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CVE-2026-90253

Unknown

Last modified

CVE-2026-90253 is a vulnerability of currently unknown severity. 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.

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.

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= b338d91703fae6f6afd67f3f75caa3b8f36ddef3, < b609341ee56967d9a45845ff26f79336d2114b55; >= b338d91703fae6f6afd67f3f75caa3b8f36ddef3, < 416fabca9b7237b76aa9cafcf8c497b8ac00d88c; >= b338d91703fae6f6afd67f3f75caa3b8f36ddef3, < 88e30d036d777b00aed42bd35000de23ff40910c; >= b338d91703fae6f6afd67f3f75caa3b8f36ddef3, < 05438d338a875a9daa08ca3f6a35b4480cf13de4; >= b338d91703fae6f6afd67f3f75caa3b8f36ddef3, < fa46d428c014e7b72a18634679815670418e67dc; >= b338d91703fae6f6afd67f3f75caa3b8f36ddef3, < 3c742feda8fcabf741a17bcf668b63c8f606f9c5
LinuxLinux6.1

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-90253?
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.
How severe is CVE-2026-90253?
Severity scoring for CVE-2026-90253 is pending analysis.
How do I fix CVE-2026-90253?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST