diff options
Diffstat (limited to 'drivers/media/usb/gspca/topro.c')
| -rw-r--r-- | drivers/media/usb/gspca/topro.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/media/usb/gspca/topro.c b/drivers/media/usb/gspca/topro.c index 640c2fe760b..5fcd1eec200 100644 --- a/drivers/media/usb/gspca/topro.c +++ b/drivers/media/usb/gspca/topro.c @@ -4631,8 +4631,16 @@ static void sd_pkt_scan(struct gspca_dev *gspca_dev, } data++; len--; + if (len < 2) { + gspca_dev->last_packet_type = DISCARD_PACKET; + return; + } if (*data == 0xff && data[1] == 0xd8) { /*fixme: there may be information in the 4 high bits*/ + if (len < 7) { + gspca_dev->last_packet_type = DISCARD_PACKET; + return; + } if ((data[6] & 0x0f) != sd->quality) set_dqt(gspca_dev, data[6] & 0x0f); gspca_frame_add(gspca_dev, FIRST_PACKET, @@ -4672,7 +4680,7 @@ static void sd_pkt_scan(struct gspca_dev *gspca_dev, gspca_dev->last_packet_type = DISCARD_PACKET; break; case 0xcc: - if (data[1] != 0xff || data[2] != 0xd8) + if (len >= 3 && (data[1] != 0xff || data[2] != 0xd8)) gspca_frame_add(gspca_dev, INTER_PACKET, data + 1, len - 1); else |