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DEBIAN-CVE-2026-74511
No affected components available
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: mgmt: fix pending command UAF in EIR updates MGMT_OP_SET_LOCAL_NAME is handled asynchronously on powered controllers and can run set_name_sync(). When the controller is BR/EDR capable, set_name_sync() updates the local name and then rebuilds EIR data through eir_create(). The EIR builder walks hdev->uuids, but the UUID list can be changed and entries can be freed by MGMT_OP_ADD_UUID and MGMT_OP_REMOVE_UUID. pending_eir_or_class() is meant to serialize management commands that can change EIR or the class of device, but it did not include MGMT_OP_SET_LOCAL_NAME. In addition, it walked hdev->mgmt_pending without hdev->mgmt_pending_lock even though pending commands are added and removed under that mutex. A racing command completion can therefore remove and free a pending command while pending_eir_or_class() is still inspecting it, leading to a use-after-free in the pending-command list or allowing a local name update to rebuild EIR while UUID entries are being removed. Take hdev->mgmt_pending_lock while scanning hdev->mgmt_pending and treat MGMT_OP_SET_LOCAL_NAME as an EIR/class-affecting pending command on the powered asynchronous path. Check for a conflicting pending command before copying the new short name so a rejected SET_LOCAL_NAME request does not modify hdev->short_name.
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The vulnerability requires local access to the device to be exploited. It is easy for an attacker to exploit this vulnerability. An attacker needs basic access or low-level privileges. No user interaction is needed for the attacker to exploit this vulnerability. The impact is confined to the system where the vulnerability exists. There is a high impact on the confidentiality of the information. There is a high impact on the integrity of the data. There is a high impact on the availability of the system.
Exploitation activity has been observed. Apply available patches or mitigations urgently.
Probability that this vulnerability will be exploited in the wild within the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
- CVE-2026-74511Upstream
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