From 6d9f0e7eecbdbe020dd06610d2e0fe776fcf4338 Mon Sep 17 00:00:00 2001
From: jji4 <jji4@6f19259b-4bc3-4df7-8a09-765794883524>
Date: Thu, 15 Jan 2009 03:31:55 +0000
Subject: [PATCH] Source level security checked

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@7282 6f19259b-4bc3-4df7-8a09-765794883524
---
 MdeModulePkg/Universal/EbcDxe/EbcExecute.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/MdeModulePkg/Universal/EbcDxe/EbcExecute.c b/MdeModulePkg/Universal/EbcDxe/EbcExecute.c
index a6d0486632..4f47e206e7 100644
--- a/MdeModulePkg/Universal/EbcDxe/EbcExecute.c
+++ b/MdeModulePkg/Universal/EbcDxe/EbcExecute.c
@@ -1370,6 +1370,11 @@ EbcExecuteInstructions (
   UINTN       InstructionsLeft;
   UINTN       SavedInstructionCount;
 
+  if ((*VmPtr->Ip & 0x3F) >= sizeof(mVmOpcodeTable)) {
+    EbcDebugSignalException (EXCEPT_EBC_INVALID_OPCODE, EXCEPTION_FLAG_FATAL, VmPtr);
+    return EFI_UNSUPPORTED;
+  }
+
   Status = EFI_SUCCESS;
 
   if (*InstructionCount == 0) {
-- 
2.39.2