From 45720abe43b63a4270e210f2e67a7c4dc176273d Mon Sep 17 00:00:00 2001
From: zodf0055980 <zodf0055980@gmail.com>
Date: Wed, 21 Aug 2024 15:18:08 +0800
Subject: [PATCH] SecurityPkg: Fix exponent unmarshaled as 16 bits

According issue #5536, exponent is 32 bits but is unmarshaled as 16 bits.

Signed-off-by: zodf0055980 <zodf0055980@gmail.com>
---
 SecurityPkg/Library/Tpm2CommandLib/Tpm2Object.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/SecurityPkg/Library/Tpm2CommandLib/Tpm2Object.c b/SecurityPkg/Library/Tpm2CommandLib/Tpm2Object.c
index 335957d6cedc..888979e96923 100644
--- a/SecurityPkg/Library/Tpm2CommandLib/Tpm2Object.c
+++ b/SecurityPkg/Library/Tpm2CommandLib/Tpm2Object.c
@@ -252,7 +252,7 @@ Tpm2ReadPublic (
 
       OutPublic->publicArea.parameters.rsaDetail.keyBits  = SwapBytes16 (ReadUnaligned16 ((UINT16 *)Buffer));
       Buffer                                             += sizeof (UINT16);
-      OutPublic->publicArea.parameters.rsaDetail.exponent = SwapBytes16 (ReadUnaligned16 ((UINT16 *)Buffer));
+      OutPublic->publicArea.parameters.rsaDetail.exponent = SwapBytes32 (ReadUnaligned32 ((UINT32 *)Buffer));
       Buffer                                             += sizeof (UINT32);
       break;
     case TPM_ALG_ECC: