From b9a934064598aa655fab4ce75c8eab6165409670 Mon Sep 17 00:00:00 2001
From: Louis Chang <louischang@google.com>
Date: Tue, 2 Aug 2022 03:33:39 +0000
Subject: [PATCH] [RESTRICT AUTOMERGE] Do not send new Intent to non-exported
 activity when navigateUpTo

The new Intent was delivered to a non-exported activity while
#navigateUpTo was called from an Activity of a different uid.

Bug: 238605611
Test: atest StartActivityTests
Change-Id: I854dd825bfd9a2c08851980d480d1f3a177af6cf
Merged-In: I854dd825bfd9a2c08851980d480d1f3a177af6cf
---
 .../com/android/server/wm/ActivityStack.java   | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

diff --git a/services/core/java/com/android/server/wm/ActivityStack.java b/services/core/java/com/android/server/wm/ActivityStack.java
index 81fbcbf093c0f..75af02b796448 100644
--- a/services/core/java/com/android/server/wm/ActivityStack.java
+++ b/services/core/java/com/android/server/wm/ActivityStack.java
@@ -4308,7 +4308,23 @@ class ActivityStack extends ConfigurationContainer {
                     parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_TASK ||
                     parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_TOP ||
                     (destIntentFlags & Intent.FLAG_ACTIVITY_CLEAR_TOP) != 0) {
-                parent.deliverNewIntentLocked(callingUid, destIntent, srec.packageName);
+                boolean abort;
+                try {
+                    final int callingPid = srec.app != null ? srec.app.getPid() : 0;
+                    abort = !mStackSupervisor.checkStartAnyActivityPermission(destIntent,
+                            parent.info, null /* resultWho */, -1 /* requestCode */, callingPid,
+                            callingUid, srec.info.packageName, false /* ignoreTargetSecurity */,
+                            false /* launchingInTask */, srec.app, null /* resultRecord */,
+                            null /* resultRootTask */);
+                } catch (SecurityException e) {
+                    abort = true;
+                }
+                if (abort) {
+                    android.util.EventLog.writeEvent(0x534e4554, "238605611", callingUid, "");
+                    foundParentInTask = false;
+                } else {
+                    parent.deliverNewIntentLocked(callingUid, destIntent, srec.packageName);
+                }
             } else {
                 try {
                     ActivityInfo aInfo = AppGlobals.getPackageManager().getActivityInfo(