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-rw-r--r--net/bluetooth/hci_conn.c27
-rw-r--r--net/bluetooth/hci_core.c52
-rw-r--r--net/bluetooth/hci_event.c46
-rw-r--r--net/bluetooth/hci_sync.c17
-rw-r--r--net/bluetooth/iso.c34
-rw-r--r--net/bluetooth/l2cap_sock.c3
-rw-r--r--net/bluetooth/mgmt.c269
-rw-r--r--net/bluetooth/mgmt_config.c4
-rw-r--r--net/bluetooth/mgmt_util.c46
-rw-r--r--net/bluetooth/mgmt_util.h3
-rw-r--r--net/bluetooth/sco.c7
11 files changed, 372 insertions, 136 deletions
diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c
index e524bb59bff2..111f0e37b672 100644
--- a/net/bluetooth/hci_conn.c
+++ b/net/bluetooth/hci_conn.c
@@ -924,10 +924,9 @@ static struct hci_conn *__hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t
case CIS_LINK:
case BIS_LINK:
case PA_LINK:
- if (hdev->iso_mtu)
- /* Dedicated ISO Buffer exists */
- break;
- fallthrough;
+ if (!hdev->iso_mtu)
+ return ERR_PTR(-ECONNREFUSED);
+ break;
case LE_LINK:
if (hdev->le_mtu && hdev->le_mtu < HCI_MIN_LE_MTU)
return ERR_PTR(-ECONNREFUSED);
@@ -1540,7 +1539,7 @@ static int qos_set_bis(struct hci_dev *hdev, struct bt_iso_qos *qos)
/* This function requires the caller holds hdev->lock */
static struct hci_conn *hci_add_bis(struct hci_dev *hdev, bdaddr_t *dst,
__u8 sid, struct bt_iso_qos *qos,
- __u8 base_len, __u8 *base)
+ __u8 base_len, __u8 *base, u16 timeout)
{
struct hci_conn *conn;
int err;
@@ -1582,6 +1581,7 @@ static struct hci_conn *hci_add_bis(struct hci_dev *hdev, bdaddr_t *dst,
conn->state = BT_CONNECT;
conn->sid = sid;
+ conn->conn_timeout = timeout;
hci_conn_hold(conn);
return conn;
@@ -1922,7 +1922,8 @@ done:
}
struct hci_conn *hci_bind_cis(struct hci_dev *hdev, bdaddr_t *dst,
- __u8 dst_type, struct bt_iso_qos *qos)
+ __u8 dst_type, struct bt_iso_qos *qos,
+ u16 timeout)
{
struct hci_conn *cis;
@@ -1937,6 +1938,7 @@ struct hci_conn *hci_bind_cis(struct hci_dev *hdev, bdaddr_t *dst,
cis->dst_type = dst_type;
cis->iso_qos.ucast.cig = BT_ISO_QOS_CIG_UNSET;
cis->iso_qos.ucast.cis = BT_ISO_QOS_CIS_UNSET;
+ cis->conn_timeout = timeout;
}
if (cis->state == BT_CONNECTED)
@@ -2176,7 +2178,7 @@ static void create_big_complete(struct hci_dev *hdev, void *data, int err)
struct hci_conn *hci_bind_bis(struct hci_dev *hdev, bdaddr_t *dst, __u8 sid,
struct bt_iso_qos *qos,
- __u8 base_len, __u8 *base)
+ __u8 base_len, __u8 *base, u16 timeout)
{
struct hci_conn *conn;
struct hci_conn *parent;
@@ -2197,7 +2199,7 @@ struct hci_conn *hci_bind_bis(struct hci_dev *hdev, bdaddr_t *dst, __u8 sid,
base, base_len);
/* We need hci_conn object using the BDADDR_ANY as dst */
- conn = hci_add_bis(hdev, dst, sid, qos, base_len, eir);
+ conn = hci_add_bis(hdev, dst, sid, qos, base_len, eir, timeout);
if (IS_ERR(conn))
return conn;
@@ -2250,13 +2252,13 @@ static void bis_mark_per_adv(struct hci_conn *conn, void *data)
struct hci_conn *hci_connect_bis(struct hci_dev *hdev, bdaddr_t *dst,
__u8 dst_type, __u8 sid,
struct bt_iso_qos *qos,
- __u8 base_len, __u8 *base)
+ __u8 base_len, __u8 *base, u16 timeout)
{
struct hci_conn *conn;
int err;
struct iso_list_data data;
- conn = hci_bind_bis(hdev, dst, sid, qos, base_len, base);
+ conn = hci_bind_bis(hdev, dst, sid, qos, base_len, base, timeout);
if (IS_ERR(conn))
return conn;
@@ -2299,7 +2301,8 @@ struct hci_conn *hci_connect_bis(struct hci_dev *hdev, bdaddr_t *dst,
}
struct hci_conn *hci_connect_cis(struct hci_dev *hdev, bdaddr_t *dst,
- __u8 dst_type, struct bt_iso_qos *qos)
+ __u8 dst_type, struct bt_iso_qos *qos,
+ u16 timeout)
{
struct hci_conn *le;
struct hci_conn *cis;
@@ -2323,7 +2326,7 @@ struct hci_conn *hci_connect_cis(struct hci_dev *hdev, bdaddr_t *dst,
hci_iso_qos_setup(hdev, le, &qos->ucast.in,
le->le_rx_phy ? le->le_rx_phy : hdev->le_rx_def_phys);
- cis = hci_bind_cis(hdev, dst, dst_type, qos);
+ cis = hci_bind_cis(hdev, dst, dst_type, qos, timeout);
if (IS_ERR(cis)) {
hci_conn_drop(le);
return cis;
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index 55e0722fd066..3418d7b964a1 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -3267,6 +3267,8 @@ static void hci_queue_acl(struct hci_chan *chan, struct sk_buff_head *queue,
spin_unlock_bh(&queue->lock);
}
+
+ bt_dev_dbg(hdev, "chan %p queued %d", chan, skb_queue_len(queue));
}
void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags)
@@ -3298,6 +3300,10 @@ void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb)
hci_skb_pkt_type(skb) = HCI_SCODATA_PKT;
skb_queue_tail(&conn->data_q, skb);
+
+ bt_dev_dbg(hdev, "hcon %p queued %d", conn,
+ skb_queue_len(&conn->data_q));
+
queue_work(hdev->workqueue, &hdev->tx_work);
}
@@ -3357,6 +3363,8 @@ static void hci_queue_iso(struct hci_conn *conn, struct sk_buff_head *queue,
__skb_queue_tail(queue, skb);
} while (list);
}
+
+ bt_dev_dbg(hdev, "hcon %p queued %d", conn, skb_queue_len(queue));
