From 93ad4a933ef3f6ea5502ac0d5fc707acdc76f04b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=8D=A2=E5=AE=87=E8=B1=AA?= <luyuhao6@huawei.com>
Date: Sun, 31 Aug 2025 16:43:23 +0800
Subject: [PATCH] change1
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Signed-off-by: 卢宇豪 <luyuhao6@huawei.com>
---
 .../session_manager/src/zidl/scene_session_manager_proxy.cpp  | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/window_scene/session_manager/src/zidl/scene_session_manager_proxy.cpp b/window_scene/session_manager/src/zidl/scene_session_manager_proxy.cpp
index 6c750ea09f..d284253dd4 100644
--- a/window_scene/session_manager/src/zidl/scene_session_manager_proxy.cpp
+++ b/window_scene/session_manager/src/zidl/scene_session_manager_proxy.cpp
@@ -3274,6 +3274,10 @@ WMError SceneSessionManagerProxy::GetDisplayIdByWindowId(const std::vector<uint6
         TLOGE(WmsLogTag::WMS_ATTRIBUTE, "Fail to read mapSize");
         return WMError::WM_ERROR_IPC_FAILED;
     }
+    if (mapSize < 0) {
+        TLOGE(WmsLogTag::WMS_ATTRIBUTE, "MapSize is invalid");
+        return WMError::WM_ERROR_IPC_FAILED;
+    }
     for (int32_t i = 0; i < mapSize; i++) {
         uint64_t windowId;
         if (!reply.ReadUint64(windowId)) {
-- 
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