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MdeModulePkg/Variable/Pei: Update the condition in if statement 

IndexTable->Length is used as index in array IndexTable->Index[].
So IndexTable->Length needs to be checked, which should be less than
the array size.

Cc: Hao A Wu <hao.a.wu@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Signed-off-by: Shenglei Zhang <shenglei.zhang@intel.com>
Reviewed-by: Hao A Wu <hao.a.wu@intel.com>
This commit is contained in:
Shenglei Zhang 2019-10-15 14:45:44 +08:00 committed by Liming Gao
parent 2b23beb043
commit 121955fd4f
1 changed files with 1 additions and 1 deletions
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2
MdeModulePkg/Universal/Variable/Pei/Variable.c
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@ -896,7 +896,7 @@ FindVariableEx (
//
if ((IndexTable != NULL) && !StopRecord) {
Offset = (UINTN) Variable - (UINTN) LastVariable;
if ((Offset > 0x0FFFF) || (IndexTable->Length == sizeof (IndexTable->Index) / sizeof (IndexTable->Index[0]))) {
if ((Offset > 0x0FFFF) || (IndexTable->Length >= sizeof (IndexTable->Index) / sizeof (IndexTable->Index[0]))) {
//
// Stop to record if the distance of two neighbouring VAR_ADDED variable is larger than the allowable scope(UINT16),
// or the record buffer is full.