Blocks untrusted apps to access /dev/socket/mdnsd from U
The untrusted apps should not directly access /dev/socket/mdnsd since
API level 34 (U). Only adbd and netd should remain to have access to
/dev/socket/mdnsd. For untrusted apps running with API level 33-, they
still have access to /dev/socket/mdnsd for backward compatibility.
Bug: 265364111
Test: Manual test
Change-Id: Id37998fcb9379fda6917782b0eaee29cd3c51525
diff --git a/private/app_neverallows.te b/private/app_neverallows.te
index 6231623..0579740 100644
--- a/private/app_neverallows.te
+++ b/private/app_neverallows.te
@@ -265,3 +265,26 @@
-mediaprovider
-mediaprovider_app
} { userdebug_or_eng_prop }:file read;
+
+
+# Do not allow untrusted app to access /dev/socket/mdnsd since U. The socket is
+# used to communicate to the mdnsd responder. The mdnsd responder will be
+# replaced by a java implementation which is integrated into the system server.
+# For untrusted apps running with API level 33-, they still have access to
+# /dev/socket/mdnsd for backward compatibility.
+neverallow {
+ all_untrusted_apps
+ -untrusted_app_25
+ -untrusted_app_27
+ -untrusted_app_29
+ -untrusted_app_30
+ -untrusted_app_32
+} mdnsd_socket:sock_file write;
+neverallow {
+ all_untrusted_apps
+ -untrusted_app_25
+ -untrusted_app_27
+ -untrusted_app_29
+ -untrusted_app_30
+ -untrusted_app_32
+} mdnsd:unix_stream_socket connectto;