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NetworkPkg/HttpDxe: Fix the potential NULL dereference

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Cc: Ye Ting <ting.ye@intel.com>
Cc: Fu Siyuan <siyuan.fu@intel.com>
Cc: Wu Hao A <hao.a.wu@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Wu Jiaxin <jiaxin.wu@intel.com>
Reviewed-by: Ye Ting <ting.ye@intel.com>
This commit is contained in:
Jiaxin Wu
2016-12-23 11:13:21 +08:00
parent 0e5e7996c9
commit 63f1d6a4c0
3 changed files with 63 additions and 27 deletions
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80
NetworkPkg/HttpDxe/HttpsSupport.c
View File

@@ -401,33 +401,37 @@ TlsConfigCertificate (
NULL
);
if (Status == EFI_BUFFER_TOO_SMALL) {
//
// Allocate buffer and read the config variable.
//
CACert = AllocatePool (CACertSize);
if (CACert == NULL) {
return EFI_OUT_OF_RESOURCES;
}
Status = gRT->GetVariable (
EFI_TLS_CA_CERTIFICATE_VARIABLE,
&gEfiTlsCaCertificateGuid,
NULL,
&CACertSize,
CACert
);
if (EFI_ERROR (Status)) {
//
// GetVariable still error or the variable is corrupted.
// Fall back to the default value.
//
FreePool (CACert);
return EFI_NOT_FOUND;
}
if (EFI_ERROR (Status) && Status != EFI_BUFFER_TOO_SMALL) {
return Status;
}
//
// Allocate buffer and read the config variable.
//
CACert = AllocatePool (CACertSize);
if (CACert == NULL) {
return EFI_OUT_OF_RESOURCES;
}
Status = gRT->GetVariable (
EFI_TLS_CA_CERTIFICATE_VARIABLE,
&gEfiTlsCaCertificateGuid,
NULL,
&CACertSize,
CACert
);
if (EFI_ERROR (Status)) {
//
// GetVariable still error or the variable is corrupted.
// Fall back to the default value.
//
FreePool (CACert);
return EFI_NOT_FOUND;
}
ASSERT (CACert != NULL);
//
// Enumerate all data and erasing the target item.
//
@@ -1037,6 +1041,11 @@ TlsConnectSession (
//
PacketOut = NetbufAlloc ((UINT32) BufferOutSize);
DataOut = NetbufAllocSpace (PacketOut, (UINT32) BufferOutSize, NET_BUF_TAIL);
if (DataOut == NULL) {
FreePool (BufferOut);
return EFI_OUT_OF_RESOURCES;
}
CopyMem (DataOut, BufferOut, BufferOutSize);
Status = TlsCommonTransmit (HttpInstance, PacketOut);
@@ -1107,6 +1116,7 @@ TlsConnectSession (
FreePool (BufferIn);
if (EFI_ERROR (Status)) {
FreePool (BufferOut);
return Status;
}
@@ -1116,6 +1126,11 @@ TlsConnectSession (
//
PacketOut = NetbufAlloc ((UINT32) BufferOutSize);
DataOut = NetbufAllocSpace (PacketOut, (UINT32) BufferOutSize, NET_BUF_TAIL);
if (DataOut == NULL) {
FreePool (BufferOut);
return EFI_OUT_OF_RESOURCES;
}
CopyMem (DataOut, BufferOut, BufferOutSize);
Status = TlsCommonTransmit (HttpInstance, PacketOut);
@@ -1267,6 +1282,11 @@ TlsCloseSession (
PacketOut = NetbufAlloc ((UINT32) BufferOutSize);
DataOut = NetbufAllocSpace (PacketOut, (UINT32) BufferOutSize, NET_BUF_TAIL);
if (DataOut == NULL) {
FreePool (BufferOut);
return EFI_OUT_OF_RESOURCES;
}
CopyMem (DataOut, BufferOut, BufferOutSize);
Status = TlsCommonTransmit (HttpInstance, PacketOut);
@@ -1540,6 +1560,11 @@ HttpsReceive (
if (BufferOutSize != 0) {
PacketOut = NetbufAlloc ((UINT32)BufferOutSize);
DataOut = NetbufAllocSpace (PacketOut, (UINT32) BufferOutSize, NET_BUF_TAIL);
if (DataOut == NULL) {
FreePool (BufferOut);
return EFI_OUT_OF_RESOURCES;
}
CopyMem (DataOut, BufferOut, BufferOutSize);
Status = TlsCommonTransmit (HttpInstance, PacketOut);
@@ -1627,6 +1652,11 @@ HttpsReceive (
if (BufferOutSize != 0) {
PacketOut = NetbufAlloc ((UINT32) BufferOutSize);
DataOut = NetbufAllocSpace (PacketOut, (UINT32) BufferOutSize, NET_BUF_TAIL);
if (DataOut == NULL) {
FreePool (BufferOut);
return EFI_OUT_OF_RESOURCES;
}
CopyMem (DataOut, BufferOut, BufferOutSize);
Status = TlsCommonTransmit (HttpInstance, PacketOut);