diff options
Diffstat (limited to 'drivers/hid')
| -rw-r--r-- | drivers/hid/hid-logitech-hidpp.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/hid/hid-logitech-hidpp.c b/drivers/hid/hid-logitech-hidpp.c index 2f420c0b6609..dd3c21b52de3 100644 --- a/drivers/hid/hid-logitech-hidpp.c +++ b/drivers/hid/hid-logitech-hidpp.c @@ -794,6 +794,11 @@ static int wtp_raw_event(struct hid_device *hdev, u8 *data, int size) switch (data[0]) { case 0x02: + if (size < 2) { + hid_err(hdev, "Received HID report of bad size (%d)", + size); + return 1; + } if (hidpp->quirks & HIDPP_QUIRK_WTP_PHYSICAL_BUTTONS) { input_event(wd->input, EV_KEY, BTN_LEFT, !!(data[1] & 0x01)); @@ -806,6 +811,7 @@ static int wtp_raw_event(struct hid_device *hdev, u8 *data, int size) return wtp_mouse_raw_xy_event(hidpp, &data[7]); } case REPORT_ID_HIDPP_LONG: + /* size is already checked in hidpp_raw_event. */ if ((report->fap.feature_index != wd->mt_feature_index) || (report->fap.funcindex_clientid != EVENT_TOUCHPAD_RAW_XY)) return 1; |