HDMICEC: Out of Bounds Write in sendMessage in HdmiCec.cpp am: a93bdd0578

Original change: https://googleplex-android-review.googlesource.com/c/platform/hardware/interfaces/+/23486967

Change-Id: I5432179a2b5deb6d6d764ddf7da044e6e4010dee
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
diff --git a/tv/cec/1.0/default/HdmiCec.cpp b/tv/cec/1.0/default/HdmiCec.cpp
index 74de785..f05f610 100644
--- a/tv/cec/1.0/default/HdmiCec.cpp
+++ b/tv/cec/1.0/default/HdmiCec.cpp
@@ -307,6 +307,9 @@
 }
 
 Return<SendMessageResult> HdmiCec::sendMessage(const CecMessage& message) {
+    if (message.body.size() > CEC_MESSAGE_BODY_MAX_LENGTH) {
+        return SendMessageResult::FAIL;
+    }
     cec_message_t legacyMessage {
         .initiator = static_cast<cec_logical_address_t>(message.initiator),
         .destination = static_cast<cec_logical_address_t>(message.destination),