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| author | Steffen Hurrle <steffen@hurrle.net> | 2014-01-17 22:53:15 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-01-18 23:04:16 -0800 |
| commit | 342dfc306fb32155314dad277f3c3686b83fb9f1 (patch) | |
| tree | a0d220f9310725c72bac70945261c9282e7cf305 /net/tipc | |
| parent | ea02f9411d9faa3553ed09ce0ec9f00ceae9885e (diff) | |
| download | kernel-common-342dfc306fb32155314dad277f3c3686b83fb9f1.tar.gz kernel-common-342dfc306fb32155314dad277f3c3686b83fb9f1.tar.bz2 kernel-common-342dfc306fb32155314dad277f3c3686b83fb9f1.zip | |
net: add build-time checks for msg->msg_name size
This is a follow-up patch to f3d3342602f8bc ("net: rework recvmsg
handler msg_name and msg_namelen logic").
DECLARE_SOCKADDR validates that the structure we use for writing the
name information to is not larger than the buffer which is reserved
for msg->msg_name (which is 128 bytes). Also use DECLARE_SOCKADDR
consistently in sendmsg code paths.
Signed-off-by: Steffen Hurrle <steffen@hurrle.net>
Suggested-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/tipc')
| -rw-r--r-- | net/tipc/socket.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/net/tipc/socket.c b/net/tipc/socket.c index eab17eb9ca1d..aab4948f0aff 100644 --- a/net/tipc/socket.c +++ b/net/tipc/socket.c @@ -608,7 +608,7 @@ static int send_msg(struct kiocb *iocb, struct socket *sock, { struct sock *sk = sock->sk; struct tipc_port *tport = tipc_sk_port(sk); - struct sockaddr_tipc *dest = (struct sockaddr_tipc *)m->msg_name; + DECLARE_SOCKADDR(struct sockaddr_tipc *, dest, m->msg_name); int needs_conn; long timeo; int res = -EINVAL; @@ -736,7 +736,7 @@ static int send_packet(struct kiocb *iocb, struct socket *sock, { struct sock *sk = sock->sk; struct tipc_port *tport = tipc_sk_port(sk); - struct sockaddr_tipc *dest = (struct sockaddr_tipc *)m->msg_name; + DECLARE_SOCKADDR(struct sockaddr_tipc *, dest, m->msg_name); int res = -EINVAL; long timeo; @@ -906,7 +906,7 @@ static int auto_connect(struct socket *sock, struct tipc_msg *msg) */ static void set_orig_addr(struct msghdr *m, struct tipc_msg *msg) { - struct sockaddr_tipc *addr = (struct sockaddr_tipc *)m->msg_name; + DECLARE_SOCKADDR(struct sockaddr_tipc *, addr, m->msg_name); if (addr) { addr->family = AF_TIPC; |