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1. Enhance AuthVar driver to avoid process corrupted certificate input.

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Signed-off-by: hhuan13
Reviewed-by: ftian

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12398 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
hhuan13
2011-09-21 05:17:50 +00:00
parent 378175d258
commit 648f98d15b
3 changed files with 48 additions and 18 deletions
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32
SecurityPkg/VariableAuthenticated/RuntimeDxe/VariableSmm.c
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@@ -241,17 +241,18 @@ GetFvbCountAndBuffer (
/**
Get the variable statistics information from the information buffer pointed by gVariableInfo.
@param[in, out] InfoEntry A pointer to the buffer of variable information entry.
On input, point to the variable information returned last time. if
InfoEntry->VendorGuid is zero, return the first information.
On output, point to the next variable information.
@param[in, out] InfoSize On input, the size of the variable information buffer.
On output, the returned variable information size.
@param[in, out] InfoEntry A pointer to the buffer of variable information entry.
On input, point to the variable information returned last time. if
InfoEntry->VendorGuid is zero, return the first information.
On output, point to the next variable information.
@param[in, out] InfoSize On input, the size of the variable information buffer.
On output, the returned variable information size.
@retval EFI_SUCCESS The variable information is found and returned successfully.
@retval EFI_UNSUPPORTED No variable inoformation exists in variable driver. The
PcdVariableCollectStatistics should be set TRUE to support it.
@retval EFI_BUFFER_TOO_SMALL The buffer is too small to hold the next variable information.
@retval EFI_SUCCESS The variable information is found and returned successfully.
@retval EFI_UNSUPPORTED No variable inoformation exists in variable driver. The
PcdVariableCollectStatistics should be set TRUE to support it.
@retval EFI_BUFFER_TOO_SMALL The buffer is too small to hold the next variable information.
@retval EFI_INVALID_PARAMETER Input parameter is invalid.
**/
EFI_STATUS
@@ -265,7 +266,10 @@ SmmVariableGetStatistics (
UINTN StatisticsInfoSize;
CHAR16 *InfoName;
ASSERT (InfoEntry != NULL);
if (InfoEntry == NULL) {
return EFI_INVALID_PARAMETER;
}
VariableInfo = gVariableInfo;
if (VariableInfo == NULL) {
return EFI_UNSUPPORTED;
@@ -348,6 +352,8 @@ SmmVariableGetStatistics (
@retval EFI_WARN_INTERRUPT_SOURCE_PENDING The interrupt is still pending and other handlers should still
be called.
@retval EFI_INTERRUPT_PENDING The interrupt could not be quiesced.
@retval EFI_INVALID_PARAMETER Input parameter is invalid.
**/
EFI_STATUS
EFIAPI
@@ -366,7 +372,9 @@ SmmVariableHandler (
VARIABLE_INFO_ENTRY *VariableInfo;
UINTN InfoSize;
ASSERT (CommBuffer != NULL);
if (CommBuffer == NULL) {
return EFI_INVALID_PARAMETER;
}
SmmVariableFunctionHeader = (SMM_VARIABLE_COMMUNICATE_HEADER *)CommBuffer;
switch (SmmVariableFunctionHeader->Function) {