Fix security vulnerability am: 2ae83f4f62 am: 11ab583834 am: ac2b87ac0f am: 132d0f2ae...

am: 6a5a220b48

Change-Id: I47743cb142bdb4f21202dc51482fc52996f6b7a4

diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index 8db071e..8e7e577 100644 (file)
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -2287,8 +2287,7 @@ void SurfaceFlinger::setTransactionState(
         if (s.client != NULL) {
             sp<IBinder> binder = IInterface::asBinder(s.client);
             if (binder != NULL) {
-                String16 desc(binder->getInterfaceDescriptor());
-                if (desc == ISurfaceComposerClient::descriptor) {
+                if (binder->queryLocalInterface(ISurfaceComposerClient::descriptor) != NULL) {
                     sp<Client> client( static_cast<Client *>(s.client.get()) );
                     transactionFlags |= setClientStateLocked(client, s.state);
                 }