mask mode with 0xFFFFFFFF

lib/internal/validators.js

@@ -61,7 +61,7 @@ function parseFileMode(value, name, def) {
   }
 
   if (isUint32(value)) {
-    return value;
+    return 0xFFFFFFFF & value;
   }
 
   if (typeof value === 'number') {

test/parallel/test-fs-read-stream-throw-type-error.js

@@ -76,5 +76,5 @@ const NOT_SAFE_INTEGER = 2 ** 53;
   createReadStreamErr(example, opts, rangeError)
 );
 
-// Case 8: Should throw RangeError if mode is out of range
-createReadStreamErr(example, { mode: 2176057344 }, rangeError);
+// Case 8: Should not throw any error even if mode is a huge unsigned int32
+fs.createReadStream(example, { mode: 2176057344 });

test/parallel/test-fs-write-stream-huge-unsigned-int-mode.js

@@ -0,0 +1,16 @@
+'use strict';
+require('../common');
+
+// This test ensures that createWriteStream does not crash when the
+// passed mode is a huge unsigned int32, as reported here:
+// https://github.com/nodejs/node/issues/37430
+
+const fs = require('fs');
+const path = require('path');
+
+const tmpdir = require('../common/tmpdir');
+tmpdir.refresh();
+
+const example = path.join(tmpdir.path, 'dummy');
+
+fs.createWriteStream(example, { mode: 2176057344 });