From: Dan Carpenter Date: Wed, 1 Feb 2017 08:46:32 +0000 (+0300) Subject: ipv6: pointer math error in ip6_tnl_parse_tlv_enc_lim() X-Git-Tag: v4.10-rc7~24^2~1 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=63117f09c768be05a0bf465911297dc76394f686;p=thirdparty%2Fkernel%2Fstable.git ipv6: pointer math error in ip6_tnl_parse_tlv_enc_lim() 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 Acked-by: Eric Dumazet Signed-off-by: David S. Miller --- diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c index ff8ee06491c33..75fac933c209a 100644 --- a/net/ipv6/ip6_tunnel.c +++ b/net/ipv6/ip6_tunnel.c @@ -441,7 +441,7 @@ __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)