From 60f390ddf86e0c3353cb4ef0b9171d3a3a66d989 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Josef=20S=C3=B6ntgen?= <josef.soentgen@genode-labs.com>
Date: Thu, 24 Oct 2019 16:50:50 +0200
Subject: [PATCH] noux: prevent accessing invalid leaf path in open

Fixes #3542.
---
 repos/ports/src/noux/syscall.cc | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/repos/ports/src/noux/syscall.cc b/repos/ports/src/noux/syscall.cc
index 2547a0170..1d2722105 100644
--- a/repos/ports/src/noux/syscall.cc
+++ b/repos/ports/src/noux/syscall.cc
@@ -230,6 +230,9 @@ bool Noux::Child::syscall(Noux::Session::Syscall sc)
 				if (&vfs_handle->ds() == &_root_dir)
 					leaf_path = _sysio.open_in.path;
 
+				if (!leaf_path)
+					break;
+
 				Shared_pointer<Io_channel>
 					channel(new (_heap) Vfs_io_channel(_sysio.open_in.path,
 					                                   leaf_path,