Update src/string_bytes.cc

Co-authored-by: Gürgün Dayıoğlu <hey@gurgun.day>

Author: ChALkeR

src/string_bytes.cc

@@ -543,6 +543,10 @@ MaybeLocal<Value> StringBytes::Encode(Isolate* isolate,
         // We know that we are non-ASCII (and are unlikely Latin1), use 2-byte
         // In the most likely case of valid UTF-8, we can use this fast impl
         size_t u16size = simdutf::utf16_length_from_utf8(buf, buflen);
+        if (u16size > static_cast<size_t>(v8::String::kMaxLength)) {
+          isolate->ThrowException(node::ERR_STRING_TOO_LONG(isolate));
+          return MaybeLocal<Value>();
+        }
         uint16_t* dst = node::UncheckedMalloc<uint16_t>(u16size);
         if (u16size != 0 && dst == nullptr) {
            isolate->ThrowException(node::ERR_MEMORY_ALLOCATION_FAILED(isolate));