PHP version 8.0.10 (26 Aug 2021)

Core:

• Fixed bug #72595 (php_output_handler_append illegal write access). (cmb)
• Fixed bug #66719 (Weird behaviour when using get_called_class() with call_user_func()). (Nikita)
• Fixed bug #81305 (Built-in Webserver Drops Requests With "Upgrade" Header). (cmb)

BCMath:

• Fixed bug #78238 (BCMath returns "-0"). (cmb)

CGI:

• Fixed bug #80849 (HTTP Status header truncation). (cmb)

Date:

• Fixed bug #64975 (Error parsing when AM/PM not at the end). (Derick)
• Fixed bug #78984 (DateTimeZone accepting invalid UTC timezones). (Derick)
• Fixed bug #79580 (date_create_from_format misses leap year). (Derick)
• Fixed bug #80409 (DateTime::modify() loses time with 'weekday' parameter). (Derick)

GD:

• Fixed bug #51498 (imagefilledellipse does not work for large circles). (cmb)

MySQLi:

• Fixed bug #74544 (Integer overflow in mysqli_real_escape_string()). (cmb, johannes)

Opcache:

• Fixed bug #81225 (Wrong result with pow operator with JIT enabled). (Dmitry)
• Fixed bug #81249 (Intermittent property assignment failure with JIT enabled). (Dmitry)
• Fixed bug #81206 (Multiple PHP processes crash with JIT enabled). (cmb, Nikita)
• Fixed bug #81272 (Segfault in var[] after array_slice with JIT). (Nikita)
• Fixed Bug #81255 (Memory leak in PHPUnit with functional JIT). (Dmitry)
• Fixed Bug #80959 (infinite loop in building cfg during JIT compilation) (Nikita, Dmitry)
• Fixed bug #81226 (Integer overflow behavior is different with JIT enabled). (Dmitry)

OpenSSL:

• Fixed bug #81327 (Error build openssl extension on php 7.4.22). (cmb)

PDO_ODBC:

• Fixed bug #81252 (PDO_ODBC doesn't account for SQL_NO_TOTAL). (cmb)

Phar:

• Fixed bug #81211: Symlinks are followed when creating PHAR archive (cmb)

Shmop:

• Fixed bug #81283 (shmop can't read beyond 2147483647 bytes). (cmb, Nikita)

SimpleXML:

• Fixed bug #81325 (Segfault in zif_simplexml_import_dom). (remi)

Standard:

• Fixed bug #72146 (Integer overflow on substr_replace). (cmb)
• Fixed bug #81265 (getimagesize returns 0 for 256px ICO images). (George Dietrich)
• Fixed bug #74960 (Heap buffer overflow via str_repeat). (cmb, Dmitry)

Streams:

• Fixed bug #81294 (Segfault when removing a filter). (cmb)