This update for php53 fixes the following issues:
- CVE-2016-7411: php5: Memory corruption when destructing deserialized object
- CVE-2016-7412: Heap overflow in mysqlnd when not receiving UNSIGNED_FLAG in BIT field
- CVE-2016-7413: Use after free in wddx_deserialize
- CVE-2016-7414: Out of bounds heap read when verifying signature of zip phar in phar_parse_zipfile
- CVE-2016-7416: Stack based buffer overflow in msgfmt_format_message
- CVE-2016-7417: Missing type check when unserializing SplArray
- CVE-2016-7418: Null pointer dereference in php_wddx_push_element