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[WIN32K]

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Protect access to the result pointer from KeUserModeCallback with SEH. Fixes a possible kernel mode crash.

svn path=/trunk/; revision=48437
This commit is contained in:
Timo Kreuzer
2010-08-03 21:36:39 +00:00
parent f986e82a8d
commit 9c9f4cb9e9
1 changed files with 10 additions and 1 deletions
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reactos/subsystems/win32/win32k/ntuser/callback.c
+10 -1
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@@ -267,7 +267,16 @@ co_IntLoadSysMenuTemplate()
if (NT_SUCCESS(Status))
{
/* Simulate old behaviour: copy into our local buffer */
Result = *(LRESULT*)ResultPointer;
_SEH2_TRY
{
ProbeForRead(ResultPointer, sizeof(LRESULT), 1);
Result = *(LRESULT*)ResultPointer;
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
Result = 0;
}
_SEH2_END
}
UserEnterCo();