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MdeModulePkg/SetupBrowser: Clean the BufferValue for string before use

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When copy new string content to BufferValue, need to clean the
BufferValue firstly, or the BufferValue may contain some
content that doesn't belong to the new string.

Cc: Liming Gao <liming.gao@intel.com>
Cc: Eric Dong <eric.dong@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Dandan Bi <dandan.bi@intel.com>
Reviewed-by: Eric Dong <eric.dong@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
This commit is contained in:
Dandan Bi
2016-05-10 18:51:44 +08:00
committed by Star Zeng
parent fa209e8c20
commit 05b2f9c94e
2 changed files with 5 additions and 1 deletions
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2
MdeModulePkg/Universal/SetupBrowserDxe/Setup.c
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@ -4100,6 +4100,7 @@ GetQuestionDefault (
ASSERT (StrLen (NewString) * sizeof (CHAR16) <= Question->StorageWidth);
if (StrLen (NewString) * sizeof (CHAR16) <= Question->StorageWidth) {
ZeroMem (Question->BufferValue, Question->StorageWidth);
CopyMem (Question->BufferValue, NewString, StrSize (NewString));
} else {
CopyMem (Question->BufferValue, NewString, Question->StorageWidth);
@ -4170,6 +4171,7 @@ GetQuestionDefault (
return EFI_NOT_FOUND;
}
if (Question->StorageWidth > StrSize (StrValue)) {
ZeroMem (Question->BufferValue, Question->StorageWidth);
CopyMem (Question->BufferValue, StrValue, StrSize (StrValue));
} else {
CopyMem (Question->BufferValue, StrValue, Question->StorageWidth);