSValue valueWithCGPoint:CGPointMake(32.0, 0.428)],
                                    [NSValue valueWithCGPoint:CGPointMake(32.6, 0.632)],
                                    [NSValue valueWithCGPoint:CGPointMake(33.4, 0.766)],
                                    [NSValue valueWithCGPoint:CGPointMake(34.2, 0.838)],
                                    [NSValue valueWithCGPoint:CGPointMake(34.9, 0.728)],
                                    [NSValue valueWithCGPoint:CGPointMake(35.5, 0.608)],
                                    [NSValue valueWithCGPoint:CGPointMake(36.0, 0.44)],
                                    [NSValue valueWithCGPoint:CGPointMake(36.8, 0.854)],
                                    [NSValue valueWithCGPoint:CGPointMake(37.3, 0.476)],
                                    [NSValue valueWithCGPoint:CGPointMake(38.0, 0.686)],
                                    [NSValue valueWithCGPoint:CGPointMake(38.5, 0.482)],
                                    [NSValue valueWithCGPoint:CGPointMake(39.0, 0.574)],
                                    [NSValue valueWithCGPoint:CGPointMake(39.7, 0.664)],
                                    [NSValue valueWithCGPoint:CGPointMake(40.2, 0.504)],
                                    [NSValue valueWithCGPoint:CGPointMake(41.1, 0.878)],
                                    [NSValue valueWithCGPoint:CGPointMake(41.6, 0.552)],
                                    [NSValue valueWithCGPoint:CGPointMake(42.5, 0.804)],
                                    [NSValue valueWithCGPoint:CGPointMake(43.0, 0.536)],
                                    [NSValue valueWithCGPoint:CGPointMake(43.5, 0.486)],
                                    [NSValue valueWithCGPoint:CGPointMake(44.1, 0.586)],
                                    [NSValue valueWithCGPoint:CGPointMake(44.6, 0.494)],
                                    [NSValue valueWithCGPoint:CGPointMake(45.4, 0.892)],
                                    [NSValue valueWithCGPoint:CGPointMake(46.0, 0.532)],
                                    [NSValue valueWithCGPoint:CGPointMake(46.5, 0.572)],
                                    [NSValue valueWithCGPoint:CGPointMake(47.1, 0.592)],
                                    [NSValue valueWithCGPoint:CGPointMake(47.8, 0.684)],
                                    [NSValue valueWithCGPoint:CGPointMake(48.4, 0.58)],
                                    [NSValue valueWithCGPoint:CGPointMake(48.9, 0.474)],
                                    [NSValue valueWithCGPoint:CGPointMake(49.5, 0.648)],
                                    [NSValue valueWithCGPoint:CGPointMake(50.1, 0.554)],
                                    [NSValue valueWithCGPoint:CGPointMake(50.6, 0.476)],
                                    [NSValue valueWithCGPoint:CGPointMake(51.2, 0.602)],
                                    [NSValue valueWithCGPoint:CGPointMake(51.8, 0.686)],
                                    [NSValue valueWithCGPoint:CGPointMake(52.4, 0.6)],
                                    [NSValue valueWithCGPoint:CGPointMake(53.1, 0.632)],
                                    [NSValue valueWithCGPoint:CGPointMake(53.6, 0.556)],
                                    [NSValue valueWithCGPoint:CGPointMake(54.1, 0.514)],
                                    [NSValue valueWithCGPoint:CGPointMake(54.8, 0.62)],
                                    [NSValue valueWithCGPoint:CGPointMake(55.3, 0.58)],
                                    [NSValue valueWithCGPoint:CGPointMake(56.0, 0.642)],
                                    [NSValue valueWithCGPoint:CGPointMake(56.7, 0.742)],
                                    [NSValue valueWithCGPoint:CGPointMake(57.5, 0.76)],
                                    [NSValue valueWithCGPoint:CGPointMake(58.1, 0.57)],
                                    [NSValue valueWithCGPoint:CGPointMake(58.5, 0.478)],
                                    [NSValue valueWithCGPoint:CGPointMake(59.2, 0.652)],
                                    [NSValue valueWithCGPoint:CGPointMake(59.7, 0.558)]]]]
EOT;


$matches = null;
var_dump(preg_match_all($pattern, $output, $matches, PREG_SET_ORDER));
var_dump($matches);


?>

Expected result:
----------------
No seg fault and actually a match with the regex.

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Pull Requests

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History

AllCommentsChangesGit/SVN commitsRelated reports
 [2020-02-28 16:47 UTC] cmb@php.net
-Status: Open +Status: Feedback -Assigned To: +Assigned To: cmb
 [2020-02-28 16:47 UTC] cmb@php.net 
I cannot reproduce the segfault with PHP 7.3.  Can you reproduce
it with any of the actively supported versions[1]?  If so, please
provide the version of libpcre (PCRE_VERSION), and also a
backtrace[2].

[1] <https://www.php.net/supported-versions.php>
[2] <http://bugs.php.net/bugs-generating-backtrace.php>
 [2020-03-08 04:22 UTC] php-bugs at lists dot php dot net 
No feedback was provided. The bug is being suspended because
we assume that you are no longer experiencing the problem.
If this is not the case and you are able to provide the
information that was requested earlier, please do so and
change the status of the bug back to "Re-Opened". Thank you.
 
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