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authorMarcel Holtmann <marcel@holtmann.org>2005-09-13 01:32:31 +0200
committerMarcel Holtmann <marcel@holtmann.org>2005-09-13 01:32:31 +0200
commit354d28d5f8546e115ebaae9311897f0bc4b6a8d4 (patch)
tree0eb7bd932d43047b592b80d42808f8cdc33286c8 /net/bluetooth
parent21d9e30ed020d24336cc3bee2a4e04da232ed554 (diff)
downloadlinux-354d28d5f8546e115ebaae9311897f0bc4b6a8d4.tar.bz2
[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/bluetooth')
-rw-r--r--net/bluetooth/rfcomm/sock.c30
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);