Core:
    Fixed bug #74558 (Can't rebind closure returned by Closure::fromCallable()).
    Fixed bug #80345 (PHPIZE configuration has outdated PHP_RELEASE_VERSION).
    Fixed bug #72964 (White space not unfolded for CC/Bcc headers).
    Fixed bug #80362 (Running dtrace scripts can cause php to crash).
    Fixed bug #80393 (Build of PHP extension fails due to configuration gap with libtool).
    Fixed bug #80402 (configure filtering out -lpthread).
    Fixed bug #77069 (stream filter loses final block of data).
Fileinfo:
    Fixed bug #77961 (finfo_open crafted magic parsing SIGABRT).
FPM:
    Fixed bug #69625 (FPM returns 200 status on request without SCRIPT_FILENAME env).
Intl:
    Fixed bug #80425 (MessageFormatAdapter::getArgTypeList redefined).
OpenSSL:
    Fixed bug #80368 (OpenSSL extension fails to build against LibreSSL due to lack of OCB support).
Phar:
    Fixed bug #73809 (Phar Zip parse crash - mmap fail).
    Fixed bug #75102 (`PharData` says invalid checksum for valid tar).
    Fixed bug #77322 (PharData::addEmptyDir('/') Possible integer overflow).
PDO MySQL:
    Fixed bug #80458 (PDOStatement::fetchAll() throws for upsert queries).
    Fixed bug #63185 (nextRowset() ignores MySQL errors with native prepared statements).
    Fixed bug #78152 (PDO::exec() - Bad error handling with multiple commands).
    Fixed bug #70066 (Unexpected "Cannot execute queries while other unbuffered queries").
    Fixed bug #71145 (Multiple statements in init command triggers unbuffered query error).
    Fixed bug #76815 (PDOStatement cannot be GCed/closeCursor-ed when a PROCEDURE resultset SIGNAL).
Standard:
    Fixed bug #77423 (FILTER_VALIDATE_URL accepts URLs with invalid userinfo). (CVE-2020-7071)
    Fixed bug #80366 (Return Value of zend_fstat() not Checked).
    Fixed bug #80411 (References to null-serialized object break serialize()).
Tidy:
    Fixed bug #77594 (ob_tidyhandler is never reset).
Zlib:
    Fixed #48725 (Support for flushing in zlib stream).