36 lines
1.1 KiB
Diff
36 lines
1.1 KiB
Diff
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From cb0ffbcd86756a47696b6e24e19552d2bcc4238a Mon Sep 17 00:00:00 2001
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From: Gerd Hoffmann <kraxel@redhat.com>
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Date: Wed, 26 Apr 2023 14:37:13 +0200
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Subject: [PATCH 14/16] SecurityPkg: add TIS sanity check (tpm2)
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The code blindly assumes a TIS interface is present in case both CRB and
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FIFO checks fail. Check the InterfaceType for TIS instead and only
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return Tpm2PtpInterfaceTis in case it matches, Tpm2PtpInterfaceMax
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otherwise.
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Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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---
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SecurityPkg/Library/Tpm2DeviceLibDTpm/Tpm2Ptp.c | 6 +++++-
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1 file changed, 5 insertions(+), 1 deletion(-)
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diff --git a/SecurityPkg/Library/Tpm2DeviceLibDTpm/Tpm2Ptp.c b/SecurityPkg/Library/Tpm2DeviceLibDTpm/Tpm2Ptp.c
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index 1f9ac5ab5a30..eac9f0e29941 100644
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--- a/SecurityPkg/Library/Tpm2DeviceLibDTpm/Tpm2Ptp.c
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+++ b/SecurityPkg/Library/Tpm2DeviceLibDTpm/Tpm2Ptp.c
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@@ -464,7 +464,11 @@ Tpm2GetPtpInterface (
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return Tpm2PtpInterfaceFifo;
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}
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- return Tpm2PtpInterfaceTis;
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+ if (InterfaceId.Bits.InterfaceType == PTP_INTERFACE_IDENTIFIER_INTERFACE_TYPE_TIS) {
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+ return Tpm2PtpInterfaceTis;
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+ }
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+
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+ return Tpm2PtpInterfaceMax;
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}
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/**
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--
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2.40.0
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