}
void hci_send_iso(struct hci_conn *conn, struct sk_buff *skb)
@@ -3399,8 +3407,7 @@ static inline void hci_quote_sent(struct hci_conn *conn, int num, int *quote)
case CIS_LINK:
case BIS_LINK:
case PA_LINK:
- cnt = hdev->iso_mtu ? hdev->iso_cnt :
- hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt;
+ cnt = hdev->iso_cnt;
break;
default:
cnt = 0;
@@ -3428,6 +3435,10 @@ static struct hci_conn *hci_low_sent(struct hci_dev *hdev, __u8 type,
skb_queue_empty(&c->data_q))
continue;
+ bt_dev_dbg(hdev, "hcon %p state %s queued %d", c,
+ state_to_string(c->state),
+ skb_queue_len(&c->data_q));
+
if (c->state != BT_CONNECTED && c->state != BT_CONFIG)
continue;
@@ -3586,24 +3597,37 @@ static void hci_prio_recalculate(struct hci_dev *hdev, __u8 type)
static void __check_timeout(struct hci_dev *hdev, unsigned int cnt, u8 type)
{
- unsigned long last_tx;
+ unsigned long timeout;
if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED))
return;
switch (type) {
+ case ACL_LINK:
+ /* tx timeout must be longer than maximum link supervision
+ * timeout (40.9 seconds)
+ */
+ timeout = hdev->acl_last_tx + HCI_ACL_TX_TIMEOUT;
+ break;
case LE_LINK:
- last_tx = hdev->le_last_tx;
+ /* tx timeout must be longer than maximum link supervision
+ * timeout (40.9 seconds)
+ */
+ timeout = hdev->le_last_tx + HCI_ACL_TX_TIMEOUT;
break;
- default:
- last_tx = hdev->acl_last_tx;
+ case CIS_LINK:
+ case BIS_LINK:
+ case PA_LINK:
+ /* tx timeout must be longer than the maximum transport latency
+ * (8.388607 seconds)
+ */
+ timeout = hdev->iso_last_tx + HCI_ISO_TX_TIMEOUT;
break;
+ default:
+ return;
}
- /* tx timeout must be longer than maximum link supervision timeout
- * (40.9 seconds)
- */
- if (!cnt && time_after(jiffies, last_tx + HCI_ACL_TX_TIMEOUT))
+ if (!cnt && time_after(jiffies, timeout))
hci_link_tx_to(hdev, type);
}
@@ -3759,12 +3783,16 @@ static void hci_sched_iso(struct hci_dev *hdev, __u8 type)
if (!hci_conn_num(hdev, type))
return;
- cnt = hdev->iso_pkts ? &hdev->iso_cnt :
- hdev->le_pkts ? &hdev->le_cnt : &hdev->acl_cnt;
+ cnt = &hdev->iso_cnt;
+
+ __check_timeout(hdev, *cnt, type);
+
while (*cnt && (conn = hci_low_sent(hdev, type, &quote))) {
while (quote-- && (skb = skb_dequeue(&conn->data_q))) {
BT_DBG("skb %p len %d", skb, skb->len);
+
hci_send_conn_frame(hdev, conn, skb);
+ hdev->iso_last_tx = jiffies;
conn->sent++;
if (conn->sent == ~0)
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index 7a2174851857..d790b0d4eb9a 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -3087,8 +3087,18 @@ static void hci_conn_complete_evt(struct hci_dev *hdev, void *data,
hci_dev_lock(hdev);
+ /* Check for existing connection:
+ *
+ * 1. If it doesn't exist then it must be receiver/slave role.
+ * 2. If it does exist confirm that it is connecting/BT_CONNECT in case
+ * of initiator/master role since there could be a collision where
+ * either side is attempting to connect or something like a fuzzing
+ * testing is trying to play tricks to destroy the hcon object before
+ * it even attempts to connect (e.g. hcon->state == BT_OPEN).
+ */
conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr);
- if (!conn) {
+ if (!conn ||
+ (conn->role == HCI_ROLE_MASTER && conn->state != BT_CONNECT)) {
/* In case of error status and there is no connection pending
* just unlock as there is nothing to cleanup.
*/
@@ -4391,6 +4401,8 @@ static void hci_num_comp_pkts_evt(struct hci_dev *hdev, void *data,
bt_dev_dbg(hdev, "num %d", ev->num);
+ hci_dev_lock(hdev);
+
for (i = 0; i < ev->num; i++) {
struct hci_comp_pkts_info *info = &ev->handles[i];
struct hci_conn *conn;
@@ -4449,19 +4461,9 @@ static void hci_num_comp_pkts_evt(struct hci_dev *hdev, void *data,
case CIS_LINK:
case BIS_LINK:
case PA_LINK:
- if (hdev->iso_pkts) {
- hdev->iso_cnt += count;
- if (hdev->iso_cnt > hdev->iso_pkts)
- hdev->iso_cnt = hdev->iso_pkts;
- } else if (hdev->le_pkts) {
- hdev->le_cnt += count;
- if (hdev->le_cnt > hdev->le_pkts)
- hdev->le_cnt = hdev->le_pkts;
- } else {
- hdev->acl_cnt += count;
- if (hdev->acl_cnt > hdev->acl_pkts)
- hdev->acl_cnt = hdev->acl_pkts;
- }
+ hdev->iso_cnt += count;
+ if (hdev->iso_cnt > hdev->iso_pkts)
+ hdev->iso_cnt = hdev->iso_pkts;
break;
default:
@@ -4472,6 +4474,8 @@ static void hci_num_comp_pkts_evt(struct hci_dev *hdev, void *data,
}
queue_work(hdev->workqueue, &hdev->tx_work);
+
+ hci_dev_unlock(hdev);
}
static void hci_mode_change_evt(struct hci_dev *hdev, void *data,
@@ -5634,8 +5638,18 @@ static void le_conn_complete_evt(struct hci_dev *hdev, u8 status,
*/
hci_dev_clear_flag(hdev, HCI_LE_ADV);
- conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, bdaddr);
- if (!conn) {
+ /* Check for existing connection:
+ *
+ * 1. If it doesn't exist then use the role to create a new object.
