PHP version 7.4.25 (21 Oct 2021)

DOM:

• Fixed bug #81433 (DOMElement::setIdAttribute() called twice may remove ID). (Viktor Volkov)

FFI:

• Fixed bug #79576 ("TYPE *" shows unhelpful message when type is not defined). (Dmitry)

Fileinfo:

• Fixed bug #78987 (High memory usage during encoding detection). (Anatol)

Filter:

• Fixed bug #61700 (FILTER_FLAG_IPV6/FILTER_FLAG_NO_PRIV|RES_RANGE failing). (cmb, Nikita)

FPM:

• Fixed bug #81026 (PHP-FPM oob R/W in root process leading to privilege escalation) (CVE-2021-21703). (Jakub Zelenka)

SPL:

• Fixed bug #80663 (Recursive SplFixedArray::setSize() may cause double-free). (cmb, Nikita, Tyson Andre)

Streams:

• Fixed bug #81475 (stream_isatty emits warning with attached stream wrapper). (cmb)

XML:

• Fixed bug #70962 (XML_OPTION_SKIP_WHITE strips embedded whitespace). (Aliaksandr Bystry, cmb)