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| author | Bret Barkelew <bret@corthon.com> | 2021-04-10 02:25:11 +0800 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2021-04-13 01:24:13 +0000 |
| commit | f8e6bcb6e7c350eb7be887dfdb5aad43cd6373af (patch) | |
| tree | 80a3c368b3884183e41e02f92e7ac4ec3ee4312a | |
| parent | 4b59b22fed05eea1cb92ad90b86759d4bfbc4870 (diff) | |
| download | edk2-f8e6bcb6e7c350eb7be887dfdb5aad43cd6373af.tar.gz | |
MdeModulePkg: Initialize temp variable in VarCheckPolicyLib
DumpVariablePolicy() will return EFI_INVALID_PARAMETER if the Buffer
pointer is NULL and the indirect Size is anything but 0. Since this
TempSize was not being initialized it is very likely that this sequence
would not return the total buffer size as expected.
Bugzilla: https://bugzilla.tianocore.org/show_bug.cgi?id=3310
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Hao A Wu <hao.a.wu@intel.com>
Signed-off-by: Bret Barkelew <bret.barkelew@microsoft.com>
Reviewed-by: Hao A Wu <hao.a.wu@intel.com>
Reviewed-by: Liming Gao <gaoliming@byosoft.com.cn>
| -rw-r--r-- | MdeModulePkg/Library/VarCheckPolicyLib/VarCheckPolicyLib.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/MdeModulePkg/Library/VarCheckPolicyLib/VarCheckPolicyLib.c b/MdeModulePkg/Library/VarCheckPolicyLib/VarCheckPolicyLib.c index 14e1904e96..e50edb4ffc 100644 --- a/MdeModulePkg/Library/VarCheckPolicyLib/VarCheckPolicyLib.c +++ b/MdeModulePkg/Library/VarCheckPolicyLib/VarCheckPolicyLib.c @@ -216,6 +216,7 @@ VarCheckPolicyLibMmiHandler ( DumpParamsOut->TotalSize = 0;
DumpParamsOut->PageSize = 0;
DumpParamsOut->HasMore = FALSE;
+ TempSize = 0;
SubCommandStatus = DumpVariablePolicy (NULL, &TempSize);
if (SubCommandStatus == EFI_BUFFER_TOO_SMALL && TempSize > 0) {
mCurrentPaginationCommand = VAR_CHECK_POLICY_COMMAND_DUMP;
|