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Commit 5cf9f41e authored by Varun Shah's avatar Varun Shah
Browse files

Added an app id security check in isAppForeground. 

ActivityManagerService#isAppForeground now checks if the caller has the
permission to view if an app is in the foreground.

Bug: 115384617
Test: atest cts/tests/tests/security/src/android/security/cts/ActivityManagerTest.java#testActivityManager_checkAppInForegroundCall
Change-Id: I9602c89b2d40036e525c38960a08326dc74c6682
parent abc7143e

services/core/java/com/android/server/am/ActivityManagerService.java

+8 −0
Original line number Diff line number Diff line
@@ -5137,6 +5137,14 @@ public class ActivityManagerService extends IActivityManager.Stub 














    @Override















    public boolean isAppForeground(int uid) {













        int callerUid = Binder.getCallingUid();













        if (UserHandle.isCore(callerUid) || callerUid == uid) {













            return isAppForegroundInternal(uid);













        }













        return false;













    }

























    private boolean isAppForegroundInternal(int uid) {















        synchronized (this) {















            UidRecord uidRec = mActiveUids.get(uid);















            if (uidRec == null || uidRec.idle) {