diff options
| author | jyao1 <jyao1@6f19259b-4bc3-4df7-8a09-765794883524> | 2012-06-12 08:28:43 +0000 |
|---|---|---|
| committer | jyao1 <jyao1@6f19259b-4bc3-4df7-8a09-765794883524> | 2012-06-12 08:28:43 +0000 |
| commit | dc204d5a0fd64d1ccbc90ebea827e7ad73b71f4d (patch) | |
| tree | 780a18f56c08103c2bd577828a533f9d85556815 /SecurityPkg/Tcg/TcgSmm | |
| parent | 90eaa3c1e022e2b676da65cb41aa66136a18b4ea (diff) | |
| download | edk2-platforms-dc204d5a0fd64d1ccbc90ebea827e7ad73b71f4d.tar.xz | |
Add comment for modules which have external input.
signed-off-by: jiewen.yao@intel.com
reviewed-by: guo.dong@intel.com
reviewed-by: ting.ye@intel.com
reviewed-by: liming.gao@intel.com
reviewed-by: elvin.li@intel.com
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13446 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'SecurityPkg/Tcg/TcgSmm')
| -rw-r--r-- | SecurityPkg/Tcg/TcgSmm/TcgSmm.c | 14 | ||||
| -rw-r--r-- | SecurityPkg/Tcg/TcgSmm/TcgSmm.inf | 4 |
2 files changed, 18 insertions, 0 deletions
diff --git a/SecurityPkg/Tcg/TcgSmm/TcgSmm.c b/SecurityPkg/Tcg/TcgSmm/TcgSmm.c index dd6d89f695..6fa383d46d 100644 --- a/SecurityPkg/Tcg/TcgSmm/TcgSmm.c +++ b/SecurityPkg/Tcg/TcgSmm/TcgSmm.c @@ -2,6 +2,12 @@ It updates TPM items in ACPI table and registers SMI callback
functions for physical presence and ClearMemory.
+ Caution: This module requires additional review when modified.
+ This driver will have external input - variable and ACPINvs data in SMM mode.
+ This external input must be validated carefully to avoid security issue.
+
+ PhysicalPresenceCallback() and MemoryClearCallback() will receive untrusted input and do some check.
+
Copyright (c) 2011 - 2012, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
@@ -21,6 +27,10 @@ TCG_NVS *mTcgNvs; /**
Software SMI callback for TPM physical presence which is called from ACPI method.
+ Caution: This function may receive untrusted input.
+ Variable and ACPINvs are external input, so this function will validate
+ its data structure to be valid value.
+
@param[in] DispatchHandle The unique handle assigned to this handler by SmiHandlerRegister().
@param[in] Context Points to an optional handler context which was specified when the
handler was registered.
@@ -161,6 +171,10 @@ PhysicalPresenceCallback ( /**
Software SMI callback for MemoryClear which is called from ACPI method.
+ Caution: This function may receive untrusted input.
+ Variable and ACPINvs are external input, so this function will validate
+ its data structure to be valid value.
+
@param[in] DispatchHandle The unique handle assigned to this handler by SmiHandlerRegister().
@param[in] Context Points to an optional handler context which was specified when the
handler was registered.
diff --git a/SecurityPkg/Tcg/TcgSmm/TcgSmm.inf b/SecurityPkg/Tcg/TcgSmm/TcgSmm.inf index 9e5751a430..9c023cfa90 100644 --- a/SecurityPkg/Tcg/TcgSmm/TcgSmm.inf +++ b/SecurityPkg/Tcg/TcgSmm/TcgSmm.inf @@ -3,6 +3,10 @@ # registers SMI callback functions for physical presence and
# MemoryClear to handle the requests from ACPI method.
#
+# Caution: This module requires additional review when modified.
+# This driver will have external input - variable and ACPINvs data in SMM mode.
+# This external input must be validated carefully to avoid security issue.
+#
# Copyright (c) 2011 - 2012, Intel Corporation. All rights reserved.<BR>
# This program and the accompanying materials
# are licensed and made available under the terms and conditions of the BSD License
|