The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - Bluetooth: hci_conn: Fix null ptr deref in hci_abort_conn() hci_abort_conn() read     hci_skb_event(hdev->sent_cmd) when a connection was pending, but hdev->sent_cmd can be NULL while     req_status is still HCI_REQ_PEND, leading to a NULL pointer dereference and a general protection fault     from the hci_rx_work() receive path. Instead of inspecting hdev->sent_cmd, track the in-flight create     connection command with a new per-connection HCI_CONN_CREATE flag and route all cancellation through     hci_cancel_connect_sync(), which dispatches to a dedicated per-type cancel function. The create command is     in exactly one of two states: still queued, or in flight. The cancel function holds cmd_sync_work_lock     across the whole decision: the worker takes this lock to dequeue every entry, so while it is held a queued     command cannot start running and an in-flight command cannot complete and let the next command become     pending. This keeps the flag test and hci_cmd_sync_cancel() atomic with respect to the worker, so a queued     command is simply dequeued, and an in-flight command owned by this connection is cancelled without the     risk of cancelling an unrelated command that became pending in the meantime. CIS uses the same flag     mechanism via HCI_CONN_CREATE_CIS but cannot be dequeued per-connection. hci_acl_create_conn_sync() and     hci_le_create_conn_sync() clear HCI_CONN_CREATE after the create command completes, but the command status     handler can free conn via hci_conn_del() (for example when the controller rejects the connection) while     the worker is still blocked on the connection complete event. Hold a reference on conn across the create     command so the flag can be cleared without a use-after-free. (CVE-2026-64405)

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Linux Distros Unpatched Vulnerability : CVE-2026-64405

medium Nessus Plugin ID 329820

Version 1.16