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diff --git a/web/core/modules/system/src/MenuAccessControlHandler.php b/web/core/modules/system/src/MenuAccessControlHandler.php
new file mode 100644
index 000000000..034f45a06
--- /dev/null
+++ b/web/core/modules/system/src/MenuAccessControlHandler.php
@@ -0,0 +1,37 @@
+<?php
+
+namespace Drupal\system;
+
+use Drupal\Core\Access\AccessResult;
+use Drupal\Core\Entity\EntityInterface;
+use Drupal\Core\Entity\EntityAccessControlHandler;
+use Drupal\Core\Session\AccountInterface;
+
+/**
+ * Defines the access control handler for the menu entity type.
+ *
+ * @see \Drupal\system\Entity\Menu
+ */
+class MenuAccessControlHandler extends EntityAccessControlHandler {
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function checkAccess(EntityInterface $entity, $operation, AccountInterface $account) {
+    if ($operation === 'view') {
+      return AccessResult::allowed();
+    }
+    // Locked menus could not be deleted.
+    elseif ($operation == 'delete') {
+      if ($entity->isLocked()) {
+        return AccessResult::forbidden()->addCacheableDependency($entity);
+      }
+      else {
+        return parent::checkAccess($entity, $operation, $account)->addCacheableDependency($entity);
+      }
+    }
+
+    return parent::checkAccess($entity, $operation, $account);
+  }
+
+}