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| author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-01-20 14:01:31 -0300 |
|---|---|---|
| committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-01-20 14:01:31 -0300 |
| commit | b4b7ff4b08e691656c9d77c758fc355833128ac0 (patch) | |
| tree | 82fcb00e6b918026dc9f2d1f05ed8eee83874cc0 /drivers/net/ppp/pptp.c | |
| parent | 35acfa0fc609f2a2cd95cef4a6a9c3a5c38f1778 (diff) | |
Linux-libre 4.4-gnupck-4.4-gnu
Diffstat (limited to 'drivers/net/ppp/pptp.c')
| -rw-r--r-- | drivers/net/ppp/pptp.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/drivers/net/ppp/pptp.c b/drivers/net/ppp/pptp.c index 686f37daa..597c53e0a 100644 --- a/drivers/net/ppp/pptp.c +++ b/drivers/net/ppp/pptp.c @@ -169,6 +169,7 @@ static int pptp_xmit(struct ppp_channel *chan, struct sk_buff *skb) { struct sock *sk = (struct sock *) chan->private; struct pppox_sock *po = pppox_sk(sk); + struct net *net = sock_net(sk); struct pptp_opt *opt = &po->proto.pptp; struct pptp_gre_header *hdr; unsigned int header_len = sizeof(*hdr); @@ -187,7 +188,7 @@ static int pptp_xmit(struct ppp_channel *chan, struct sk_buff *skb) if (sk_pppox(po)->sk_state & PPPOX_DEAD) goto tx_error; - rt = ip_route_output_ports(sock_net(sk), &fl4, NULL, + rt = ip_route_output_ports(net, &fl4, NULL, opt->dst_addr.sin_addr.s_addr, opt->src_addr.sin_addr.s_addr, 0, 0, IPPROTO_GRE, @@ -279,10 +280,10 @@ static int pptp_xmit(struct ppp_channel *chan, struct sk_buff *skb) nf_reset(skb); skb->ip_summed = CHECKSUM_NONE; - ip_select_ident(sock_net(sk), skb, NULL); + ip_select_ident(net, skb, NULL); ip_send_check(iph); - ip_local_out(skb); + ip_local_out(net, skb->sk, skb); return 1; tx_error: @@ -418,6 +419,9 @@ static int pptp_bind(struct socket *sock, struct sockaddr *uservaddr, struct pptp_opt *opt = &po->proto.pptp; int error = 0; + if (sockaddr_len < sizeof(struct sockaddr_pppox)) + return -EINVAL; + lock_sock(sk); opt->src_addr = sp->sa_addr.pptp; @@ -439,6 +443,9 @@ static int pptp_connect(struct socket *sock, struct sockaddr *uservaddr, struct flowi4 fl4; int error = 0; + if (sockaddr_len < sizeof(struct sockaddr_pppox)) + return -EINVAL; + if (sp->sa_protocol != PX_PROTO_PPTP) return -EINVAL; |