Bug #76267 [NEW]: pg_escape_string, pg_send_query will cause a segfault in some rare cases

From: nick dot ilyin at oracle dot com Operating system: Ubuntu 16.04.4 LTS PHP version: 7.1.16 Package: PDO PgSQL Bug Type: Bug Bug description:pg_escape_string, pg_send_query will cause a segfault in some rare cases Description: ------------ In some rare cases both pg_escape_string and pg_send_query cause a segfault in Apache/2.4.18. Unfortunately it happens in cases where I cannot replicate outside of our stack with a test script. However, I have a test machine up where I can replicate the issue consistently so I can provide whatever information is necessary from there. I can provide whatever output is needed. Test script: --------------- Unable to provide given the nature of not knowing how to reproduce the issue in a simple test script. This issue is fully reproducible in a brand new machine built on our stack and is reproducible on brand new Ubuntu 16.04.4 machines using PHP 7.1.16. Expected result: ---------------- No segmentation fault. Actual result: -------------- In the error log: [Wed Apr 25 10:32:28.271689 2018] [core:notice] [pid 32568] AH00052: child pid 12510 exit signal Segmentation fault (11) -- Edit bug report at https://bugs.php.net/bug.php?id=76267&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=76267&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=76267&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=76267&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=76267&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=76267&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=76267&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=76267&r=needscript Try newer version: https://bugs.php.net/fix.php?id=76267&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=76267&r=support Expected behavior: https://bugs.php.net/fix.php?id=76267&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=76267&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=76267&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=76267&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=76267&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=76267&r=dst IIS Stability: https://bugs.php.net/fix.php?id=76267&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=76267&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=76267&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=76267&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=76267&r=mysqlcfg