The packet format includes a 3 byte headers and a 4 byte CRC. Account for
that when checking the given length is not larger than the skb length.
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@xxxxxxxxxxxxx>
Fixes: e9da0b56fe27 ("sr9700: sanity check for packet length")
---
drivers/net/usb/sr9700.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/usb/sr9700.c b/drivers/net/usb/sr9700.c
index 5a53e63d33a6..09bb40ac6e09 100644
--- a/drivers/net/usb/sr9700.c
+++ b/drivers/net/usb/sr9700.c
@@ -413,7 +413,7 @@ static int sr9700_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
/* ignore the CRC length */
len = (skb->data[1] | (skb->data[2] << 8)) - 4;
- if (len > ETH_FRAME_LEN || len > skb->len)
+ if (len > ETH_FRAME_LEN || len + SR_RX_OVERHEAD > skb->len)
return 0;
/* the last packet of current skb */
--
2.34.1
