Core:
    Fixed bug #77369 (memcpy with negative length via crafted DNS response).
    Fixed bug #71041 (zend_signal_startup() needs ZEND_API).
    Fixed bug #76046 (PHP generates "FE_FREE" opcode on the wrong line).
COM:
    Fixed bug #77177 (Serializing or unserializing COM objects crashes).
Date:
    Fixed bug #77097 (DateTime::diff gives wrong diff when the actual diff is less than 1 second).
Exif:
    Fixed bug #77184 (Unsigned rational numbers are written out as signed rationals).
GD:
    Fixed bug #77269 (efree() on uninitialized Heap data in imagescale leads to use-after-free).
    Fixed bug #77270 (imagecolormatch Out Of Bounds Write on Heap).
    Fixed bug #77195 (Incorrect error handling of imagecreatefromjpeg()).
    Fixed bug #77198 (auto cropping has insufficient precision).
    Fixed bug #77200 (imagecropauto(…, GD_CROP_SIDES) crops left but not right).
IMAP:
    Fixed bug #77020 (null pointer dereference in imap_mail).
Mbstring:
    Fixed bug #77370 (Buffer overflow on mb regex functions - fetch_token).
    Fixed bug #77371 (heap buffer overflow in mb regex functions - compile_string_node).
    Fixed bug #77381 (heap buffer overflow in multibyte match_at).
    Fixed bug #77382 (heap buffer overflow due to incorrect length in expand_case_fold_string).
    Fixed bug #77385 (buffer overflow in fetch_token).
    Fixed bug #77394 (Buffer overflow in multibyte case folding - unicode).
    Fixed bug #77418 (Heap overflow in utf32be_mbc_to_code).
OCI8:
    Fixed bug #76804 (oci_pconnect with OCI_CRED_EXT not working).
    Added oci_set_call_timeout() for call timeouts.
    Added oci_set_db_operation() for the DBOP end-to-end-tracing attribute.
Opcache:
    Fixed bug #77215 (CFG assertion failure on multiple finalizing switch frees in one block).
PDO:
    Handle invalid index passed to PDOStatement::fetchColumn() as error.
Phar:
    Fixed bug #77247 (heap buffer overflow in phar_detect_phar_fname_ext).
Sockets:
    Fixed bug #77136 (Unsupported IPV6_RECVPKTINFO constants on macOS).
SQLite3:
    Fixed bug #77051 (Issue with re-binding on SQLite3).
Xmlrpc:
    Fixed bug #77242 (heap out of bounds read in xmlrpc_decode()).
    Fixed bug #77380 (Global out of bounds read in xmlrpc base64 code).