From db2bad4368517062aaf4debbba89af1bb377b9a5 Mon Sep 17 00:00:00 2001
From: Yu Watanabe <watanabe.yu+github@gmail.com>
Date: Tue, 9 Mar 2021 16:11:52 +0900
Subject: [PATCH] sd-device: check the validity of device id

The device id is used as filename under /run/udev/data or
/run/udev/watch.
---
 src/libsystemd/sd-device/sd-device.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/libsystemd/sd-device/sd-device.c b/src/libsystemd/sd-device/sd-device.c
index decf9ae1d1..233bb6df5d 100644
--- a/src/libsystemd/sd-device/sd-device.c
+++ b/src/libsystemd/sd-device/sd-device.c
@@ -1306,6 +1306,9 @@ int device_get_device_id(sd_device *device, const char **ret) {
                                 return -ENOMEM;
                 }
 
+                if (!filename_is_valid(id))
+                        return -EINVAL;
+
                 device->device_id = TAKE_PTR(id);
         }
 
-- 
2.25.1