Bug #79881 [NEW]: Memory leak, openssl_pkey_get_public()

From: nikita dot korzhitskii at liu dot se Operating system: Linux, macOS PHP version: master-Git-2020-07-21 (Git) Package: OpenSSL related Bug Type: Bug Bug description:Memory leak, openssl_pkey_get_public() Description: ------------ Memory seems to be leaking, when extracting public keys from x509 certificates with openssl_pkey_get_public(). Resources do not free automatically, with openssl_pkey_free(), unset(), or null-assignment. The leakage is observed on PHP 7.1.23 macOS Darwin Kernel Version 18.7.0 + LibreSSL 2.2.7/2.6.5, PHP 7.2.24-0ubuntu0.18.04.6 + OpenSSL/1.1.1 PHP 8.0.0-dev Ubuntu + OpenSSL/1.1.1 The test script is provided. Test script: --------------- https://gist.github.com/nikita-kun/88b80583a4d12230910040cf2cd3031d Expected result: ---------------- Constant memory usage Actual result: -------------- Memory usage, real: 2097152 Memory usage, real: 4194304 Memory usage, real: 6295552 ... Memory usage, real: 106958848 Memory usage, real: 109056000 Warning: openssl_x509_read(): Supplied parameter cannot be coerced into an X509 certificate! in ./php-src/memleak.php on line 38 Fatal error: Uncaught TypeError: openssl_pkey_free(): Argument #1 ($key) must be of type resource, bool given in ./php-src/memleak.php:41 Stack trace: #0 ./php-src/memleak.php(41): openssl_pkey_free(false) #1 ./php-src/memleak.php(56): fastLeakage() #2 {main} thrown in ./php-src/memleak.php on line 41 Killed OR "Fatal error: Allowed memory ... exhausted". -- Edit bug report at https://bugs.php.net/bug.php?id=79881&edit=1 -- Fix committed: https://bugs.php.net/fix.php?id=79881&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=79881&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=79881&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=79881&r=needscript Try newer version: https://bugs.php.net/fix.php?id=79881&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=79881&r=support Expected behavior: https://bugs.php.net/fix.php?id=79881&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=79881&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=79881&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=79881&r=globals PHP version support discontinued: https://bugs.php.net/fix.php?id=79881&r=phptooold Daylight Savings: https://bugs.php.net/fix.php?id=79881&r=dst IIS Stability: https://bugs.php.net/fix.php?id=79881&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=79881&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=79881&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=79881&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=79881&r=mysqlcfg