untrusted_app_30: add new targetSdk domain

Enforce new requirements on app with targetSdkVersion=32 including:
- No RTM_GETNEIGH on netlink route sockets.
- No RTM_GETNEIGHTBL on netlink route sockets.

Bug: 171572148
Test: atest NetworkInterfaceTest
Test: atest bionic-unit-tests-static
Test: atest CtsSelinuxTargetSdkCurrentTestCases
Test: atest CtsSelinuxTargetSdk30TestCases
Test: atest CtsSelinuxTargetSdk29TestCases
Test: atest CtsSelinuxTargetSdk28TestCases
Test: atest CtsSelinuxTargetSdk27TestCases
Test: atest CompatChangesSelinuxTest
Test: atest NetlinkSocketTest
Change-Id: I2167e6cd564854c2656ee06c2202cfff2b727af5
diff --git a/private/app_neverallows.te b/private/app_neverallows.te
index e64462e..5c41b02 100644
--- a/private/app_neverallows.te
+++ b/private/app_neverallows.te
@@ -11,6 +11,7 @@
   untrusted_app_25
   untrusted_app_27
   untrusted_app_29
+  untrusted_app_30
   untrusted_app_all
 }')
 # Receive or send uevent messages.
@@ -119,6 +120,15 @@
 # Disallow sending RTM_GETLINK messages on netlink sockets.
 neverallow all_untrusted_apps domain:netlink_route_socket { bind nlmsg_readpriv };
 
+# Disallow sending RTM_GETNEIGH{TBL} messages on netlink sockets.
+neverallow {
+  all_untrusted_apps
+  -untrusted_app_25
+  -untrusted_app_27
+  -untrusted_app_29
+  -untrusted_app_30
+} domain:netlink_route_socket nlmsg_getneigh;
+
 # Do not allow untrusted apps access to /cache
 neverallow { all_untrusted_apps -mediaprovider } { cache_file cache_recovery_file }:dir ~{ r_dir_perms };
 neverallow { all_untrusted_apps -mediaprovider } { cache_file cache_recovery_file }:file ~{ read getattr };