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[NTOS:KE] Fix stack memory disclosure in KiInitializeUserApc (#2988)

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Nguyen Trung Khanh 2020-07-27 07:39:48 +07:00 committed by GitHub
parent 517e6dc8ab
commit 9d2ecd3a13
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3 changed files with 3 additions and 3 deletions
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2
ntoskrnl/ke/amd64/stubs.c
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@ -207,7 +207,7 @@ KiInitializeUserApc(IN PKEXCEPTION_FRAME ExceptionFrame,
IN PVOID SystemArgument1, IN PVOID SystemArgument1,
IN PVOID SystemArgument2) IN PVOID SystemArgument2)
{ {
CONTEXT Context; CONTEXT Context = { 0 };
ULONG64 AlignedRsp, Stack; ULONG64 AlignedRsp, Stack;
EXCEPTION_RECORD SehExceptRecord; EXCEPTION_RECORD SehExceptRecord;

2
ntoskrnl/ke/arm/usercall.c
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@ -270,7 +270,7 @@ KiInitializeUserApc(IN PKEXCEPTION_FRAME ExceptionFrame,
IN PVOID SystemArgument1, IN PVOID SystemArgument1,
IN PVOID SystemArgument2) IN PVOID SystemArgument2)
{ {
CONTEXT Context; CONTEXT Context = { 0 };
ULONG_PTR Stack; ULONG_PTR Stack;
ULONG ContextLength; ULONG ContextLength;
DPRINT1("User APC: %p %p %p\n", NormalContext, SystemArgument1, SystemArgument2); DPRINT1("User APC: %p %p %p\n", NormalContext, SystemArgument1, SystemArgument2);

2
ntoskrnl/ke/i386/usercall.c
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@ -51,7 +51,7 @@ KiInitializeUserApc(IN PKEXCEPTION_FRAME ExceptionFrame,
IN PVOID SystemArgument1, IN PVOID SystemArgument1,
IN PVOID SystemArgument2) IN PVOID SystemArgument2)
{ {
CONTEXT Context; CONTEXT Context = { 0 };
ULONG_PTR Stack, AlignedEsp; ULONG_PTR Stack, AlignedEsp;
ULONG ContextLength; ULONG ContextLength;
EXCEPTION_RECORD SehExceptRecord; EXCEPTION_RECORD SehExceptRecord;