From 064adebbd0c6e35e6a18d5dda3deba232db2690d Mon Sep 17 00:00:00 2001 From: hathach Date: Fri, 13 Sep 2019 14:03:59 +0700 Subject: [PATCH] fix #152, potential memory issue --- src/device/usbd.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/src/device/usbd.c b/src/device/usbd.c index 53f0226b..184702f1 100644 --- a/src/device/usbd.c +++ b/src/device/usbd.c @@ -435,8 +435,9 @@ static bool process_control_request(uint8_t rhport, tusb_control_request_t const case TUSB_REQ_RCPT_INTERFACE: { uint8_t const itf = tu_u16_low(p_request->wIndex); - uint8_t const drvid = _usbd_dev.itf2drv[itf]; + TU_VERIFY(itf < TU_ARRAY_SZIE(_usbd_dev.itf2drv)); + uint8_t const drvid = _usbd_dev.itf2drv[itf]; TU_VERIFY(drvid < USBD_CLASS_DRIVER_COUNT); if (p_request->bmRequestType_bit.type == TUSB_REQ_TYPE_STANDARD)