--- a/sys/kern/kern_udev.c
+++ b/sys/kern/kern_udev.c
@@ -1010,6 +1010,7 @@
 
 	error = prop_dictionary_copyout_ioctl(pref, cmd, odict);
 
+	prop_object_release(ctx.cdevs);
 	prop_object_release(odict);
 	return error;
 }