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Bluetooth: Host: Ensure only connected peers affect CCC value #80988

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merged 1 commit into from
Nov 8, 2024
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Bluetooth: Host: Ensure only connected peers affect CCC value #80988

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13 changes: 11 additions & 2 deletions subsys/bluetooth/host/gatt.c
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Original file line number Diff line number Diff line change
Expand Up @@ -2195,8 +2195,17 @@ static void gatt_ccc_changed(const struct bt_gatt_attr *attr,
uint16_t value = 0x0000;

for (i = 0; i < ARRAY_SIZE(ccc->cfg); i++) {
if (ccc->cfg[i].value > value) {
value = ccc->cfg[i].value;
/* `ccc->value` shall be a summary of connected peers' CCC values, but
* `ccc->cfg` can contain entries for bonded but not connected peers.
*/
struct bt_conn *conn = bt_conn_lookup_addr_le(ccc->cfg[i].id, &ccc->cfg[i].peer);

if (conn) {
if (ccc->cfg[i].value > value) {
value = ccc->cfg[i].value;
}

bt_conn_unref(conn);
}
}

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