SecurityPkg/Tcg/Tcg2Smm/Tcg2Smm.c | 4 ++++ SecurityPkg/Tcg/TcgSmm/TcgSmm.c | 4 ++++ 2 files changed, 8 insertions(+)
Add more logic to filter invalid function parameter in MOR Control SMI handler
Cc: Long Qin <qin.long@intel.com>
Cc: Yao Jiewen <jiewen.yao@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Chao Zhang <chao.b.zhang@intel.com>
Signed-off-by: Zhang, Chao B <chao.b.zhang@intel.com>
---
SecurityPkg/Tcg/Tcg2Smm/Tcg2Smm.c | 4 ++++
SecurityPkg/Tcg/TcgSmm/TcgSmm.c | 4 ++++
2 files changed, 8 insertions(+)
diff --git a/SecurityPkg/Tcg/Tcg2Smm/Tcg2Smm.c b/SecurityPkg/Tcg/Tcg2Smm/Tcg2Smm.c
index 21b1014a3b..4a1a293bfc 100644
--- a/SecurityPkg/Tcg/Tcg2Smm/Tcg2Smm.c
+++ b/SecurityPkg/Tcg/Tcg2Smm/Tcg2Smm.c
@@ -151,10 +151,14 @@ MemoryClearCallback (
if (MOR_CLEAR_MEMORY_VALUE (MorControl) == 0x0) {
return EFI_SUCCESS;
}
MorControl &= ~MOR_CLEAR_MEMORY_BIT_MASK;
+ } else {
+ mTcgNvs->MemoryClear.ReturnCode = MOR_REQUEST_GENERAL_FAILURE;
+ DEBUG ((EFI_D_ERROR, "[TPM] MOR Parameter error! Parameter = %x\n", mTcgNvs->MemoryClear.Parameter));
+ return EFI_SUCCESS;
}
DataSize = sizeof (UINT8);
Status = mSmmVariable->SmmSetVariable (
MEMORY_OVERWRITE_REQUEST_VARIABLE_NAME,
diff --git a/SecurityPkg/Tcg/TcgSmm/TcgSmm.c b/SecurityPkg/Tcg/TcgSmm/TcgSmm.c
index 0b8a002a4d..d3ddae6886 100644
--- a/SecurityPkg/Tcg/TcgSmm/TcgSmm.c
+++ b/SecurityPkg/Tcg/TcgSmm/TcgSmm.c
@@ -269,10 +269,14 @@ MemoryClearCallback (
if (MOR_CLEAR_MEMORY_VALUE (MorControl) == 0x0) {
return EFI_SUCCESS;
}
MorControl &= ~MOR_CLEAR_MEMORY_BIT_MASK;
+ } else {
+ mTcgNvs->MemoryClear.ReturnCode = MOR_REQUEST_GENERAL_FAILURE;
+ DEBUG ((EFI_D_ERROR, "[TPM] MOR Parameter error! Parameter = %x\n", mTcgNvs->MemoryClear.Parameter));
+ return EFI_SUCCESS;
}
DataSize = sizeof (UINT8);
Status = mSmmVariable->SmmSetVariable (
MEMORY_OVERWRITE_REQUEST_VARIABLE_NAME,
--
2.16.2.windows.1
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Reviewed-by: Long Qin <qin.long@intel.com> Best Regards & Thanks, LONG, Qin > -----Original Message----- > From: Zhang, Chao B > Sent: Thursday, July 19, 2018 6:00 PM > To: edk2-devel@lists.01.org > Cc: Long, Qin <qin.long@intel.com>; Yao, Jiewen <jiewen.yao@intel.com>; > Zhang, Chao B <chao.b.zhang@intel.com> > Subject: [Patch] SecurityPkg: TcgSmm: Handle invalid parameter in MOR SMI > handler > > Add more logic to filter invalid function parameter in MOR Control SMI handler > > Cc: Long Qin <qin.long@intel.com> > Cc: Yao Jiewen <jiewen.yao@intel.com> > Contributed-under: TianoCore Contribution Agreement 1.1 > Signed-off-by: Chao Zhang <chao.b.zhang@intel.com> > Signed-off-by: Zhang, Chao B <chao.b.zhang@intel.com> > --- > SecurityPkg/Tcg/Tcg2Smm/Tcg2Smm.c | 4 ++++ > SecurityPkg/Tcg/TcgSmm/TcgSmm.c | 4 ++++ > 2 files changed, 8 insertions(+) > > diff --git a/SecurityPkg/Tcg/Tcg2Smm/Tcg2Smm.c > b/SecurityPkg/Tcg/Tcg2Smm/Tcg2Smm.c > index 21b1014a3b..4a1a293bfc 100644 > --- a/SecurityPkg/Tcg/Tcg2Smm/Tcg2Smm.c > +++ b/SecurityPkg/Tcg/Tcg2Smm/Tcg2Smm.c > @@ -151,10 +151,14 @@ MemoryClearCallback ( > > if (MOR_CLEAR_MEMORY_VALUE (MorControl) == 0x0) { > return EFI_SUCCESS; > } > MorControl &= ~MOR_CLEAR_MEMORY_BIT_MASK; > + } else { > + mTcgNvs->MemoryClear.ReturnCode = MOR_REQUEST_GENERAL_FAILURE; > + DEBUG ((EFI_D_ERROR, "[TPM] MOR Parameter error! Parameter = %x\n", > mTcgNvs->MemoryClear.Parameter)); > + return EFI_SUCCESS; > } > > DataSize = sizeof (UINT8); > Status = mSmmVariable->SmmSetVariable ( > MEMORY_OVERWRITE_REQUEST_VARIABLE_NAME, > diff --git a/SecurityPkg/Tcg/TcgSmm/TcgSmm.c > b/SecurityPkg/Tcg/TcgSmm/TcgSmm.c index 0b8a002a4d..d3ddae6886 100644 > --- a/SecurityPkg/Tcg/TcgSmm/TcgSmm.c > +++ b/SecurityPkg/Tcg/TcgSmm/TcgSmm.c > @@ -269,10 +269,14 @@ MemoryClearCallback ( > > if (MOR_CLEAR_MEMORY_VALUE (MorControl) == 0x0) { > return EFI_SUCCESS; > } > MorControl &= ~MOR_CLEAR_MEMORY_BIT_MASK; > + } else { > + mTcgNvs->MemoryClear.ReturnCode = MOR_REQUEST_GENERAL_FAILURE; > + DEBUG ((EFI_D_ERROR, "[TPM] MOR Parameter error! Parameter = %x\n", > mTcgNvs->MemoryClear.Parameter)); > + return EFI_SUCCESS; > } > > DataSize = sizeof (UINT8); > Status = mSmmVariable->SmmSetVariable ( > MEMORY_OVERWRITE_REQUEST_VARIABLE_NAME, > -- > 2.16.2.windows.1 _______________________________________________ edk2-devel mailing list edk2-devel@lists.01.org https://lists.01.org/mailman/listinfo/edk2-devel
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