+ * 2. If it does exist confirm that it is connecting/BT_CONNECT in case
+ * of initiator/master role since there could be a collision where
+ * either side is attempting to connect or something like a fuzzing
+ * testing is trying to play tricks to destroy the hcon object before
+ * it even attempts to connect (e.g. hcon->state == BT_OPEN).
+ */
+ conn = hci_conn_hash_lookup_role(hdev, LE_LINK, role, bdaddr);
+ if (!conn ||
+ (conn->role == HCI_ROLE_MASTER && conn->state != BT_CONNECT)) {
/* In case of error status and there is no connection pending
* just unlock as there is nothing to cleanup.
*/
diff --git a/net/bluetooth/hci_sync.c b/net/bluetooth/hci_sync.c
index b6f888d8354e..eefdb6134ca5 100644
--- a/net/bluetooth/hci_sync.c
+++ b/net/bluetooth/hci_sync.c
@@ -1325,7 +1325,7 @@ int hci_setup_ext_adv_instance_sync(struct hci_dev *hdev, u8 instance)
{
struct hci_cp_le_set_ext_adv_params cp;
struct hci_rp_le_set_ext_adv_params rp;
- bool connectable;
+ bool connectable, require_privacy;
u32 flags;
bdaddr_t random_addr;
u8 own_addr_type;
@@ -1363,10 +1363,12 @@ int hci_setup_ext_adv_instance_sync(struct hci_dev *hdev, u8 instance)
return -EPERM;
/* Set require_privacy to true only when non-connectable
- * advertising is used. In that case it is fine to use a
- * non-resolvable private address.
+ * advertising is used and it is not periodic.
+ * In that case it is fine to use a non-resolvable private address.
*/
- err = hci_get_random_address(hdev, !connectable,
+ require_privacy = !connectable && !(adv && adv->periodic);
+
+ err = hci_get_random_address(hdev, require_privacy,
adv_use_rpa(hdev, flags), adv,
&own_addr_type, &random_addr);
if (err < 0)
@@ -2594,6 +2596,13 @@ static int hci_resume_advertising_sync(struct hci_dev *hdev)
hci_remove_ext_adv_instance_sync(hdev, adv->instance,
NULL);
}
+
+ /* If current advertising instance is set to instance 0x00
+ * then we need to re-enable it.
+ */
+ if (!hdev->cur_adv_instance)
+ err = hci_enable_ext_advertising_sync(hdev,
+ hdev->cur_adv_instance);
} else {
/* Schedule for most recent instance to be restarted and begin
* the software rotation loop
diff --git a/net/bluetooth/iso.c b/net/bluetooth/iso.c
index 5ce823ca3aaf..9b263d061e05 100644
--- a/net/bluetooth/iso.c
+++ b/net/bluetooth/iso.c
@@ -91,8 +91,8 @@ static struct sock *iso_get_sock(bdaddr_t *src, bdaddr_t *dst,
iso_sock_match_t match, void *data);
/* ---- ISO timers ---- */
-#define ISO_CONN_TIMEOUT (HZ * 40)
-#define ISO_DISCONN_TIMEOUT (HZ * 2)
+#define ISO_CONN_TIMEOUT secs_to_jiffies(20)
+#define ISO_DISCONN_TIMEOUT secs_to_jiffies(2)
static void iso_conn_free(struct kref *ref)
{
@@ -111,6 +111,8 @@ static void iso_conn_free(struct kref *ref)
/* Ensure no more work items will run since hci_conn has been dropped */
disable_delayed_work_sync(&conn->timeout_work);
+ kfree_skb(conn->rx_skb);
+
kfree(conn);
}
@@ -367,7 +369,8 @@ static int iso_connect_bis(struct sock *sk)
if (test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags)) {
hcon = hci_bind_bis(hdev, &iso_pi(sk)->dst, iso_pi(sk)->bc_sid,
&iso_pi(sk)->qos, iso_pi(sk)->base_len,
- iso_pi(sk)->base);
+ iso_pi(sk)->base,
+ READ_ONCE(sk->sk_sndtimeo));
if (IS_ERR(hcon)) {
err = PTR_ERR(hcon);
goto unlock;
@@ -376,7 +379,8 @@ static int iso_connect_bis(struct sock *sk)
hcon = hci_connect_bis(hdev, &iso_pi(sk)->dst,
le_addr_type(iso_pi(sk)->dst_type),
iso_pi(sk)->bc_sid, &iso_pi(sk)->qos,
- iso_pi(sk)->base_len, iso_pi(sk)->base);
+ iso_pi(sk)->base_len, iso_pi(sk)->base,
+ READ_ONCE(sk->sk_sndtimeo));
if (IS_ERR(hcon)) {
err = PTR_ERR(hcon);
goto unlock;
@@ -458,11 +462,19 @@ static int iso_connect_cis(struct sock *sk)
goto unlock;
}
+ /* Check if there are available buffers for output/TX. */
+ if (iso_pi(sk)->qos.ucast.out.sdu && !hci_iso_count(hdev) &&
+ (hdev->iso_pkts && !hdev->iso_cnt)) {
+ err = -ENOBUFS;
+ goto unlock;
+ }
+
/* Just bind if DEFER_SETUP has been set */
if (test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags)) {
hcon = hci_bind_cis(hdev, &iso_pi(sk)->dst,
le_addr_type(iso_pi(sk)->dst_type),
- &iso_pi(sk)->qos);
+ &iso_pi(sk)->qos,
+ READ_ONCE(sk->sk_sndtimeo));
if (IS_ERR(hcon)) {
err = PTR_ERR(hcon);
goto unlock;
@@ -470,7 +482,8 @@ static int iso_connect_cis(struct sock *sk)
} else {
