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Diffstat (limited to 'net/bluetooth')
-rw-r--r--net/bluetooth/a2mp.c22
-rw-r--r--net/bluetooth/hci_conn.c17
-rw-r--r--net/bluetooth/hci_event.c70
-rw-r--r--net/bluetooth/l2cap_core.c7
-rw-r--r--net/bluetooth/l2cap_sock.c14
-rw-r--r--net/bluetooth/mgmt.c7
6 files changed, 90 insertions, 47 deletions
diff --git a/net/bluetooth/a2mp.c b/net/bluetooth/a2mp.c
index aad994edd3bb..cd20c35daa6c 100644
--- a/net/bluetooth/a2mp.c
+++ b/net/bluetooth/a2mp.c
@@ -233,6 +233,9 @@ static int a2mp_discover_rsp(struct amp_mgr *mgr, struct sk_buff *skb,
struct a2mp_info_req req;
found = true;
+
+ memset(&req, 0, sizeof(req));
+
req.id = cl->id;
a2mp_send(mgr, A2MP_GETINFO_REQ, __next_ident(mgr),
sizeof(req), &req);
@@ -312,6 +315,8 @@ static int a2mp_getinfo_req(struct amp_mgr *mgr, struct sk_buff *skb,
if (!hdev || hdev->dev_type != HCI_AMP) {
struct a2mp_info_rsp rsp;
+ memset(&rsp, 0, sizeof(rsp));
+
rsp.id = req->id;
rsp.status = A2MP_STATUS_INVALID_CTRL_ID;
@@ -355,6 +360,8 @@ static int a2mp_getinfo_rsp(struct amp_mgr *mgr, struct sk_buff *skb,
if (!ctrl)
return -ENOMEM;
+ memset(&req, 0, sizeof(req));
+
req.id = rsp->id;
a2mp_send(mgr, A2MP_GETAMPASSOC_REQ, __next_ident(mgr), sizeof(req),
&req);
@@ -383,6 +390,8 @@ static int a2mp_getampassoc_req(struct amp_mgr *mgr, struct sk_buff *skb,
struct a2mp_amp_assoc_rsp rsp;
rsp.id = req->id;
+ memset(&rsp, 0, sizeof(rsp));
+
if (tmp) {
rsp.status = A2MP_STATUS_COLLISION_OCCURED;
amp_mgr_put(tmp);
@@ -471,7 +480,6 @@ static int a2mp_createphyslink_req(struct amp_mgr *mgr, struct sk_buff *skb,
struct a2mp_cmd *hdr)
{
struct a2mp_physlink_req *req = (void *) skb->data;
-
struct a2mp_physlink_rsp rsp;
struct hci_dev *hdev;
struct hci_conn *hcon;
@@ -482,6 +490,8 @@ static int a2mp_createphyslink_req(struct amp_mgr *mgr, struct sk_buff *skb,
BT_DBG("local_id %d, remote_id %d", req->local_id, req->remote_id);
+ memset(&rsp, 0, sizeof(rsp));
+
rsp.local_id = req->remote_id;
rsp.remote_id = req->local_id;
@@ -560,6 +570,8 @@ static int a2mp_discphyslink_req(struct amp_mgr *mgr, struct sk_buff *skb,
BT_DBG("local_id %d remote_id %d", req->local_id, req->remote_id);
+ memset(&rsp, 0, sizeof(rsp));
+
rsp.local_id = req->remote_id;
rsp.remote_id = req->local_id;
rsp.status = A2MP_STATUS_SUCCESS;
@@ -682,6 +694,8 @@ static int a2mp_chan_recv_cb(struct l2cap_chan *chan, struct sk_buff *skb)
if (err) {
struct a2mp_cmd_rej rej;
+ memset(&rej, 0, sizeof(rej));
+
rej.reason = cpu_to_le16(0);
hdr = (void *) skb->data;
@@ -905,6 +919,8 @@ void a2mp_send_getinfo_rsp(struct hci_dev *hdev)
BT_DBG("%s mgr %p", hdev->name, mgr);
+ memset(&rsp, 0, sizeof(rsp));
+
rsp.id = hdev->id;
rsp.status = A2MP_STATUS_INVALID_CTRL_ID;
@@ -1002,6 +1018,8 @@ void a2mp_send_create_phy_link_rsp(struct hci_dev *hdev, u8 status)
if (!mgr)
return;
+ memset(&rsp, 0, sizeof(rsp));
+
hs_hcon = hci_conn_hash_lookup_state(hdev, AMP_LINK, BT_CONNECT);
if (!hs_hcon) {
rsp.status = A2MP_STATUS_UNABLE_START_LINK_CREATION;
@@ -1034,6 +1052,8 @@ void a2mp_discover_amp(struct l2cap_chan *chan)
mgr->bredr_chan = chan;
+ memset(&req, 0, sizeof(req));
+
req.mtu = cpu_to_le16(L2CAP_A2MP_DEFAULT_MTU);
req.ext_feat = 0;
a2mp_send(mgr, A2MP_DISCOVER_REQ, 1, sizeof(req), &req);
diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c
index 1d085eed72d0..e3cd81ce2a7b 100644
--- a/net/bluetooth/hci_conn.c
+++ b/net/bluetooth/hci_conn.c
@@ -1163,6 +1163,23 @@ int hci_conn_check_link_mode(struct hci_conn *conn)
return 0;
}
+ /* AES encryption is required for Level 4:
+ *
+ * BLUETOOTH CORE SPECIFICATION Version 5.2 | Vol 3, Part C
+ * page 1319:
