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| author | Hannes Frederic Sowa <hannes@stressinduktion.org> | 2014-01-20 05:16:39 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-01-21 16:59:19 -0800 |
| commit | 82b276cd2b0bacd58e7c307bf8856925a68c4d14 (patch) | |
| tree | ffc8648efa91f83f81c94ac83447dc5246a835cf /net/ipv6/raw.c | |
| parent | 446fab59333dea91e54688f033dd8d788d0486fb (diff) | |
| download | linux-82b276cd2b0bacd58e7c307bf8856925a68c4d14.tar.gz linux-82b276cd2b0bacd58e7c307bf8856925a68c4d14.tar.bz2 linux-82b276cd2b0bacd58e7c307bf8856925a68c4d14.zip | |
ipv6: protect protocols not handling ipv4 from v4 connection/bind attempts
Some ipv6 protocols cannot handle ipv4 addresses, so we must not allow
connecting and binding to them. sendmsg logic does already check msg->name
for this but must trust already connected sockets which could be set up
for connection to ipv4 address family.
Per-socket flag ipv6only is of no use here, as it is under users control
by setsockopt.
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/raw.c')
| -rw-r--r-- | net/ipv6/raw.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c index b4523117aeae..1f29996e368a 100644 --- a/net/ipv6/raw.c +++ b/net/ipv6/raw.c @@ -250,6 +250,10 @@ static int rawv6_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len) if (addr_len < SIN6_LEN_RFC2133) return -EINVAL; + + if (addr->sin6_family != AF_INET6) + return -EINVAL; + addr_type = ipv6_addr_type(&addr->sin6_addr); /* Raw sockets are IPv6 only */ @@ -1209,7 +1213,7 @@ struct proto rawv6_prot = { .owner = THIS_MODULE, .close = rawv6_close, .destroy = raw6_destroy, - .connect = ip6_datagram_connect, + .connect = ip6_datagram_connect_v6_only, .disconnect = udp_disconnect, .ioctl = rawv6_ioctl, .init = rawv6_init_sk, |