hcon = hci_connect_cis(hdev, &iso_pi(sk)->dst,
le_addr_type(iso_pi(sk)->dst_type),
- &iso_pi(sk)->qos);
+ &iso_pi(sk)->qos,
+ READ_ONCE(sk->sk_sndtimeo));
if (IS_ERR(hcon)) {
err = PTR_ERR(hcon);
goto unlock;
@@ -750,6 +763,13 @@ static void iso_sock_kill(struct sock *sk)
BT_DBG("sk %p state %d", sk, sk->sk_state);
+ /* Sock is dead, so set conn->sk to NULL to avoid possible UAF */
+ if (iso_pi(sk)->conn) {
+ iso_conn_lock(iso_pi(sk)->conn);
+ iso_pi(sk)->conn->sk = NULL;
+ iso_conn_unlock(iso_pi(sk)->conn);
+ }
+
/* Kill poor orphan */
bt_sock_unlink(&iso_sk_list, sk);
sock_set_flag(sk, SOCK_DEAD);
@@ -2407,7 +2427,7 @@ void iso_recv(struct hci_conn *hcon, struct sk_buff *skb, u16 flags)
skb_copy_from_linear_data(skb, skb_put(conn->rx_skb, skb->len),
skb->len);
conn->rx_len -= skb->len;
- return;
+ break;
case ISO_END:
skb_copy_from_linear_data(skb, skb_put(conn->rx_skb, skb->len),
diff --git a/net/bluetooth/l2cap_sock.c b/net/bluetooth/l2cap_sock.c
index f4257c4d3052..814fb8610ac4 100644
--- a/net/bluetooth/l2cap_sock.c
+++ b/net/bluetooth/l2cap_sock.c
@@ -1422,7 +1422,10 @@ static int l2cap_sock_release(struct socket *sock)
if (!sk)
return 0;
+ lock_sock_nested(sk, L2CAP_NESTING_PARENT);
l2cap_sock_cleanup_listen(sk);
+ release_sock(sk);
+
bt_sock_unlink(&l2cap_sk_list, sk);
err = l2cap_sock_shutdown(sock, SHUT_RDWR);
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index 50634ef5c8b7..a3d16eece0d2 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -1323,8 +1323,7 @@ static void mgmt_set_powered_complete(struct hci_dev *hdev, void *data, int err)
struct mgmt_mode *cp;
/* Make sure cmd still outstanding. */
- if (err == -ECANCELED ||
- cmd != pending_find(MGMT_OP_SET_POWERED, hdev))
+ if (err == -ECANCELED || !mgmt_pending_valid(hdev, cmd))
return;
cp = cmd->param;
@@ -1351,23 +1350,29 @@ static void mgmt_set_powered_complete(struct hci_dev *hdev, void *data, int err)
mgmt_status(err));
}
- mgmt_pending_remove(cmd);
+ mgmt_pending_free(cmd);
}
static int set_powered_sync(struct hci_dev *hdev, void *data)
{
struct mgmt_pending_cmd *cmd = data;
- struct mgmt_mode *cp;
+ struct mgmt_mode cp;
+
+ mutex_lock(&hdev->mgmt_pending_lock);
/* Make sure cmd still outstanding. */
- if (cmd != pending_find(MGMT_OP_SET_POWERED, hdev))
+ if (!__mgmt_pending_listed(hdev, cmd)) {
+ mutex_unlock(&hdev->mgmt_pending_lock);
return -ECANCELED;
+ }
- cp = cmd->param;
+ memcpy(&cp, cmd->param, sizeof(cp));
+
+ mutex_unlock(&hdev->mgmt_pending_lock);
BT_DBG("%s", hdev->name);
- return hci_set_powered_sync(hdev, cp->val);
+ return hci_set_powered_sync(hdev, cp.val);
}
static int set_powered(struct sock *sk, struct hci_dev *hdev, void *data,
@@ -1516,8 +1521,7 @@ static void mgmt_set_discoverable_complete(struct hci_dev *hdev, void *data,
bt_dev_dbg(hdev, "err %d", err);
/* Make sure cmd still outstanding. */
- if (err == -ECANCELED ||
- cmd != pending_find(MGMT_OP_SET_DISCOVERABLE, hdev))
+ if (err == -ECANCELED || !mgmt_pending_valid(hdev, cmd))
return;
hci_dev_lock(hdev);
@@ -1539,12 +1543,15 @@ static void mgmt_set_discoverable_complete(struct hci_dev *hdev, void *data,
new_settings(hdev, cmd->sk);
done:
- mgmt_pending_remove(cmd);
+ mgmt_pending_free(cmd);
hci_dev_unlock(hdev);
}
static int set_discoverable_sync(struct hci_dev *hdev, void *data)
{
+ if (!mgmt_pending_listed(hdev, data))
+ return -ECANCELED;
+
BT_DBG("%s", hdev->name);
return hci_update_discoverable_sync(hdev);
@@ -1691,8 +1698,7 @@ static void mgmt_set_connectable_complete(struct hci_dev *hdev, void *data,
bt_dev_dbg(hdev, "err %d", err);
/* Make sure cmd still outstanding. */
- if (err == -ECANCELED ||
- cmd != pending_find(MGMT_OP_SET_CONNECTABLE, hdev))
+ if (err == -ECANCELED || !mgmt_pending_valid(hdev, cmd))
return;
hci_dev_lock(hdev);
@@ -1707,7 +1713,7 @@ static void mgmt_set_connectable_complete(struct hci_dev *hdev, void *data,
new_settings(hdev, cmd->sk);
done:
- mgmt_pending_remove(cmd);
+ mgmt_pending_free(cmd);
hci_dev_unlock(hdev);
}
@@ -1743,6 +1749,9 @@ static int set_connectable_update_settings(struct hci_dev *hdev,
static int set_connectable_sync(struct hci_dev *hdev, void *data)
{
+ if (!mgmt_pending_listed(hdev, data))
+ return -ECANCELED;
+
BT_DBG("%s", hdev->name);
return hci_update_connectable_sync(hdev);
