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[win32k]

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- In FNID_SENDMESSAGECALLBACK use SEH before accesing the user-mode buffer

svn path=/trunk/; revision=49962
This commit is contained in:
Giannis Adamopoulos 2010-12-06 12:07:05 +00:00
parent 3e169e3cb2
commit a38b059ca1
1 changed files with 14 additions and 5 deletions
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19
reactos/subsystems/win32/win32k/ntuser/message.c
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@ -2175,14 +2175,23 @@ NtUserMessageCall( HWND hWnd,
break;
case FNID_SENDMESSAGECALLBACK:
{
PCALL_BACK_INFO CallBackInfo = (PCALL_BACK_INFO)ResultInfo;
CALL_BACK_INFO CallBackInfo;
ULONG_PTR uResult;
if (!CallBackInfo)
break;
_SEH2_TRY
{
ProbeForRead((PVOID)ResultInfo, sizeof(CALL_BACK_INFO), 1);
RtlCopyMemory(&CallBackInfo, (PVOID)ResultInfo, sizeof(CALL_BACK_INFO));
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
Ret = FALSE;
_SEH2_YIELD(break);
}
_SEH2_END;
if (!co_IntSendMessageWithCallBack(hWnd, Msg, wParam, lParam,
CallBackInfo->CallBack, CallBackInfo->Context, &uResult))
CallBackInfo.CallBack, CallBackInfo.Context, &uResult))
{
DPRINT1("Callback failure!\n");
}