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| author | Marcel Holtmann <marcel@holtmann.org> | 2006-02-13 11:40:03 +0100 |
|---|---|---|
| committer | Marcel Holtmann <marcel@holtmann.org> | 2006-02-13 11:40:03 +0100 |
| commit | 7b005bd34c895ebeefd1c62f90a329730b88946b (patch) | |
| tree | 7a7143c1b29b902122fe5e17a10ad4cb2ec66291 | |
| parent | 56f3a40a5e7586043260669cc794e56fa58339e1 (diff) | |
| download | linux-7b005bd34c895ebeefd1c62f90a329730b88946b.tar.gz linux-7b005bd34c895ebeefd1c62f90a329730b88946b.tar.bz2 linux-7b005bd34c895ebeefd1c62f90a329730b88946b.zip | |
[Bluetooth] Fix NULL pointer dereferences of the HCI socket
This patch fixes the two NULL pointer dereferences found by the sfuzz
tool from Ilja van Sprundel. The first one was a call of getsockname()
for an unbound socket and the second was calling accept() while this
operation isn't implemented for the HCI socket interface.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
| -rw-r--r-- | net/bluetooth/hci_sock.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/net/bluetooth/hci_sock.c b/net/bluetooth/hci_sock.c index bdb6458c6bd5..97bdec73d17e 100644 --- a/net/bluetooth/hci_sock.c +++ b/net/bluetooth/hci_sock.c @@ -143,13 +143,15 @@ void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb) static int hci_sock_release(struct socket *sock) { struct sock *sk = sock->sk; - struct hci_dev *hdev = hci_pi(sk)->hdev; + struct hci_dev *hdev; BT_DBG("sock %p sk %p", sock, sk); if (!sk) return 0; + hdev = hci_pi(sk)->hdev; + bt_sock_unlink(&hci_sk_list, sk); if (hdev) { @@ -311,14 +313,18 @@ static int hci_sock_getname(struct socket *sock, struct sockaddr *addr, int *add { struct sockaddr_hci *haddr = (struct sockaddr_hci *) addr; struct sock *sk = sock->sk; + struct hci_dev *hdev = hci_pi(sk)->hdev; BT_DBG("sock %p sk %p", sock, sk); + if (!hdev) + return -EBADFD; + lock_sock(sk); *addr_len = sizeof(*haddr); haddr->hci_family = AF_BLUETOOTH; - haddr->hci_dev = hci_pi(sk)->hdev->id; + haddr->hci_dev = hdev->id; release_sock(sk); return 0; |