[edk2-devel] [edk2-platforms Patch 17/28] Vlvt2TbltDevicePkg: Fix NULL pointer access in SmbiosMiscDxe

[Michael D Kinney]

Handle case where no Simple Network Protocols are found.

Cc: Zailiang Sun <zailiang.sun at intel.com>
Cc: Yi Qian <yi.qian at intel.com>
Cc: Gary Lin <glin at suse.com>
Signed-off-by: Michael D Kinney <michael.d.kinney at intel.com>
---
 .../MiscBaseBoardManufacturerFunction.c            | 14 +++++++++-----
 .../SmBiosMiscDxe/MiscSystemManufacturerFunction.c | 14 +++++++++-----
 2 files changed, 18 insertions(+), 10 deletions(-)

diff --git a/Platform/Intel/Vlv2TbltDevicePkg/SmBiosMiscDxe/MiscBaseBoardManufacturerFunction.c b/Platform/Intel/Vlv2TbltDevicePkg/SmBiosMiscDxe/MiscBaseBoardManufacturerFunction.c
index 4e02486853..8eddc5c2a6 100644
--- a/Platform/Intel/Vlv2TbltDevicePkg/SmBiosMiscDxe/MiscBaseBoardManufacturerFunction.c
+++ b/Platform/Intel/Vlv2TbltDevicePkg/SmBiosMiscDxe/MiscBaseBoardManufacturerFunction.c
@@ -130,11 +130,15 @@ MISC_SMBIOS_TABLE_FUNCTION(MiscBaseBoardManufacturer)
   //
   //Get the MAC string
   //
-  Status = NetLibGetMacString (
-             *Handles,
-             NULL,
-             &MacStr
-             );
+  if (Handles == NULL) {
+    Status = EFI_NOT_FOUND;
+  } else {
+    Status = NetLibGetMacString (
+               *Handles,
+               NULL,
+               &MacStr
+               );
+  }
   if (EFI_ERROR (Status)) {	
     MacStr = L"000000000000";
   }
diff --git a/Platform/Intel/Vlv2TbltDevicePkg/SmBiosMiscDxe/MiscSystemManufacturerFunction.c b/Platform/Intel/Vlv2TbltDevicePkg/SmBiosMiscDxe/MiscSystemManufacturerFunction.c
index da660cb3a8..b18dbd6ae2 100644
--- a/Platform/Intel/Vlv2TbltDevicePkg/SmBiosMiscDxe/MiscSystemManufacturerFunction.c
+++ b/Platform/Intel/Vlv2TbltDevicePkg/SmBiosMiscDxe/MiscSystemManufacturerFunction.c
@@ -212,11 +212,15 @@ AddSmbiosManuCallback (
   //
   //Get the MAC string
   //
-  Status = NetLibGetMacString (
-             *Handles,
-             NULL,
-             &MacStr
-             );
+  if (Handles == NULL) {
+    Status = EFI_NOT_FOUND;
+  } else {
+    Status = NetLibGetMacString (
+               *Handles,
+               NULL,
+               &MacStr
+               );
+  }
   if (EFI_ERROR (Status)) {
     MacStr = L"000000000000";
   }
-- 
2.21.0.windows.1


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