Merge "[VTS 2.3] Add length check before reading blob" into udc-dev am: a9d135cd14

Original change: https://googleplex-android-review.googlesource.com/c/platform/hardware/interfaces/+/23438943

Change-Id: I96e3b386057338fef3255667003f71387bd38a9f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
diff --git a/graphics/composer/2.3/utils/hal/include/composer-hal/2.3/ComposerCommandEngine.h b/graphics/composer/2.3/utils/hal/include/composer-hal/2.3/ComposerCommandEngine.h
index f1d61f8..42996dd 100644
--- a/graphics/composer/2.3/utils/hal/include/composer-hal/2.3/ComposerCommandEngine.h
+++ b/graphics/composer/2.3/utils/hal/include/composer-hal/2.3/ComposerCommandEngine.h
@@ -82,7 +82,7 @@
 
         std::vector<IComposerClient::PerFrameMetadataBlob> metadata;
 
-        for (size_t i = 0; i < numBlobs; i++) {
+        for (size_t i = 0; i < numBlobs && length >= 2; i++) {
             IComposerClient::PerFrameMetadataKey key =
                 static_cast<IComposerClient::PerFrameMetadataKey>(readSigned());
             uint32_t blobSize = read();