From a91d25dca65cdc6ddf87cff3a2e1f6a927d36a36 Mon Sep 17 00:00:00 2001
From: Jan Tojnar <jtojnar@gmail.com>
Date: Fri, 31 Dec 2021 23:40:32 +0100
Subject: [PATCH 1/3] Console: close tty detection process

---
 src/Symfony/Component/Console/Cursor.php | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/Symfony/Component/Console/Cursor.php b/src/Symfony/Component/Console/Cursor.php
index dcb5b5ad39854..b9e2341829657 100644
--- a/src/Symfony/Component/Console/Cursor.php
+++ b/src/Symfony/Component/Console/Cursor.php
@@ -145,7 +145,14 @@ public function getCurrentPosition(): array
         static $isTtySupported;
 
         if (null === $isTtySupported && \function_exists('proc_open')) {
-            $isTtySupported = (bool) @proc_open('echo 1 >/dev/null', [['file', '/dev/tty', 'r'], ['file', '/dev/tty', 'w'], ['file', '/dev/tty', 'w']], $pipes);
+            $handle = @proc_open('echo 1 >/dev/null', [['file', '/dev/tty', 'r'], ['file', '/dev/tty', 'w'], ['file', '/dev/tty', 'w']], $pipes);
+            $isTtySupported = (bool) $handle;
+            if (false !== $handle) {
+                fclose($pipes[0]);
+                fclose($pipes[1]);
+                fclose($pipes[2]);
+                proc_close($handle);
+            }
         }
 
         if (!$isTtySupported) {

From 38c35835c90620ec413e831f16e3b73b92d2007b Mon Sep 17 00:00:00 2001
From: Jan Tojnar <jtojnar@gmail.com>
Date: Fri, 31 Dec 2021 23:42:13 +0100
Subject: [PATCH 2/3] Console: close php://input handle

---
 src/Symfony/Component/Console/Cursor.php | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/src/Symfony/Component/Console/Cursor.php b/src/Symfony/Component/Console/Cursor.php
index b9e2341829657..776f44c2be5ba 100644
--- a/src/Symfony/Component/Console/Cursor.php
+++ b/src/Symfony/Component/Console/Cursor.php
@@ -20,11 +20,12 @@ final class Cursor
 {
     private $output;
     private $input;
+    private $inputResource = null;
 
     public function __construct(OutputInterface $output, $input = null)
     {
         $this->output = $output;
-        $this->input = $input ?? (\defined('STDIN') ? \STDIN : fopen('php://input', 'r+'));
+        $this->input = $input ?? (\defined('STDIN') ? \STDIN : $this->inputResource = fopen('php://input', 'r+'));
     }
 
     public function moveUp(int $lines = 1): self
@@ -172,4 +173,11 @@ public function getCurrentPosition(): array
 
         return [$col, $row];
     }
+
+    public function __destruct()
+    {
+        if (null !== $this->inputResource) {
+            fclose($this->inputResource);
+        }
+    }
 }

From 454ce55d26393833b824549c46cfb4a376d4536d Mon Sep 17 00:00:00 2001
From: Jan Tojnar <jtojnar@gmail.com>
Date: Sat, 1 Jan 2022 00:10:44 +0100
Subject: [PATCH 3/3] Process: close process handles

---
 src/Symfony/Component/Process/Process.php | 26 ++++++++++++++++++++---
 1 file changed, 23 insertions(+), 3 deletions(-)

diff --git a/src/Symfony/Component/Process/Process.php b/src/Symfony/Component/Process/Process.php
index 952cae2afc453..ad6e16b84cec4 100644
--- a/src/Symfony/Component/Process/Process.php
+++ b/src/Symfony/Component/Process/Process.php
@@ -1255,7 +1255,14 @@ public static function isTtySupported(): bool
         static $isTtySupported;
 
         if (null === $isTtySupported) {
-            $isTtySupported = (bool) @proc_open('echo 1 >/dev/null', [['file', '/dev/tty', 'r'], ['file', '/dev/tty', 'w'], ['file', '/dev/tty', 'w']], $pipes);
+            $handle = @proc_open('echo 1 >/dev/null', [['file', '/dev/tty', 'r'], ['file', '/dev/tty', 'w'], ['file', '/dev/tty', 'w']], $pipes);
+            $isTtySupported = (bool) $handle;
+            if (false !== $handle) {
+                fclose($pipes[0]);
+                fclose($pipes[1]);
+                fclose($pipes[2]);
+                proc_close($handle);
+            }
         }
 
         return $isTtySupported;
@@ -1278,7 +1285,16 @@ public static function isPtySupported()
             return $result = false;
         }
 
-        return $result = (bool) @proc_open('echo 1 >/dev/null', [['pty'], ['pty'], ['pty']], $pipes);
+        $handle = @proc_open('echo 1 >/dev/null', [['pty'], ['pty'], ['pty']], $pipes);
+        $result = (bool) $handle;
+        if (false !== $handle) {
+            fclose($pipes[0]);
+            fclose($pipes[1]);
+            fclose($pipes[2]);
+            proc_close($handle);
+        }
+
+        return $result;
     }
 
     /**
@@ -1517,8 +1533,12 @@ private function doSignal(int $signal, bool $throwException): bool
                 $ok = @proc_terminate($this->process, $signal);
             } elseif (\function_exists('posix_kill')) {
                 $ok = @posix_kill($pid, $signal);
-            } elseif ($ok = proc_open(sprintf('kill -%d %d', $signal, $pid), [2 => ['pipe', 'w']], $pipes)) {
+            } elseif ($handle = proc_open(sprintf('kill -%d %d', $signal, $pid), [2 => ['pipe', 'w']], $pipes)) {
                 $ok = false === fgets($pipes[2]);
+                fclose($pipes[2]);
+                proc_close($handle);
+            } else {
+                $ok = false;
             }
             if (!$ok) {
                 if ($throwException) {