diff --git a/media/libmedia/IOMX.cpp b/media/libmedia/IOMX.cpp
index 16da65e..5423c2a 100644
--- a/media/libmedia/IOMX.cpp
+++ b/media/libmedia/IOMX.cpp
@@ -963,6 +963,12 @@
 
             node_id node = (node_id)data.readInt32();
             OMX_U32 port_index = data.readInt32();
+            if (!isSecure(node) || port_index != 0 /* kPortIndexInput */) {
+                ALOGE("b/24310423");
+                reply->writeInt32(INVALID_OPERATION);
+                return NO_ERROR;
+            }
+
             size_t size = data.readInt64();
 
             buffer_id buffer;