@@ -1919,14 +1928,17 @@ static void set_ssp_complete(struct hci_dev *hdev, void *data, int err)
{
struct cmd_lookup match = { NULL, hdev };
struct mgmt_pending_cmd *cmd = data;
- struct mgmt_mode *cp = cmd->param;
- u8 enable = cp->val;
+ struct mgmt_mode *cp;
+ u8 enable;
bool changed;
/* Make sure cmd still outstanding. */
- if (err == -ECANCELED || cmd != pending_find(MGMT_OP_SET_SSP, hdev))
+ if (err == -ECANCELED || !mgmt_pending_valid(hdev, cmd))
return;
+ cp = cmd->param;
+ enable = cp->val;
+
if (err) {
u8 mgmt_err = mgmt_status(err);
@@ -1935,8 +1947,7 @@ static void set_ssp_complete(struct hci_dev *hdev, void *data, int err)
new_settings(hdev, NULL);
}
- mgmt_pending_foreach(MGMT_OP_SET_SSP, hdev, true,
- cmd_status_rsp, &mgmt_err);
+ mgmt_cmd_status(cmd->sk, cmd->hdev->id, cmd->opcode, mgmt_err);
return;
}
@@ -1946,7 +1957,7 @@ static void set_ssp_complete(struct hci_dev *hdev, void *data, int err)
changed = hci_dev_test_and_clear_flag(hdev, HCI_SSP_ENABLED);
}
- mgmt_pending_foreach(MGMT_OP_SET_SSP, hdev, true, settings_rsp, &match);
+ settings_rsp(cmd, &match);
if (changed)
new_settings(hdev, match.sk);
@@ -1960,14 +1971,25 @@ static void set_ssp_complete(struct hci_dev *hdev, void *data, int err)
static int set_ssp_sync(struct hci_dev *hdev, void *data)
{
struct mgmt_pending_cmd *cmd = data;
- struct mgmt_mode *cp = cmd->param;
+ struct mgmt_mode cp;
bool changed = false;
int err;
- if (cp->val)
+ mutex_lock(&hdev->mgmt_pending_lock);
+
+ if (!__mgmt_pending_listed(hdev, cmd)) {
+ mutex_unlock(&hdev->mgmt_pending_lock);
+ return -ECANCELED;
+ }
+
+ memcpy(&cp, cmd->param, sizeof(cp));
+
+ mutex_unlock(&hdev->mgmt_pending_lock);
+
+ if (cp.val)
changed = !hci_dev_test_and_set_flag(hdev, HCI_SSP_ENABLED);
- err = hci_write_ssp_mode_sync(hdev, cp->val);
+ err = hci_write_ssp_mode_sync(hdev, cp.val);
if (!err && changed)
hci_dev_clear_flag(hdev, HCI_SSP_ENABLED);
@@ -2060,32 +2082,50 @@ static int set_hs(struct sock *sk, struct hci_dev *hdev, void *data, u16 len)
static void set_le_complete(struct hci_dev *hdev, void *data, int err)
{
+ struct mgmt_pending_cmd *cmd = data;
struct cmd_lookup match = { NULL, hdev };
u8 status = mgmt_status(err);
bt_dev_dbg(hdev, "err %d", err);
- if (status) {
- mgmt_pending_foreach(MGMT_OP_SET_LE, hdev, true, cmd_status_rsp,
- &status);
+ if (err == -ECANCELED || !mgmt_pending_valid(hdev, data))
return;
+
+ if (status) {
+ mgmt_cmd_status(cmd->sk, cmd->hdev->id, cmd->opcode, status);
+ goto done;
}
- mgmt_pending_foreach(MGMT_OP_SET_LE, hdev, true, settings_rsp, &match);
+ settings_rsp(cmd, &match);
new_settings(hdev, match.sk);
if (match.sk)
sock_put(match.sk);
+
+done:
+ mgmt_pending_free(cmd);
}
static int set_le_sync(struct hci_dev *hdev, void *data)
{
struct mgmt_pending_cmd *cmd = data;
- struct mgmt_mode *cp = cmd->param;
- u8 val = !!cp->val;
+ struct mgmt_mode cp;
+ u8 val;
int err;
+ mutex_lock(&hdev->mgmt_pending_lock);
+
+ if (!__mgmt_pending_listed(hdev, cmd)) {
+ mutex_unlock(&hdev->mgmt_pending_lock);
+ return -ECANCELED;
+ }
+
+ memcpy(&cp, cmd->param, sizeof(cp));
+ val = !!cp.val;
+
+ mutex_unlock(&hdev->mgmt_pending_lock);
+
if (!val) {
hci_clear_adv_instance_sync(hdev, NULL, 0x00, true);
@@ -2127,7 +2167,12 @@ static void set_mesh_complete(struct hci_dev *hdev, void *data, int err)
{
struct mgmt_pending_cmd *cmd = data;
u8 status = mgmt_status(err);
- struct sock *sk = cmd->sk;
+ struct sock *sk;
+
+ if (err == -ECANCELED || !mgmt_pending_valid(hdev, cmd))
+ return;
+
+ sk = cmd->sk;
if (status) {
mgmt_pending_foreach(MGMT_OP_SET_MESH_RECEIVER, hdev, true,
@@ -2142,24 +2187,37 @@ static void set_mesh_complete(struct hci_dev *hdev, void *data, int err)
static int set_mesh_sync(struct hci_dev *hdev, void *data)
{
struct mgmt_pending_cmd *cmd = data;
- struct mgmt_cp_set_mesh *cp = cmd->param;
- size_t len = cmd->param_len;
+ struct mgmt_cp_set_mesh cp;
+ size_t len;
+
+ mutex_lock(&hdev->mgmt_pending_lock);
+
+ if (!__mgmt_pending_listed(hdev, cmd)) {
+ mutex_unlock(&hdev->mgmt_pending_lock);
+ return -ECANCELED;
+ }
+
+ memcpy(&cp, cmd->param, sizeof(cp));
+
+ mutex_unlock(&hdev->mgmt_pending_lock);
+
+ len = cmd->param_len;
memset(hdev->mesh_ad_types, 0, sizeof(hdev->mesh_ad_types));
- if (cp->enable)
+ if (cp.enable)
hci_dev_set_flag(hdev, HCI_MESH);
else
