[PATCH 4/7] hidclass.sys: Return error on invalid write buffer size.

[Rémi Bernon]

Signed-off-by: Rémi Bernon 
---
 dlls/hidclass.sys/device.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/dlls/hidclass.sys/device.c b/dlls/hidclass.sys/device.c
index d3f5fa90fc7..5dd4aadb899 100644
--- a/dlls/hidclass.sys/device.c
+++ b/dlls/hidclass.sys/device.c
@@ -703,6 +703,20 @@ NTSTATUS WINAPI pdo_write(DEVICE_OBJECT *device, IRP *irp)
         return STATUS_DELETE_PENDING;
     }

+    if (!irpsp->Parameters.Write.Length)
+    {
+        irp->IoStatus.Status = STATUS_INVALID_USER_BUFFER;
+        IoCompleteRequest( irp, IO_NO_INCREMENT );
+        return irp->IoStatus.Status;
+    }
+
+    if (irpsp->Parameters.Write.Length < data->caps.OutputReportByteLength)
+    {
+        irp->IoStatus.Status = STATUS_INVALID_PARAMETER;
+        IoCompleteRequest( irp, IO_NO_INCREMENT );
+        return irp->IoStatus.Status;
+    }
+
     irp->IoStatus.Information = 0;

TRACE_(hid_report)("Device %p Buffer length %i Buffer %p\n", device, irpsp->Parameters.Write.Length, irp->AssociatedIrp.SystemBuffer);