diff --git a/service/src/com/android/server/ConnectivityService.java b/service/src/com/android/server/ConnectivityService.java
index a0e75ec..81bb4f5 100644
--- a/service/src/com/android/server/ConnectivityService.java
+++ b/service/src/com/android/server/ConnectivityService.java
@@ -5467,6 +5467,7 @@
     @Override
     @Deprecated
     public int getLastTetherError(String iface) {
+        enforceAccessPermission();
         final TetheringManager tm = (TetheringManager) mContext.getSystemService(
                 Context.TETHERING_SERVICE);
         return tm.getLastTetherError(iface);
@@ -5475,6 +5476,7 @@
     @Override
     @Deprecated
     public String[] getTetherableIfaces() {
+        enforceAccessPermission();
         final TetheringManager tm = (TetheringManager) mContext.getSystemService(
                 Context.TETHERING_SERVICE);
         return tm.getTetherableIfaces();
@@ -5483,6 +5485,7 @@
     @Override
     @Deprecated
     public String[] getTetheredIfaces() {
+        enforceAccessPermission();
         final TetheringManager tm = (TetheringManager) mContext.getSystemService(
                 Context.TETHERING_SERVICE);
         return tm.getTetheredIfaces();
@@ -5492,6 +5495,7 @@
     @Override
     @Deprecated
     public String[] getTetheringErroredIfaces() {
+        enforceAccessPermission();
         final TetheringManager tm = (TetheringManager) mContext.getSystemService(
                 Context.TETHERING_SERVICE);
 
@@ -5501,6 +5505,7 @@
     @Override
     @Deprecated
     public String[] getTetherableUsbRegexs() {
+        enforceAccessPermission();
         final TetheringManager tm = (TetheringManager) mContext.getSystemService(
                 Context.TETHERING_SERVICE);
 
@@ -5510,6 +5515,7 @@
     @Override
     @Deprecated
     public String[] getTetherableWifiRegexs() {
+        enforceAccessPermission();
         final TetheringManager tm = (TetheringManager) mContext.getSystemService(
                 Context.TETHERING_SERVICE);
         return tm.getTetherableWifiRegexs();
diff --git a/tests/unit/java/com/android/server/ConnectivityServiceTest.java b/tests/unit/java/com/android/server/ConnectivityServiceTest.java
index 4c76803..a4ee78f 100644
--- a/tests/unit/java/com/android/server/ConnectivityServiceTest.java
+++ b/tests/unit/java/com/android/server/ConnectivityServiceTest.java
@@ -16,6 +16,7 @@
 
 package com.android.server;
 
+import static android.Manifest.permission.ACCESS_NETWORK_STATE;
 import static android.Manifest.permission.CHANGE_NETWORK_STATE;
 import static android.Manifest.permission.CONNECTIVITY_USE_RESTRICTED_NETWORKS;
 import static android.Manifest.permission.CONTROL_OEM_PAID_NETWORK_PREFERENCE;
@@ -269,6 +270,7 @@
 import android.net.RouteInfoParcel;
 import android.net.SocketKeepalive;
 import android.net.TelephonyNetworkSpecifier;
+import android.net.TetheringManager;
 import android.net.TransportInfo;
 import android.net.UidRange;
 import android.net.UidRangeParcel;
@@ -543,6 +545,7 @@
     @Mock PacProxyManager mPacProxyManager;
     @Mock BpfNetMaps mBpfNetMaps;
     @Mock CarrierPrivilegeAuthenticator mCarrierPrivilegeAuthenticator;
+    @Mock TetheringManager mTetheringManager;
 
     // BatteryStatsManager is final and cannot be mocked with regular mockito, so just mock the
     // underlying binder calls.
@@ -663,6 +666,7 @@
             if (Context.NETWORK_STATS_SERVICE.equals(name)) return mStatsManager;
             if (Context.BATTERY_STATS_SERVICE.equals(name)) return mBatteryStatsManager;
             if (Context.PAC_PROXY_SERVICE.equals(name)) return mPacProxyManager;
+            if (Context.TETHERING_SERVICE.equals(name)) return mTetheringManager;
             return super.getSystemService(name);
         }
 
@@ -15699,4 +15703,36 @@
         mCm.reportNetworkConnectivity(mWiFiNetworkAgent.getNetwork(), false);
         mDefaultNetworkCallback.expectAvailableCallbacksValidated(mCellNetworkAgent);
     }
+
+    @Test
+    public void testLegacyTetheringApiGuardWithProperPermission() throws Exception {
+        final String testIface = "test0";
+        mServiceContext.setPermission(ACCESS_NETWORK_STATE, PERMISSION_DENIED);
+        assertThrows(SecurityException.class, () -> mService.getLastTetherError(testIface));
+        assertThrows(SecurityException.class, () -> mService.getTetherableIfaces());
+        assertThrows(SecurityException.class, () -> mService.getTetheredIfaces());
+        assertThrows(SecurityException.class, () -> mService.getTetheringErroredIfaces());
+        assertThrows(SecurityException.class, () -> mService.getTetherableUsbRegexs());
+        assertThrows(SecurityException.class, () -> mService.getTetherableWifiRegexs());
+
+        withPermission(ACCESS_NETWORK_STATE, () -> {
+            mService.getLastTetherError(testIface);
+            verify(mTetheringManager).getLastTetherError(testIface);
+
+            mService.getTetherableIfaces();
+            verify(mTetheringManager).getTetherableIfaces();
+
+            mService.getTetheredIfaces();
+            verify(mTetheringManager).getTetheredIfaces();
+
+            mService.getTetheringErroredIfaces();
+            verify(mTetheringManager).getTetheringErroredIfaces();
+
+            mService.getTetherableUsbRegexs();
+            verify(mTetheringManager).getTetherableUsbRegexs();
+
+            mService.getTetherableWifiRegexs();
+            verify(mTetheringManager).getTetherableWifiRegexs();
+        });
+    }
 }