+ *
+ * 128-bit equivalent strength for link and encryption keys
+ * required using FIPS approved algorithms (E0 not allowed,
+ * SAFER+ not allowed, and P-192 not allowed; encryption key
+ * not shortened)
+ */
+ if (conn->sec_level == BT_SECURITY_FIPS &&
+ !test_bit(HCI_CONN_AES_CCM, &conn->flags)) {
+ bt_dev_err(conn->hdev,
+ "Invalid security: Missing AES-CCM usage");
+ return 0;
+ }
+
if (hci_conn_ssp_enabled(conn) &&
!test_bit(HCI_CONN_ENCRYPT, &conn->flags))
return 0;
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index 587b674bbcd6..ba12bf8de826 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -1133,6 +1133,9 @@ static void store_pending_adv_report(struct hci_dev *hdev, bdaddr_t *bdaddr,
{
struct discovery_state *d = &hdev->discovery;
+ if (len > HCI_MAX_AD_LENGTH)
+ return;
+
bacpy(&d->last_adv_addr, bdaddr);
d->last_adv_addr_type = bdaddr_type;
d->last_adv_rssi = rssi;
@@ -2490,7 +2493,7 @@ static void hci_auth_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
&cp);
} else {
clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
- hci_encrypt_cfm(conn, ev->status, 0x00);
+ hci_encrypt_cfm(conn, ev->status);
}
}
@@ -2576,22 +2579,7 @@ static void read_enc_key_size_complete(struct hci_dev *hdev, u8 status,
conn->enc_key_size = rp->key_size;
}
- if (conn->state == BT_CONFIG) {
- conn->state = BT_CONNECTED;
- hci_connect_cfm(conn, 0);
- hci_conn_drop(conn);
- } else {
- u8 encrypt;
-
- if (!test_bit(HCI_CONN_ENCRYPT, &conn->flags))
- encrypt = 0x00;
- else if (test_bit(HCI_CONN_AES_CCM, &conn->flags))
- encrypt = 0x02;
- else
- encrypt = 0x01;
-
- hci_encrypt_cfm(conn, 0, encrypt);
- }
+ hci_encrypt_cfm(conn, 0);
unlock:
hci_dev_unlock(hdev);
@@ -2638,27 +2626,23 @@ static void hci_encrypt_change_evt(struct hci_dev *hdev, struct sk_buff *skb)
clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
+ /* Check link security requirements are met */
+ if (!hci_conn_check_link_mode(conn))
+ ev->status = HCI_ERROR_AUTH_FAILURE;
+
if (ev->status && conn->state == BT_CONNECTED) {
if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING)
set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags);
+ /* Notify upper layers so they can cleanup before
+ * disconnecting.
+ */
+ hci_encrypt_cfm(conn, ev->status);
hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
hci_conn_drop(conn);
goto unlock;
}
- /* In Secure Connections Only mode, do not allow any connections
- * that are not encrypted with AES-CCM using a P-256 authenticated
- * combination key.
- */
- if (hci_dev_test_flag(hdev, HCI_SC_ONLY) &&
- (!test_bit(HCI_CONN_AES_CCM, &conn->flags) ||
- conn->key_type != HCI_LK_AUTH_COMBINATION_P256)) {
- hci_connect_cfm(conn, HCI_ERROR_AUTH_FAILURE);
- hci_conn_drop(conn);
- goto unlock;
- }
-
/* Try reading the encryption key size for encrypted ACL links */
if (!ev->status && ev->encrypt && conn->type == ACL_LINK) {
struct hci_cp_read_enc_key_size cp;
@@ -2688,14 +2672,7 @@ static void hci_encrypt_change_evt(struct hci_dev *hdev, struct sk_buff *skb)
}
notify:
- if (conn->state == BT_CONFIG) {
- if (!ev->status)
- conn->state = BT_CONNECTED;
-
- hci_connect_cfm(conn, ev->status);
- hci_conn_drop(conn);
- } else
- hci_encrypt_cfm(conn, ev->status, ev->encrypt);
+ hci_encrypt_cfm(conn, ev->status);
unlock:
hci_dev_unlock(hdev);
@@ -4779,6 +4756,11 @@ static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr,
return;
}
+ if (len > HCI_MAX_AD_LENGTH) {
+ pr_err_ratelimited("legacy adv larger than 31 bytes");
+ return;
+ }
+
/* Find the end of the data in case the report contains padded zero
* bytes at the end causing an invalid length value.
