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MdeModulePkg: Fix potential buffer overflow issues.

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Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Eric Dong <eric.dong@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@17472 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Eric Dong 2015-05-19 09:26:25 +00:00 committed by ydong10
parent 5f25ead991
commit aee257db53
3 changed files with 7 additions and 3 deletions
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3
MdeModulePkg/Universal/DisplayEngineDxe/FormDisplay.h
View File

@ -113,8 +113,9 @@ extern BOOLEAN gMisMatch;
//
// It take 23 characters including the NULL to print a 64 bits number with "[" and "]".
// pow(2, 64) = [18446744073709551616]
// with extra '-' flat, set the width to 24.
//
#define MAX_NUMERIC_INPUT_WIDTH 23
#define MAX_NUMERIC_INPUT_WIDTH 24
#define EFI_HII_EXPRESSION_INCONSISTENT_IF 0
#define EFI_HII_EXPRESSION_NO_SUBMIT_IF 1

5
MdeModulePkg/Universal/SetupBrowserDxe/Expression.c
View File

@ -1561,12 +1561,15 @@ IfrMatch2 (
&BufferSize,
HandleBuffer);
} else if (EFI_ERROR (Status)) {
}
if (EFI_ERROR (Status)) {
Result->Type = EFI_IFR_TYPE_UNDEFINED;
Status = EFI_SUCCESS;
goto Done;
}
ASSERT (HandleBuffer != NULL);
for ( Index = 0; Index < BufferSize / sizeof(EFI_HANDLE); Index ++) {
Status = gBS->HandleProtocol (
HandleBuffer[Index],

2
MdeModulePkg/Universal/SetupBrowserDxe/IfrParse.c
View File

@ -2144,6 +2144,7 @@ ParseOpCodes (
// Option
//
case EFI_IFR_ONE_OF_OPTION_OP:
ASSERT (ParentStatement != NULL);
if (ParentStatement->Operand == EFI_IFR_ORDERED_LIST_OP && ((((EFI_IFR_ONE_OF_OPTION *) OpCodeData)->Flags & (EFI_IFR_OPTION_DEFAULT | EFI_IFR_OPTION_DEFAULT_MFG)) != 0)) {
//
// It's keep the default value for ordered list opcode.
@ -2198,7 +2199,6 @@ ParseOpCodes (
CopyMem (CurrentOption->SuppressExpression->Expression, GetConditionalExpressionList(ExpressOption), (UINTN) (sizeof (FORM_EXPRESSION *) * ConditionalExprCount));
}
ASSERT (ParentStatement != NULL);
//
// Insert to Option list of current Question
//