return EFI_SUCCESS;\r
}\r
\r
- UsbMouseDevice->StateChanged = TRUE;\r
-\r
//\r
// Check mouse Data\r
// USB HID Specification specifies following data format:\r
// 2 0 to 7 Y displacement\r
// 3 to n 0 to 7 Device specific (optional)\r
//\r
+ if (DataLength < 3) {\r
+ return EFI_DEVICE_ERROR;\r
+ }\r
+\r
+ UsbMouseDevice->StateChanged = TRUE;\r
+\r
UsbMouseDevice->State.LeftButton = (BOOLEAN) ((*(UINT8 *) Data & BIT0) != 0);\r
UsbMouseDevice->State.RightButton = (BOOLEAN) ((*(UINT8 *) Data & BIT1) != 0);\r
UsbMouseDevice->State.RelativeMovementX += *((INT8 *) Data + 1);\r