PHP Group php php 8.5 Update Version 8.5.3

PHP 8.5.3 addresses multiple memory-safety issues, crashes, build failures, and runtime bugs across the core and extensions.

• Fixed a NULL dereference when calling ob_start() from a shutdown function after a bailout in php_output_lock_error().
• Fixed an infinite loop in a garbage-collection destructor fiber.
• Fixed a use-after-free in FE_FREE involving garbage-collection interactions.
• Fixed a use-after-free caused by nested finally blocks with repeated return-type checks.
• Fixed overflow issues involving hooked object properties.
• Fixed a stack overflow in mb_convert_variables() with recursive array references.
• Fixed a segmentation fault in the Tracing JIT involving object references.
• Fixed OpenSSL memory leaks and crashes in certificate parsing and ASN.1 handling.
• Fixed a heap use-after-free in SplDoublyLinkedList iterators when modifying the list during iteration.

• Restored compatibility between the preserve_none feature and LTO.
• Fixed macOS build failures involving musttail and preserve_none.
• Fixed cloning and comparison of internal enums.
• Fixed ReflectionProperty not returning PHPDoc when a property has an attribute containing a closure.
• Fixed Dom\HTMLDocument corrupting closing tags inside scripts.
• Fixed mb_str_pad() division-by-zero errors with invalid-encoding padding strings.
• Fixed Phar::buildFromIterator() when the base directory is missing.
• Fixed construction of PostgreSQL INSERT and UPDATE queries using PQescapeIdentifier() and potential undefined behavior.
• Fixed a memory leak when overriding certain settings through readline_info().
• Fixed lchown() failing to change symlink ownership with ZTS.
• Fixed var_dump() crashes involving nested objects.

• Updated timelib to version 2022.16.

Product Information

Vendor: PHP Group

Product: php

Product type: Software

Variant: php 8.5

Version: 8.5.3

Vendor information published: Feb 12, 2026

Original release notes: View on vendor site

Published on updatealert.io: Oct 28, 2026

Description: A popular general-purpose scripting language that is especially suited to web development. Fast, flexible and pragmatic, PHP powers everything from your blog to the most popular websites in the world.