Bug #75363 [NEW]: openssl_x509_parse leaks memory

From: kelunik Operating system: Linux PHP version: 7.2.0RC4 Package: OpenSSL related Bug Type: Bug Bug description:openssl_x509_parse leaks memory Description: ------------ openssl_x509_parse leaks memory, which is never freed again. Test certificate is the Let's Encrypt root certificate: https://letsencrypt.org/certs/isrgrootx1.pem.txt https://bugs.php.net/bug.php?id=38261 is already closed and is only about invalid certificates. Test script: --------------- <?php $pem = file_get_contents(__DIR__ . "/test.crt"); $i = 0; while (true) { $cert = openssl_x509_read($pem); $info = openssl_x509_parse($cert); // <-- without it, it doesn't leak openssl_x509_free($cert); unset($cert); if ($i++ % 10000 === 0) { print PHP_EOL; print memory_get_usage(true); print PHP_EOL; } } Expected result: ---------------- 2097152 2097152 2097152 2097152 2097152 2097152 2097152 2097152 Actual result: -------------- 2097152 2097152 4194304 4194304 6295552 6295552 6295552 8392704 -- Edit bug report at https://bugs.php.net/bug.php?id=75363&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=75363&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=75363&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=75363&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=75363&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=75363&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=75363&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=75363&r=needscript Try newer version: https://bugs.php.net/fix.php?id=75363&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=75363&r=support Expected behavior: https://bugs.php.net/fix.php?id=75363&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=75363&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=75363&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=75363&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=75363&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=75363&r=dst IIS Stability: https://bugs.php.net/fix.php?id=75363&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=75363&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=75363&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=75363&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=75363&r=mysqlcfg