korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-29 07:04:10 +08:00
Code Issues Packages Projects Releases Wiki Activity

Bluetooth: Fix potential NULL dereference

Browse Source 
The bnep_get_device function may be triggered by an ioctl just after a
connection has gone down. In such a case the respective L2CAP chan->conn
pointer will get set to NULL (by l2cap_chan_del). This patch adds a
missing NULL check for this case in the bnep_get_device() function.

Reported-by: Patrik Flykt <patrik.flykt@linux.intel.com>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Johan Hedberg 2015-02-03 10:01:13 +02:00 committed by Marcel Holtmann
parent 8f0c304c69
commit 88d9077c27
1 changed files with 3 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
net/bluetooth/bnep/core.c
View File

@ -511,13 +511,12 @@ static int bnep_session(void *arg)
static struct device *bnep_get_device(struct bnep_session *session)
{
struct hci_conn *conn;
struct l2cap_conn *conn = l2cap_pi(session->sock->sk)->chan->conn;
conn = l2cap_pi(session->sock->sk)->chan->conn->hcon;
if (!conn)
if (!conn || !conn->hcon)
return NULL;
return &conn->dev;
return &conn->hcon->dev;
}
static struct device_type bnep_type = {