Bug #79881 [Ver->Asn]: Memory leak in openssl_pkey_get_public()

Edit report at https://bugs.php.net/bug.php?id=79881&edit=1 ID: 79881 Updated by: nikic@php.net Reported by: nikita dot korzhitskii at liu dot se -Summary: Memory leak, openssl_pkey_get_public() +Summary: Memory leak in openssl_pkey_get_public() -Status: Verified +Status: Assigned Type: Bug Package: OpenSSL related Operating System: Linux, macOS -PHP Version: master-Git-2020-07-21 (Git) +PHP Version: 7.3 -Assigned To: +Assigned To: nikic Block user comment: N Private report: N Previous Comments: ------------------------------------------------------------------------ [2020-07-21 23:11:25] nikita dot korzhitskii at liu dot se 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 this bug report at https://bugs.php.net/bug.php?id=79881&edit=1