hci_dev_clear_flag(hdev, HCI_MESH);
- hdev->le_scan_interval = __le16_to_cpu(cp->period);
- hdev->le_scan_window = __le16_to_cpu(cp->window);
+ hdev->le_scan_interval = __le16_to_cpu(cp.period);
+ hdev->le_scan_window = __le16_to_cpu(cp.window);
- len -= sizeof(*cp);
+ len -= sizeof(cp);
/* If filters don't fit, forward all adv pkts */
if (len <= sizeof(hdev->mesh_ad_types))
- memcpy(hdev->mesh_ad_types, cp->ad_types, len);
+ memcpy(hdev->mesh_ad_types, cp.ad_types, len);
hci_update_passive_scan_sync(hdev);
return 0;
@@ -3867,15 +3925,16 @@ static int name_changed_sync(struct hci_dev *hdev, void *data)
static void set_name_complete(struct hci_dev *hdev, void *data, int err)
{
struct mgmt_pending_cmd *cmd = data;
- struct mgmt_cp_set_local_name *cp = cmd->param;
+ struct mgmt_cp_set_local_name *cp;
u8 status = mgmt_status(err);
bt_dev_dbg(hdev, "err %d", err);
- if (err == -ECANCELED ||
- cmd != pending_find(MGMT_OP_SET_LOCAL_NAME, hdev))
+ if (err == -ECANCELED || !mgmt_pending_valid(hdev, cmd))
return;
+ cp = cmd->param;
+
if (status) {
mgmt_cmd_status(cmd->sk, hdev->id, MGMT_OP_SET_LOCAL_NAME,
status);
@@ -3887,16 +3946,27 @@ static void set_name_complete(struct hci_dev *hdev, void *data, int err)
hci_cmd_sync_queue(hdev, name_changed_sync, NULL, NULL);
}
- mgmt_pending_remove(cmd);
+ mgmt_pending_free(cmd);
}
static int set_name_sync(struct hci_dev *hdev, void *data)
{
struct mgmt_pending_cmd *cmd = data;
- struct mgmt_cp_set_local_name *cp = cmd->param;
+ struct mgmt_cp_set_local_name cp;
+
+ mutex_lock(&hdev->mgmt_pending_lock);
+
+ if (!__mgmt_pending_listed(hdev, cmd)) {
+ mutex_unlock(&hdev->mgmt_pending_lock);
+ return -ECANCELED;
+ }
+
+ memcpy(&cp, cmd->param, sizeof(cp));
+
+ mutex_unlock(&hdev->mgmt_pending_lock);
if (lmp_bredr_capable(hdev)) {
- hci_update_name_sync(hdev, cp->name);
+ hci_update_name_sync(hdev, cp.name);
hci_update_eir_sync(hdev);
}
@@ -4048,12 +4118,10 @@ int mgmt_phy_configuration_changed(struct hci_dev *hdev, struct sock *skip)
static void set_default_phy_complete(struct hci_dev *hdev, void *data, int err)
{
struct mgmt_pending_cmd *cmd = data;
- struct sk_buff *skb = cmd->skb;
+ struct sk_buff *skb;
u8 status = mgmt_status(err);
- if (err == -ECANCELED ||
- cmd != pending_find(MGMT_OP_SET_PHY_CONFIGURATION, hdev))
- return;
+ skb = cmd->skb;
if (!status) {
if (!skb)
@@ -4080,7 +4148,7 @@ static void set_default_phy_complete(struct hci_dev *hdev, void *data, int err)
if (skb && !IS_ERR(skb))
kfree_skb(skb);
- mgmt_pending_remove(cmd);
+ mgmt_pending_free(cmd);
}
static int set_default_phy_sync(struct hci_dev *hdev, void *data)
@@ -4088,7 +4156,9 @@ static int set_default_phy_sync(struct hci_dev *hdev, void *data)
struct mgmt_pending_cmd *cmd = data;
struct mgmt_cp_set_phy_configuration *cp = cmd->param;
struct hci_cp_le_set_default_phy cp_phy;
- u32 selected_phys = __le32_to_cpu(cp->selected_phys);
+ u32 selected_phys;
+
+ selected_phys = __le32_to_cpu(cp->selected_phys);
memset(&cp_phy, 0, sizeof(cp_phy));
@@ -4228,7 +4298,7 @@ static int set_phy_configuration(struct sock *sk, struct hci_dev *hdev,
goto unlock;
}
- cmd = mgmt_pending_add(sk, MGMT_OP_SET_PHY_CONFIGURATION, hdev, data,
+ cmd = mgmt_pending_new(sk, MGMT_OP_SET_PHY_CONFIGURATION, hdev, data,
len);
if (!cmd)
err = -ENOMEM;
@@ -4472,13 +4542,11 @@ static int read_exp_features_info(struct sock *sk, struct hci_dev *hdev,
return -ENOMEM;
#ifdef CONFIG_BT_FEATURE_DEBUG
- if (!hdev) {
- flags = bt_dbg_get() ? BIT(0) : 0;
+ flags = bt_dbg_get() ? BIT(0) : 0;
- memcpy(rp->features[idx].uuid, debug_uuid, 16);
- rp->features[idx].flags = cpu_to_le32(flags);
- idx++;
- }
+ memcpy(rp->features[idx].uuid, debug_uuid, 16);
+ rp->features[idx].flags = cpu_to_le32(flags);
+ idx++;
#endif
if (hdev && hci_dev_le_state_simultaneous(hdev)) {
@@ -5189,7 +5257,17 @@ static void mgmt_add_adv_patterns_monitor_complete(struct hci_dev *hdev,
{
struct mgmt_rp_add_adv_patterns_monitor rp;
struct mgmt_pending_cmd *cmd = data;
- struct adv_monitor *monitor = cmd->user_data;
+ struct adv_monitor *monitor;
+
+ /* This is likely the result of hdev being closed and mgmt_index_removed
+ * is attempting to clean up any pending command so
+ * hci_adv_monitors_clear is about to be called which will take care of
+ * freeing the adv_monitor instances.
