CVE-2026-90253

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxb338d91703fae6f6afd67f3f75caa3b8f36ddef3 < b609341ee56967d9a45845ff26f79336d2114b55affected
LinuxLinuxb338d91703fae6f6afd67f3f75caa3b8f36ddef3 < 416fabca9b7237b76aa9cafcf8c497b8ac00d88caffected
LinuxLinuxb338d91703fae6f6afd67f3f75caa3b8f36ddef3 < 88e30d036d777b00aed42bd35000de23ff40910caffected
LinuxLinuxb338d91703fae6f6afd67f3f75caa3b8f36ddef3 < 05438d338a875a9daa08ca3f6a35b4480cf13de4affected
LinuxLinuxb338d91703fae6f6afd67f3f75caa3b8f36ddef3 < fa46d428c014e7b72a18634679815670418e67dcaffected
LinuxLinuxb338d91703fae6f6afd67f3f75caa3b8f36ddef3 < 3c742feda8fcabf741a17bcf668b63c8f606f9c5affected
LinuxLinux6.1affected
LinuxLinux0 < 6.1unaffected
LinuxLinux6.1.188 <= 6.1.*unaffected
LinuxLinux6.6.157 <= 6.6.*unaffected
LinuxLinux6.12.110 <= 6.12.*unaffected
LinuxLinux6.18.52 <= 6.18.*unaffected
LinuxLinux7.2.6 <= 7.2.*unaffected
LinuxLinux7.3-rc1 <= *unaffected

Weaknesses

References