diff --git a/pmb/chroot/mount.py b/pmb/chroot/mount.py
index 60779266..5a573200 100644
--- a/pmb/chroot/mount.py
+++ b/pmb/chroot/mount.py
@@ -83,6 +83,9 @@ def mount_dev_tmpfs(args, suffix="native"):
 
     # Create pts, shm folders and device nodes
     pmb.helpers.run.root(args, ["mkdir", "-p", dev + "/pts", dev + "/shm"])
+    pmb.helpers.run.root(args, ["mount", "-t", "tmpfs",
+                                "-o", "nodev,nosuid,noexec",
+                                "tmpfs", dev + "/shm"])
     create_device_nodes(args, suffix)