diff options
Diffstat (limited to 'net/ipv6/ip6_output.c')
| -rw-r--r-- | net/ipv6/ip6_output.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c index 2c0df09e9036..7cebee58e55b 100644 --- a/net/ipv6/ip6_output.c +++ b/net/ipv6/ip6_output.c @@ -1021,6 +1021,11 @@ static int ip6_dst_lookup_tail(struct net *net, const struct sock *sk, } } #endif + if (ipv6_addr_v4mapped(&fl6->saddr) && + !(ipv6_addr_v4mapped(&fl6->daddr) || ipv6_addr_any(&fl6->daddr))) { + err = -EAFNOSUPPORT; + goto out_err_release; + } return 0; @@ -1344,7 +1349,7 @@ emsgsize: */ if (transhdrlen && sk->sk_protocol == IPPROTO_UDP && headersize == sizeof(struct ipv6hdr) && - length < mtu - headersize && + length <= mtu - headersize && !(flags & MSG_MORE) && rt->dst.dev->features & (NETIF_F_IPV6_CSUM | NETIF_F_HW_CSUM)) csummode = CHECKSUM_PARTIAL; |