*
@@ -4839,7 +4821,7 @@ static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr,
*/
conn = check_pending_le_conn(hdev, bdaddr, bdaddr_type, type,
direct_addr);
- if (conn && type == LE_ADV_IND) {
+ if (conn && type == LE_ADV_IND && len <= HCI_MAX_AD_LENGTH) {
/* Store report for later inclusion by
* mgmt_device_connected
*/
@@ -4964,10 +4946,14 @@ static void hci_le_adv_report_evt(struct hci_dev *hdev, struct sk_buff *skb)
struct hci_ev_le_advertising_info *ev = ptr;
s8 rssi;
- rssi = ev->data[ev->length];
- process_adv_report(hdev, ev->evt_type, &ev->bdaddr,
- ev->bdaddr_type, NULL, 0, rssi,
- ev->data, ev->length);
+ if (ev->length <= HCI_MAX_AD_LENGTH) {
+ rssi = ev->data[ev->length];
+ process_adv_report(hdev, ev->evt_type, &ev->bdaddr,
+ ev->bdaddr_type, NULL, 0, rssi,
+ ev->data, ev->length);
+ } else {
+ bt_dev_err(hdev, "Dropping invalid advertising data");
+ }
ptr += sizeof(*ev) + ev->length + 1;
}
diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index c301b9debea7..df8cc639c46d 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -6683,9 +6683,10 @@ static int l2cap_data_rcv(struct l2cap_chan *chan, struct sk_buff *skb)
goto drop;
}
- if ((chan->mode == L2CAP_MODE_ERTM ||
- chan->mode == L2CAP_MODE_STREAMING) && sk_filter(chan->data, skb))
- goto drop;
+ if (chan->ops->filter) {
+ if (chan->ops->filter(chan, skb))
+ goto drop;
+ }
if (!control->sframe) {
int err;
diff --git a/net/bluetooth/l2cap_sock.c b/net/bluetooth/l2cap_sock.c
index 511a1da6ca97..7ff82f97e42c 100644
--- a/net/bluetooth/l2cap_sock.c
+++ b/net/bluetooth/l2cap_sock.c
@@ -1477,6 +1477,19 @@ static void l2cap_sock_suspend_cb(struct l2cap_chan *chan)
sk->sk_state_change(sk);
}
+static int l2cap_sock_filter(struct l2cap_chan *chan, struct sk_buff *skb)
+{
+ struct sock *sk = chan->data;
+
+ switch (chan->mode) {
+ case L2CAP_MODE_ERTM:
+ case L2CAP_MODE_STREAMING:
+ return sk_filter(sk, skb);
+ }
+
+ return 0;
+}
+
static const struct l2cap_ops l2cap_chan_ops = {
.name = "L2CAP Socket Interface",
.new_connection = l2cap_sock_new_connection_cb,
@@ -1491,6 +1504,7 @@ static const struct l2cap_ops l2cap_chan_ops = {
.set_shutdown = l2cap_sock_set_shutdown_cb,
.get_sndtimeo = l2cap_sock_get_sndtimeo_cb,
.alloc_skb = l2cap_sock_alloc_skb_cb,
+ .filter = l2cap_sock_filter,
};
static void l2cap_sock_destruct(struct sock *sk)
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index ba24f613c0fc..bca1408f815f 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -635,7 +635,8 @@ static u32 get_supported_settings(struct hci_dev *hdev)
if (lmp_ssp_capable(hdev)) {
settings |= MGMT_SETTING_SSP;
- settings |= MGMT_SETTING_HS;
+ if (IS_ENABLED(CONFIG_BT_HS))
+ settings |= MGMT_SETTING_HS;
}
if (lmp_sc_capable(hdev))
@@ -1645,6 +1646,10 @@ static int set_hs(struct sock *sk, struct hci_dev *hdev, void *data, u16 len)
BT_DBG("request for %s", hdev->name);
+ if (!IS_ENABLED(CONFIG_BT_HS))
+ return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_HS,
+ MGMT_STATUS_NOT_SUPPORTED);
+
status = mgmt_bredr_support(hdev);
if (status)
return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_HS, status);
generated by cgit v1.2.3 (git 2.25.1) at 2025-12-20 08:48:53 +0000