[tfaber] 74300: [ACPI] - Ensure null termination of the method name passed to AcpiEvaluateObject in Bus_PDO_EvalMethod. Spotted by ReactCoder. CORE-13068 #resolve

Author: tfaber
Date: Fri Apr 14 09:32:47 2017
New Revision: 74300

URL: http://svn.reactos.org/svn/reactos?rev=74300&view=rev
Log:
[ACPI]
- Ensure null termination of the method name passed to AcpiEvaluateObject in
Bus_PDO_EvalMethod. Spotted by ReactCoder.
CORE-13068 #resolve

Modified:
    trunk/reactos/drivers/bus/acpi/eval.c

Modified: trunk/reactos/drivers/bus/acpi/eval.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/bus/acpi/eval.c?re…
==============================================================================
--- trunk/reactos/drivers/bus/acpi/eval.c	[iso-8859-1] (original)
+++ trunk/reactos/drivers/bus/acpi/eval.c	[iso-8859-1] Fri Apr 14 09:32:47 2017
@@ -17,6 +17,7 @@
   PIO_STACK_LOCATION IrpSp = IoGetCurrentIrpStackLocation(Irp);
   ACPI_EVAL_INPUT_BUFFER_SIMPLE_INTEGER *SimpleInt;
   ACPI_EVAL_INPUT_BUFFER_SIMPLE_STRING *SimpleStr;
+  CHAR MethodName[5];
 
   if (IrpSp->Parameters.DeviceIoControl.InputBufferLength < sizeof(ULONG))
       return STATUS_INVALID_PARAMETER;
@@ -67,8 +68,12 @@
         return STATUS_NOT_IMPLEMENTED;
   }
 
+  RtlCopyMemory(MethodName,
+                EvalInputBuff->MethodName,
+                sizeof(EvalInputBuff->MethodName));
+  MethodName[4] = ANSI_NULL;
   Status = AcpiEvaluateObject(DeviceData->AcpiHandle,
-                              (CHAR*)EvalInputBuff->MethodName,
+                              MethodName,
                               &ParamList,
                               &RetBuff);