buffer: check INSPECT_MAX_BYTES with validateNumber

lib/buffer.js

@@ -1401,7 +1401,10 @@ ObjectDefineProperties(module.exports, {
     configurable: true,
     enumerable: true,
     get() { return INSPECT_MAX_BYTES; },
-    set(val) { INSPECT_MAX_BYTES = val; },
+    set(val) {
+      validateNumber(val, 'INSPECT_MAX_BYTES', 0);
+      INSPECT_MAX_BYTES = val;
+    },
   },
 });
 

test/parallel/test-buffer-set-inspect-max-bytes.js

@@ -0,0 +1,34 @@
+'use strict';
+
+require('../common');
+const assert = require('assert');
+const buffer = require('buffer');
+
+const rangeErrorObjs = [NaN, -1];
+const typeErrorObj = 'and even this';
+
+for (const obj of rangeErrorObjs) {
+  assert.throws(
+    () => buffer.INSPECT_MAX_BYTES = obj,
+    {
+      code: 'ERR_OUT_OF_RANGE',
+      name: 'RangeError',
+    }
+  );
+
+  assert.throws(
+    () => buffer.INSPECT_MAX_BYTES = obj,
+    {
+      code: 'ERR_OUT_OF_RANGE',
+      name: 'RangeError',
+    }
+  );
+}
+
+assert.throws(
+  () => buffer.INSPECT_MAX_BYTES = typeErrorObj,
+  {
+    code: 'ERR_INVALID_ARG_TYPE',
+    name: 'TypeError',
+  }
+);