Silicon/Intel/Tools/FitGen/FitGen.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
When creating FIT table, if a IBB FV (e.g. Security FV) is blow ACM FV
( e.g. Firmware Binaries FV), but the size of IBB FV is smaller than
ACM FV, it will cause overflow issue, unexpected split will happen.
Added a statement checking to avoid this issue.
Cc: Bob Feng <bob.c.feng@intel.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Cc: Yuwei Chen <yuwei.chen@intel.com>
Signed-off-by: Vin Xue <vinxue@outlook.com>
---
Silicon/Intel/Tools/FitGen/FitGen.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/Silicon/Intel/Tools/FitGen/FitGen.c b/Silicon/Intel/Tools/FitGen/FitGen.c
index 290e688f6e..3cb8516757 100644
--- a/Silicon/Intel/Tools/FitGen/FitGen.c
+++ b/Silicon/Intel/Tools/FitGen/FitGen.c
@@ -759,7 +759,7 @@ CheckOverlap (
INTN Index;
for (Index = 0; Index < (INTN)gFitTableContext.BiosModuleNumber; Index ++) {
- if ((gFitTableContext.BiosModule[Index].Address <= Address) &&
+ if ((gFitTableContext.BiosModule[Index].Address <= Address) && (gFitTableContext.BiosModule[Index].Size >= Size) &&
((gFitTableContext.BiosModule[Index].Size - Size) >= (Address - gFitTableContext.BiosModule[Index].Address))) {
UINT32 TempSize;
INT32 SubIndex;
--
2.31.1.windows.1
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Hi Sir, Could you help to review this simple change? It was verified on Client BIOS. Thanks. ________________________________ From: Vin Xue <vinxue@outlook.com> Sent: Monday, January 24, 2022 5:09 PM To: devel@edk2.groups.io <devel@edk2.groups.io> Cc: Bob Feng <bob.c.feng@intel.com>; Liming Gao <gaoliming@byosoft.com.cn>; Yuwei Chen <yuwei.chen@intel.com> Subject: [edk2-platform PATCH] Intel/FitGen: Fixed overflow issue when overlap checking When creating FIT table, if a IBB FV (e.g. Security FV) is blow ACM FV ( e.g. Firmware Binaries FV), but the size of IBB FV is smaller than ACM FV, it will cause overflow issue, unexpected split will happen. Added a statement checking to avoid this issue. Cc: Bob Feng <bob.c.feng@intel.com> Cc: Liming Gao <gaoliming@byosoft.com.cn> Cc: Yuwei Chen <yuwei.chen@intel.com> Signed-off-by: Vin Xue <vinxue@outlook.com> --- Silicon/Intel/Tools/FitGen/FitGen.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Silicon/Intel/Tools/FitGen/FitGen.c b/Silicon/Intel/Tools/FitGen/FitGen.c index 290e688f6e..3cb8516757 100644 --- a/Silicon/Intel/Tools/FitGen/FitGen.c +++ b/Silicon/Intel/Tools/FitGen/FitGen.c @@ -759,7 +759,7 @@ CheckOverlap ( INTN Index; for (Index = 0; Index < (INTN)gFitTableContext.BiosModuleNumber; Index ++) { - if ((gFitTableContext.BiosModule[Index].Address <= Address) && + if ((gFitTableContext.BiosModule[Index].Address <= Address) && (gFitTableContext.BiosModule[Index].Size >= Size) && ((gFitTableContext.BiosModule[Index].Size - Size) >= (Address - gFitTableContext.BiosModule[Index].Address))) { UINT32 TempSize; INT32 SubIndex; -- 2.31.1.windows.1 -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#86864): https://edk2.groups.io/g/devel/message/86864 Mute This Topic: https://groups.io/mt/88658814/1787277 Group Owner: devel+owner@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [importer@patchew.org] -=-=-=-=-=-=-=-=-=-=-=-
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