Uninitialized Pointer Dereference in PHP

PHP is a server-side scripting language used for web development. This vulnerability allows attackers to execute arbitrary code on the server by manipulating uninitialized pointers in the PHP interpreter.

You're affected if you use PHP versions 7.4 and earlier, specifically due to an incorrect assumption about pointer initialization.
Check with: grep -q 'PHP 7.[0-9]' /etc/php.ini or find /usr/lib/php -name php*.so

1. Upgrade to PHP 7.5 or later from the official website: https://php.net/downloads
2. If immediate upgrade isn't possible, consider applying a patch using the PHP manual's guide for fixing uninitialized pointers.