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| author | Ceping Sun <cepingx.sun@intel.com> | 2025-07-01 02:01:50 -0400 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2025-07-02 07:41:33 +0000 |
| commit | 7c40bc06a9d3da504c7046303c767d38fda3a1fe (patch) | |
| tree | 1aeb706d71b31774dc1677ce70939823ae32f98a | |
| parent | d49364779c53f0aba2fd445345c8999d548f6a90 (diff) | |
| download | edk2-7c40bc06a9d3da504c7046303c767d38fda3a1fe.zip edk2-7c40bc06a9d3da504c7046303c767d38fda3a1fe.tar.gz edk2-7c40bc06a9d3da504c7046303c767d38fda3a1fe.tar.bz2 | |
SecurityPkg/SecTpmMeasurementLib: Fix OverFlow Coverity issue
CC_MR_INDEX_0_MRTD indicates the MRTD register. This register is NOT
extendable in TDVF. So the return value of TdxMeasurementMapPcrToMrIndex
must be checked.
Cc: Jiewen Yao <jiewen.yao@intel.com>
Signed-off-by: Ceping Sun <cepingx.sun@intel.com>
| -rw-r--r-- | SecurityPkg/Library/SecTpmMeasurementLib/IntelTdx.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/SecurityPkg/Library/SecTpmMeasurementLib/IntelTdx.c b/SecurityPkg/Library/SecTpmMeasurementLib/IntelTdx.c index 95d69ed..08e1915 100644 --- a/SecurityPkg/Library/SecTpmMeasurementLib/IntelTdx.c +++ b/SecurityPkg/Library/SecTpmMeasurementLib/IntelTdx.c @@ -58,7 +58,8 @@ TdxHashLogExtendEvent ( }
MrIndex = TdxMeasurementMapPcrToMrIndex (PcrIndex);
- if (MrIndex == CC_MR_INDEX_INVALID) {
+ // MRTD is NOT extendable in TDVF.
+ if ((MrIndex == CC_MR_INDEX_INVALID) || (MrIndex == CC_MR_INDEX_0_MRTD)) {
return EFI_INVALID_PARAMETER;
}
|