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path: root/drivers/media/usb/gspca/topro.c
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Diffstat (limited to 'drivers/media/usb/gspca/topro.c')
-rw-r--r--drivers/media/usb/gspca/topro.c10
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/media/usb/gspca/topro.c b/drivers/media/usb/gspca/topro.c
index 640c2fe760b3..5fcd1eec2004 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