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| author | Marcel Holtmann <marcel@holtmann.org> | 2005-09-13 01:32:31 +0200 |
|---|---|---|
| committer | Marcel Holtmann <marcel@holtmann.org> | 2005-09-13 01:32:31 +0200 |
| commit | 354d28d5f8546e115ebaae9311897f0bc4b6a8d4 (patch) | |
| tree | 0eb7bd932d43047b592b80d42808f8cdc33286c8 /net | |
| parent | 21d9e30ed020d24336cc3bee2a4e04da232ed554 (diff) | |
| download | linux-354d28d5f8546e115ebaae9311897f0bc4b6a8d4.tar.gz linux-354d28d5f8546e115ebaae9311897f0bc4b6a8d4.tar.bz2 linux-354d28d5f8546e115ebaae9311897f0bc4b6a8d4.zip | |
[Bluetooth] Prevent RFCOMM connections through the RAW socket
This patch adds additional checks to prevent RFCOMM connections be
established through the RAW socket interface.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'net')
| -rw-r--r-- | net/bluetooth/rfcomm/sock.c | 30 |
1 files changed, 25 insertions, 5 deletions
diff --git a/net/bluetooth/rfcomm/sock.c b/net/bluetooth/rfcomm/sock.c index 90e19eb6d3cc..f49e7e938bfb 100644 --- a/net/bluetooth/rfcomm/sock.c +++ b/net/bluetooth/rfcomm/sock.c @@ -363,6 +363,11 @@ static int rfcomm_sock_bind(struct socket *sock, struct sockaddr *addr, int addr goto done; } + if (sk->sk_type != SOCK_STREAM) { + err = -EINVAL; + goto done; + } + write_lock_bh(&rfcomm_sk_list.lock); if (sa->rc_channel && __rfcomm_get_sock_by_addr(sa->rc_channel, &sa->rc_bdaddr)) { @@ -393,13 +398,17 @@ static int rfcomm_sock_connect(struct socket *sock, struct sockaddr *addr, int a if (addr->sa_family != AF_BLUETOOTH || alen < sizeof(struct sockaddr_rc)) return -EINVAL; - if (sk->sk_state != BT_OPEN && sk->sk_state != BT_BOUND) - return -EBADFD; + lock_sock(sk); - if (sk->sk_type != SOCK_STREAM) - return -EINVAL; + if (sk->sk_state != BT_OPEN && sk->sk_state != BT_BOUND) { + err = -EBADFD; + goto done; + } - lock_sock(sk); + if (sk->sk_type != SOCK_STREAM) { + err = -EINVAL; + goto done; + } sk->sk_state = BT_CONNECT; bacpy(&bt_sk(sk)->dst, &sa->rc_bdaddr); @@ -410,6 +419,7 @@ static int rfcomm_sock_connect(struct socket *sock, struct sockaddr *addr, int a err = bt_sock_wait_state(sk, BT_CONNECTED, sock_sndtimeo(sk, flags & O_NONBLOCK)); +done: release_sock(sk); return err; } @@ -428,6 +438,11 @@ static int rfcomm_sock_listen(struct socket *sock, int backlog) goto done; } + if (sk->sk_type != SOCK_STREAM) { + err = -EINVAL; + goto done; + } + if (!rfcomm_pi(sk)->channel) { bdaddr_t *src = &bt_sk(sk)->src; u8 channel; @@ -472,6 +487,11 @@ static int rfcomm_sock_accept(struct socket *sock, struct socket *newsock, int f goto done; } + if (sk->sk_type != SOCK_STREAM) { + err = -EINVAL; + goto done; + } + timeo = sock_rcvtimeo(sk, flags & O_NONBLOCK); BT_DBG("sk %p timeo %ld", sk, timeo); |