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Bug #79693 Segmentation fault with preload of laminas-uri\laminas-validator
Submitted: 2020-06-11 23:58 UTC Modified: 2020-06-12 22:22 UTC
Avg. Score:4.0 ± 0.0
Reproduced:1 of 1 (100.0%)
Same Version:1 (100.0%)
Same OS:1 (100.0%)
From: maposov at adobe dot com Assigned:
Status: Closed Package: opcache
PHP Version: 7.4.6 OS: MacOS Mojave 10.14.6
Private report: No CVE-ID: None
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From: maposov at adobe dot com
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 [2020-06-11 23:58 UTC] maposov at adobe dot com
Nginx + php-fpm
Reproduced with 7.4.5 and 7.4.6

Get segmentation fault with preloading of certain classes from laminas. That was detected as part of bigger project. Here is short way to reproduce it:

- include laminas-uri\laminas-validator in your project
        "name": "laminas/laminas-validator",
        "version": "2.13.4",
        "name": "laminas/laminas-uri",
        "version": "2.7.1",

- add following to preload:
     100501 => '/path/vendor/laminas/laminas-uri/src/UriInterface.php',
     100502 => '/path/vendor/laminas/laminas-uri/src/Uri.php',
     100503 => '/path/vendor/laminas/laminas-validator/src/Translator/TranslatorAwareInterface.php',
     100504 => '/path/vendor/laminas/laminas-validator/src/ValidatorInterface.php',
     100505 => '/path/vendor/laminas/laminas-validator/src/AbstractValidator.php',
     100506 => '/path/vendor/laminas/laminas-validator/src/Ip.php',
     100507 => '/path/vendor/laminas/laminas-uri/src/Http.php',

- add following to index.php
     $http = new \Laminas\Uri\Http();
- open index.php in browser

removing 'static' from "static $regex = '/^\[.*\]$/';" (vendor/laminas/laminas-uri/src/Uri.php:1201) makes php-fpm working

Expected result:
php-fpm continue to work

Actual result:
WARNING: [pool www] child 32757 exited on signal 11 (SIGSEGV) after 11.794965 seconds from start
NOTICE: [pool www] child 32784 started


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 [2020-06-12 07:30 UTC]
Just to double check, this does also occur on 7.4.7, not just 7.4.6? I remember fixing something that sounds very related (especially to the use of "static").
 [2020-06-12 22:16 UTC] maposov at adobe dot com
Just in time! :)
Did not have upgrade for to 7.4.7 yesterday for Mac.
I can confirm that I could not reproduce it with 7.4.7 on Mac and php:7.4.7-fpm docker
 [2020-06-12 22:19 UTC] maposov at adobe dot com
(for history: it can be reproduced on 7.4.5 and 7.4.6)
 [2020-06-12 22:22 UTC] maposov at adobe dot com
-Status: Open +Status: Closed -PHP Version: 7.4.7 +PHP Version: 7.4.6
 [2020-06-12 22:22 UTC] maposov at adobe dot com
fixed in 7.4.7
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