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ipv6: pointer math error in ip6_tnl_parse_tlv_enc_lim() 

commit 63117f09c768be05a0bf465911297dc76394f686 upstream.

Casting is a high precedence operation but "off" and "i" are in terms of
bytes so we need to have some parenthesis here.

Fixes: fbfa743a9d2a ("ipv6: fix ip6_tnl_parse_tlv_enc_lim()")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Willy Tarreau <w@1wt.eu>
This commit is contained in:
Dan Carpenter 2017-02-01 11:46:32 +03:00 committed by syphyr
parent e4b379d3ff
commit d20def7a6a
1 changed files with 1 additions and 1 deletions
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2
net/ipv6/ip6_tunnel.c
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@ -435,7 +435,7 @@ __u16 ip6_tnl_parse_tlv_enc_lim(struct sk_buff *skb, __u8 *raw)
if (i + sizeof(*tel) > optlen)
break;
tel = (struct ipv6_tlv_tnl_enc_lim *) skb->data + off + i;
tel = (struct ipv6_tlv_tnl_enc_lim *)(skb->data + off + i);
/* return index of option if found and valid */
if (tel->type == IPV6_TLV_TNL_ENCAP_LIMIT &&
tel->length == 1)