MdePkg UefiDevicePathLib: Fix possible memory read/write cross boundary

[mirror_edk2.git] / MdePkg / Library / UefiDevicePathLib / DevicePathToText.c

diff --git a/MdePkg/Library/UefiDevicePathLib/DevicePathToText.c b/MdePkg/Library/UefiDevicePathLib/DevicePathToText.c
index 0774fd8c17a4b24d3c3ce1d7099d2250058925c0..363830bd32caf96e76ab1df9e090008fc50a4b82 100644 (file)
--- a/MdePkg/Library/UefiDevicePathLib/DevicePathToText.c
+++ b/MdePkg/Library/UefiDevicePathLib/DevicePathToText.c
@@ -1616,9 +1616,14 @@ DevPathToTextWiFi (
   )\r
 {\r
   WIFI_DEVICE_PATH      *WiFi;\r
+  UINT8                 SSId[33];\r
 \r
   WiFi = DevPath;\r
-  UefiDevicePathLibCatPrint (Str, L"Wi-Fi(%a)", WiFi->SSId);\r
+\r
+  SSId[32] = '\0';\r
+  CopyMem (SSId, WiFi->SSId, 32);\r
+\r
+  UefiDevicePathLibCatPrint (Str, L"Wi-Fi(%a)", SSId);\r
 }\r
 \r
 /**\r