If the target string doesn't appear in the searched string,
StringPtr will be NULL. So add a check for that.
Cc: Dandan Bi <dandan...@intel.com>
Cc: Eric Dong <eric.d...@intel.com>
Signed-off-by: Shenglei Zhang <shenglei.zh...@intel.com>
---
MdeModulePkg/Universal/HiiDatabaseDxe/ConfigRouting.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/MdeModulePkg/Universal/HiiDatabaseDxe/ConfigRouting.c
b/MdeModulePkg/Universal/HiiDatabaseDxe/ConfigRouting.c
index 71ea25bc19bf..f786da8e370a 100644
--- a/MdeModulePkg/Universal/HiiDatabaseDxe/ConfigRouting.c
+++ b/MdeModulePkg/Universal/HiiDatabaseDxe/ConfigRouting.c
@@ -909,6 +909,10 @@ CompareAndMergeDefaultString (
// To find the <AltResp> with AltConfigHdr in AltCfgResp, ignore other
<AltResp> which follow it.
//
StringPtr = StrStr (*AltCfgResp, AltConfigHdr);
+ if (StringPtr == NULL) {
+ Status = EFI_NOT_FOUND;
+ goto Exit;
+ }
StringPtrNext = StrStr (StringPtr + 1, L"&GUID");
if (StringPtrNext != NULL) {
TempCharA = *StringPtrNext;
--
2.18.0.windows.1
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