https://ubuntu.com/security/CVE-2021-26712
CVE-2021-26712 | Ubuntu
Ubuntu is an open source software operating system that runs from the desktop, to the cloud, to all your internet connected things.
cveubuntu
https://bugs.php.net/bug.php?id=26712&edit=2
PHP :: Bug #26712 :: Segfault using readfile() on certain sized files
phpbugsegfaultusingreadfile