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authorVlad Yasevich <vladislav.yasevich@hp.com>2007-05-04 13:34:09 -0700
committerDavid S. Miller <davem@davemloft.net>2007-05-04 13:34:09 -0700
commit16d00fb7765a43a1b05989062e985d283b3a1f2d (patch)
tree8395f341ee34c1bb57433253eb6b722b5644665c /net
parent5a6d34162f5c6f522f857df274f1c8240f161e11 (diff)
downloadlinux-16d00fb7765a43a1b05989062e985d283b3a1f2d.tar.bz2
[SCTP]: Verify all destination ports in sctp_connectx.
We need to make sure that all destination ports are the same, since the association really must not connect to multiple different ports at once. This was reported on the sctp-impl list. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/sctp/socket.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index 2fc0a92caa78..b2ffab62a229 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -972,6 +972,7 @@ static int __sctp_connect(struct sock* sk,
int walk_size = 0;
union sctp_addr *sa_addr;
void *addr_buf;
+ unsigned short port;
sp = sctp_sk(sk);
ep = sp->ep;
@@ -992,6 +993,7 @@ static int __sctp_connect(struct sock* sk,
while (walk_size < addrs_size) {
sa_addr = (union sctp_addr *)addr_buf;
af = sctp_get_af_specific(sa_addr->sa.sa_family);
+ port = ntohs(sa_addr->v4.sin_port);
/* If the address family is not supported or if this address
* causes the address buffer to overflow return EINVAL.
@@ -1005,6 +1007,12 @@ static int __sctp_connect(struct sock* sk,
if (err)
goto out_free;
+ /* Make sure the destination port is correctly set
+ * in all addresses.
+ */
+ if (asoc && asoc->peer.port && asoc->peer.port != port)
+ goto out_free;
+
memcpy(&to, sa_addr, af->sockaddr_len);
/* Check if there already is a matching association on the