+ */
+ if (status == -ECANCELED && !mgmt_pending_valid(hdev, cmd))
+ return;
+
+ monitor = cmd->user_data;
hci_dev_lock(hdev);
@@ -5215,9 +5293,20 @@ static void mgmt_add_adv_patterns_monitor_complete(struct hci_dev *hdev,
static int mgmt_add_adv_patterns_monitor_sync(struct hci_dev *hdev, void *data)
{
struct mgmt_pending_cmd *cmd = data;
- struct adv_monitor *monitor = cmd->user_data;
+ struct adv_monitor *mon;
+
+ mutex_lock(&hdev->mgmt_pending_lock);
- return hci_add_adv_monitor(hdev, monitor);
+ if (!__mgmt_pending_listed(hdev, cmd)) {
+ mutex_unlock(&hdev->mgmt_pending_lock);
+ return -ECANCELED;
+ }
+
+ mon = cmd->user_data;
+
+ mutex_unlock(&hdev->mgmt_pending_lock);
+
+ return hci_add_adv_monitor(hdev, mon);
}
static int __add_adv_patterns_monitor(struct sock *sk, struct hci_dev *hdev,
@@ -5484,7 +5573,8 @@ unlock:
status);
}
-static void read_local_oob_data_complete(struct hci_dev *hdev, void *data, int err)
+static void read_local_oob_data_complete(struct hci_dev *hdev, void *data,
+ int err)
{
struct mgmt_rp_read_local_oob_data mgmt_rp;
size_t rp_size = sizeof(mgmt_rp);
@@ -5504,7 +5594,8 @@ static void read_local_oob_data_complete(struct hci_dev *hdev, void *data, int e
bt_dev_dbg(hdev, "status %d", status);
if (status) {
- mgmt_cmd_status(cmd->sk, hdev->id, MGMT_OP_READ_LOCAL_OOB_DATA, status);
+ mgmt_cmd_status(cmd->sk, hdev->id, MGMT_OP_READ_LOCAL_OOB_DATA,
+ status);
goto remove;
}
@@ -5786,17 +5877,12 @@ static void start_discovery_complete(struct hci_dev *hdev, void *data, int err)
bt_dev_dbg(hdev, "err %d", err);
- if (err == -ECANCELED)
- return;
-
- if (cmd != pending_find(MGMT_OP_START_DISCOVERY, hdev) &&
- cmd != pending_find(MGMT_OP_START_LIMITED_DISCOVERY, hdev) &&
- cmd != pending_find(MGMT_OP_START_SERVICE_DISCOVERY, hdev))
+ if (err == -ECANCELED || !mgmt_pending_valid(hdev, cmd))
return;
mgmt_cmd_complete(cmd->sk, cmd->hdev->id, cmd->opcode, mgmt_status(err),
cmd->param, 1);
- mgmt_pending_remove(cmd);
+ mgmt_pending_free(cmd);
hci_discovery_set_state(hdev, err ? DISCOVERY_STOPPED:
DISCOVERY_FINDING);
@@ -5804,6 +5890,9 @@ static void start_discovery_complete(struct hci_dev *hdev, void *data, int err)
static int start_discovery_sync(struct hci_dev *hdev, void *data)
{
+ if (!mgmt_pending_listed(hdev, data))
+ return -ECANCELED;
+
return hci_start_discovery_sync(hdev);
}
@@ -6009,15 +6098,14 @@ static void stop_discovery_complete(struct hci_dev *hdev, void *data, int err)
{
struct mgmt_pending_cmd *cmd = data;
- if (err == -ECANCELED ||
- cmd != pending_find(MGMT_OP_STOP_DISCOVERY, hdev))
+ if (err == -ECANCELED || !mgmt_pending_valid(hdev, cmd))
return;
bt_dev_dbg(hdev, "err %d", err);
mgmt_cmd_complete(cmd->sk, cmd->hdev->id, cmd->opcode, mgmt_status(err),
cmd->param, 1);
- mgmt_pending_remove(cmd);
+ mgmt_pending_free(cmd);
if (!err)
hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
@@ -6025,6 +6113,9 @@ static void stop_discovery_complete(struct hci_dev *hdev, void *data, int err)
static int stop_discovery_sync(struct hci_dev *hdev, void *data)
{
+ if (!mgmt_pending_listed(hdev, data))
+ return -ECANCELED;
+
return hci_stop_discovery_sync(hdev);
}
@@ -6234,14 +6325,18 @@ static void enable_advertising_instance(struct hci_dev *hdev, int err)
static void set_advertising_complete(struct hci_dev *hdev, void *data, int err)
{
+ struct mgmt_pending_cmd *cmd = data;
struct cmd_lookup match = { NULL, hdev };
u8 instance;
struct adv_info *adv_instance;
u8 status = mgmt_status(err);
+ if (err == -ECANCELED || !mgmt_pending_valid(hdev, data))
+ return;
+
if (status) {
- mgmt_pending_foreach(MGMT_OP_SET_ADVERTISING, hdev, true,
- cmd_status_rsp, &status);
+ mgmt_cmd_status(cmd->sk, cmd->hdev->id, cmd->opcode, status);
+ mgmt_pending_free(cmd);
return;
}
@@ -6250,8 +6345,7 @@ static void set_advertising_complete(struct hci_dev *hdev, void *data, int err)
else
hci_dev_clear_flag(hdev, HCI_ADVERTISING);
- mgmt_pending_foreach(MGMT_OP_SET_ADVERTISING, hdev, true, settings_rsp,
- &match);
+ settings_rsp(cmd, &match);
new_settings(hdev, match.sk);
@@ -6283,10 +6377,23 @@ static void set_advertising_complete(struct hci_dev *hdev, void *data, int err)
static int set_adv_sync(struct hci_dev *hdev, void *data)
{
struct mgmt_pending_cmd *cmd = data;
- struct mgmt_mode *cp = cmd->param;
- u8 val = !!cp->val;
+ struct mgmt_mode cp;
+ u8 val;
- if (cp->val == 0x02)
