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Commit d67dc3a4 authored by Andrii Vladyka's avatar Andrii Vladyka Committed by Greg Kroah-Hartman
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staging: gdm724x: check for skb->len in gdm_lte_emulate_arp 



check for skb->len in gdm_lte_emulate_arp in gdm724x driver

Signed-off-by: default avatarAndrii Vladyka <tulup@mail.ru>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 3de1abef

drivers/staging/gdm724x/gdm_lte.c

+5 −0
Original line number Diff line number Diff line
@@ -26,6 +26,7 @@ 
#include <linux/icmp.h>

#include <linux/icmpv6.h>

#include <linux/uaccess.h>

#include <linux/errno.h>

#include <net/ndisc.h>



#include "gdm_lte.h"
@@ -118,6 +119,10 @@ static int gdm_lte_emulate_arp(struct sk_buff *skb_in, u32 nic_type) 
	void *mac_header_data;

	u32 mac_header_len;



	/* Check for skb->len, discard if empty */

	if (skb_in->len == 0)

		return -ENODATA;



	/* Format the mac header so that it can be put to skb */

	if (ntohs(((struct ethhdr *)skb_in->data)->h_proto) == ETH_P_8021Q) {

		memcpy(&vlan_eth, skb_in->data, sizeof(struct vlan_ethhdr));