diff --git a/media/libstagefright/NuMediaExtractor.cpp b/media/libstagefright/NuMediaExtractor.cpp
index d736734..28ca9ff 100644
--- a/media/libstagefright/NuMediaExtractor.cpp
+++ b/media/libstagefright/NuMediaExtractor.cpp
@@ -298,6 +298,9 @@
     size_t psshsize;
     if (meta->findData(kKeyPssh, &type, &pssh, &psshsize)) {
         sp<ABuffer> buf = new ABuffer(psshsize);
+        if (buf->data() == nullptr) {
+            return -ENOMEM;
+        }
         memcpy(buf->data(), pssh, psshsize);
         (*format)->setBuffer("pssh", buf);
     }
@@ -308,6 +311,9 @@
     if (meta->findData(kKeySlowMotionMarkers, &type, &slomoMarkers, &slomoMarkersSize)
             && slomoMarkersSize > 0) {
         sp<ABuffer> buf = new ABuffer(slomoMarkersSize);
+        if (buf->data() == nullptr) {
+            return -ENOMEM;
+        }
         memcpy(buf->data(), slomoMarkers, slomoMarkersSize);
         (*format)->setBuffer("slow-motion-markers", buf);
     }
@@ -639,6 +645,7 @@
         numPageSamples = -1;
     }
 
+    // caller has verified there is sufficient space
     // insert, including accounting for the space used.
     memcpy((uint8_t *)buffer->data() + mbuf->range_length(),
            &numPageSamples,