diff --git a/bin/tests/system/tools/tests.sh b/bin/tests/system/tools/tests.sh
new file mode 100644
index 0000000000..4132d99985
--- /dev/null
+++ b/bin/tests/system/tools/tests.sh
@@ -0,0 +1,24 @@
+#!/usr/sh
+# Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+#
+# SPDX-License-Identifier: MPL-2.0
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0.  If a copy of the MPL was not distributed with this
+# file, you can obtain one at https://mozilla.org/MPL/2.0/.
+#
+# See the COPYRIGHT file distributed with this work for additional
+# information regarding copyright ownership.
+
+set -e
+
+. ../conf.sh
+
+echo_i "tools must not crash if stdio is closed"
+"$NSUPDATE" 0>&-
+"$NSUPDATE" 0>&- 1>&-
+"$NSUPDATE" 0>&- 1>&- 2>&-
+"$NSUPDATE" 0>&- 2>&-
+"$NSUPDATE" 1>&-
+"$NSUPDATE" 1>&- 2>&-
+"$NSUPDATE" 2>&-
diff --git a/bin/tests/system/tools/tests_sh_tools.py b/bin/tests/system/tools/tests_sh_tools.py
new file mode 100644
index 0000000000..b031a8ac70
--- /dev/null
+++ b/bin/tests/system/tools/tests_sh_tools.py
@@ -0,0 +1,18 @@
+# Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+#
+# SPDX-License-Identifier: MPL-2.0
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0.  If a copy of the MPL was not distributed with this
+# file, you can obtain one at https://mozilla.org/MPL/2.0/.
+#
+# See the COPYRIGHT file distributed with this work for additional
+# information regarding copyright ownership.
+
+import pytest
+
+pytestmark = pytest.mark.extra_artifacts([])
+
+
+def test_tools(run_tests_sh):
+    run_tests_sh()
diff --git a/lib/isc/uv.c b/lib/isc/uv.c
index 7ad878cf7f..a7e1a727b2 100644
--- a/lib/isc/uv.c
+++ b/lib/isc/uv.c
@@ -130,6 +130,21 @@ isc__uv_free(void *ptr) {
 
 void
 isc__uv_initialize(void) {
+	/*
+	 * Ensure the first 3 file descriptors are open
+	 * otherwise, libuv may use one and trigger abort
+	 * when closing it.
+	 *
+	 * See https://github.com/libuv/libuv/pull/4559
+	 */
+	do {
+		int fd = open("/dev/null", O_RDWR, 0);
+		RUNTIME_CHECK(fd >= 0);
+		if (fd > STDERR_FILENO) {
+			close(fd);
+			break;
+		}
+	} while (true);
 #if UV_VERSION_HEX >= UV_VERSION(1, 38, 0)
 	int r;
 	isc_mem_create(&isc__uv_mctx);