CVE-2026-90253

Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: MGMT: free the mesh send cancel command when it is cancelled mesh_send_cancel() queues the pending command with a NULL destroy callback, so it is only freed if send_cancel() runs. A cancelled entry is leaked, as _hci_cmd_sync_cancel_entry() does not release entry->data when there is no destroy callback, and hci_cmd_sync_clear() cancels every pending entry when the controller is unregistered. Nothing else reclaims it either: mgmt_pending_new() does not put the command on hdev->mgmt_pending. The leak also pins the socket reference taken by mgmt_pending_new(), so the mgmt socket is never released. Free the command from a destroy callback.

References

• https://git.kernel.org/stable/c/05438d338a875a9daa08ca3f6a35b4480cf13de4
• https://git.kernel.org/stable/c/3c742feda8fcabf741a17bcf668b63c8f606f9c5
• https://git.kernel.org/stable/c/416fabca9b7237b76aa9cafcf8c497b8ac00d88c
• https://git.kernel.org/stable/c/88e30d036d777b00aed42bd35000de23ff40910c
• https://git.kernel.org/stable/c/b609341ee56967d9a45845ff26f79336d2114b55