+ mutex_lock(&hdev->mgmt_pending_lock);
+
+ if (!__mgmt_pending_listed(hdev, cmd)) {
+ mutex_unlock(&hdev->mgmt_pending_lock);
+ return -ECANCELED;
+ }
+
+ memcpy(&cp, cmd->param, sizeof(cp));
+
+ mutex_unlock(&hdev->mgmt_pending_lock);
+
+ val = !!cp.val;
+
+ if (cp.val == 0x02)
hci_dev_set_flag(hdev, HCI_ADVERTISING_CONNECTABLE);
else
hci_dev_clear_flag(hdev, HCI_ADVERTISING_CONNECTABLE);
@@ -8039,10 +8146,6 @@ static void read_local_oob_ext_data_complete(struct hci_dev *hdev, void *data,
u8 status = mgmt_status(err);
u16 eir_len;
- if (err == -ECANCELED ||
- cmd != pending_find(MGMT_OP_READ_LOCAL_OOB_EXT_DATA, hdev))
- return;
-
if (!status) {
if (!skb)
status = MGMT_STATUS_FAILED;
@@ -8149,7 +8252,7 @@ done:
kfree_skb(skb);
kfree(mgmt_rp);
- mgmt_pending_remove(cmd);
+ mgmt_pending_free(cmd);
}
static int read_local_ssp_oob_req(struct hci_dev *hdev, struct sock *sk,
@@ -8158,7 +8261,7 @@ static int read_local_ssp_oob_req(struct hci_dev *hdev, struct sock *sk,
struct mgmt_pending_cmd *cmd;
int err;
- cmd = mgmt_pending_add(sk, MGMT_OP_READ_LOCAL_OOB_EXT_DATA, hdev,
+ cmd = mgmt_pending_new(sk, MGMT_OP_READ_LOCAL_OOB_EXT_DATA, hdev,
cp, sizeof(*cp));
if (!cmd)
return -ENOMEM;
diff --git a/net/bluetooth/mgmt_config.c b/net/bluetooth/mgmt_config.c
index 6ef701c27da4..c4063d200c0a 100644
--- a/net/bluetooth/mgmt_config.c
+++ b/net/bluetooth/mgmt_config.c
@@ -13,13 +13,13 @@
#define HDEV_PARAM_U16(_param_name_) \
struct {\
- struct mgmt_tlv entry; \
+ struct mgmt_tlv_hdr entry; \
__le16 value; \
} __packed _param_name_
#define HDEV_PARAM_U8(_param_name_) \
struct {\
- struct mgmt_tlv entry; \
+ struct mgmt_tlv_hdr entry; \
__u8 value; \
} __packed _param_name_
diff --git a/net/bluetooth/mgmt_util.c b/net/bluetooth/mgmt_util.c
index a88a07da3947..aa7b5585cb26 100644
--- a/net/bluetooth/mgmt_util.c
+++ b/net/bluetooth/mgmt_util.c
@@ -320,6 +320,52 @@ void mgmt_pending_remove(struct mgmt_pending_cmd *cmd)
mgmt_pending_free(cmd);
}
+bool __mgmt_pending_listed(struct hci_dev *hdev, struct mgmt_pending_cmd *cmd)
+{
+ struct mgmt_pending_cmd *tmp;
+
+ lockdep_assert_held(&hdev->mgmt_pending_lock);
+
+ if (!cmd)
+ return false;
+
+ list_for_each_entry(tmp, &hdev->mgmt_pending, list) {
+ if (cmd == tmp)
+ return true;
+ }
+
+ return false;
+}
+
+bool mgmt_pending_listed(struct hci_dev *hdev, struct mgmt_pending_cmd *cmd)
+{
+ bool listed;
+
+ mutex_lock(&hdev->mgmt_pending_lock);
+ listed = __mgmt_pending_listed(hdev, cmd);
+ mutex_unlock(&hdev->mgmt_pending_lock);
+
+ return listed;
+}
+
+bool mgmt_pending_valid(struct hci_dev *hdev, struct mgmt_pending_cmd *cmd)
+{
+ bool listed;
+
+ if (!cmd)
+ return false;
+
+ mutex_lock(&hdev->mgmt_pending_lock);
+
+ listed = __mgmt_pending_listed(hdev, cmd);
+ if (listed)
+ list_del(&cmd->list);
+
+ mutex_unlock(&hdev->mgmt_pending_lock);
+
+ return listed;
+}
+
void mgmt_mesh_foreach(struct hci_dev *hdev,
void (*cb)(struct mgmt_mesh_tx *mesh_tx, void *data),
void *data, struct sock *sk)
diff --git a/net/bluetooth/mgmt_util.h b/net/bluetooth/mgmt_util.h
index 024e51dd6937..bcba8c9d8952 100644
--- a/net/bluetooth/mgmt_util.h
+++ b/net/bluetooth/mgmt_util.h
@@ -65,6 +65,9 @@ struct mgmt_pending_cmd *mgmt_pending_new(struct sock *sk, u16 opcode,
void *data, u16 len);
void mgmt_pending_free(struct mgmt_pending_cmd *cmd);
void mgmt_pending_remove(struct mgmt_pending_cmd *cmd);
+bool __mgmt_pending_listed(struct hci_dev *hdev, struct mgmt_pending_cmd *cmd);
+bool mgmt_pending_listed(struct hci_dev *hdev, struct mgmt_pending_cmd *cmd);
+bool mgmt_pending_valid(struct hci_dev *hdev, struct mgmt_pending_cmd *cmd);
void mgmt_mesh_foreach(struct hci_dev *hdev,
void (*cb)(struct mgmt_mesh_tx *mesh_tx, void *data),
void *data, struct sock *sk);
diff --git a/net/bluetooth/sco.c b/net/bluetooth/sco.c
index d382d980fd9a..ab0cf442d57b 100644
--- a/net/bluetooth/sco.c
+++ b/net/bluetooth/sco.c
@@ -498,6 +498,13 @@ static void sco_sock_kill(struct sock *sk)
BT_DBG("sk %p state %d", sk, sk->sk_state);
+ /* Sock is dead, so set conn->sk to NULL to avoid possible UAF */
+ if (sco_pi(sk)->conn) {
+ sco_conn_lock(sco_pi(sk)->conn);
+ sco_pi(sk)->conn->sk = NULL;
+ sco_conn_unlock(sco_pi(sk)->conn);
+ }
+
/* Kill poor orphan */
bt_sock_unlink(&sco_sk_list, sk);
sock_set_flag(sk, SOCK_DEAD);
generated by cgit v1.2.3 (git 2.46.0) at 2025-10-03 15:29:09 +0000