diff options
| author | Vlad Yasevich <vladislav.yasevich@hp.com> | 2009-03-24 16:24:48 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-03-24 19:49:09 -0700 |
| commit | 783ed5a78373253052bc61a3c5c8b9f17af4e3c6 (patch) | |
| tree | e927af1d258187767995fc77bda8eebf5a513077 | |
| parent | 4097f663cbe9e58de7ebed222f8af33267f297a8 (diff) | |
ipv6: Disallow binding to v4-mapped address on v6-only socket.
A socket marked v6-only, can not receive or send traffic to v4-mapped
addresses. Thus allowing binding to v4-mapped address on such a
socket makes no sense.
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/ipv6/af_inet6.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c index fbf533cc9dc..7f092fa912b 100644 --- a/net/ipv6/af_inet6.c +++ b/net/ipv6/af_inet6.c @@ -276,6 +276,13 @@ int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len) /* Check if the address belongs to the host. */ if (addr_type == IPV6_ADDR_MAPPED) { + /* Binding to v4-mapped address on a v6-only socket + * makes no sense + */ + if (np->ipv6only) { + err = -EINVAL; + goto out; + } v4addr = addr->sin6_addr.s6_addr32[3]; if (inet_addr_type(net, v4addr) != RTN_LOCAL) { err = -EADDRNOTAVAIL; |