UBUNTU-CVE-2026-68085

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hciuart: clear HCIUARTSENDING when writework is canceled HCIUARTSENDING bit in txstate means writework is pending and blocks queueing it again. Currently this bit is not cleared when canceling the work in hciuartclose,...

CVE-2026-68085

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hciuart: clear HCIUARTSENDING when writework is canceled HCIUARTSENDING bit in txstate means writework is pending and blocks queueing it again. Currently this bit is not cleared when canceling the work in hciuartclose,...

EUVD-2026-55580

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: MGMT: revalidate LOADCONNPARAM queued update MGMTOPLOADCONNPARAM queues connupdatesync when a single parameter update changes an existing LE central connection. The queued work currently stores a borrowed hciconnparams...

CVE-2026-68394 Bluetooth: MGMT: revalidate LOAD_CONN_PARAM queued update

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: MGMT: revalidate LOADCONNPARAM queued update MGMTOPLOADCONNPARAM queues connupdatesync when a single parameter update changes an existing LE central connection. The queued work currently stores a borrowed hciconnparams...

CVE-2026-68394 Bluetooth: MGMT: revalidate LOAD_CONN_PARAM queued update

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: MGMT: revalidate LOADCONNPARAM queued update MGMTOPLOADCONNPARAM queues connupdatesync when a single parameter update changes an existing LE central connection. The queued work currently stores a borrowed hciconnparams...

CVE-2026-68394

In CVE-2026-68394, the Linux kernel Bluetooth MGMT path had a use-after-free in conn_update_sync triggered by MGMT_OP_LOAD_CONN_PARAM queuing a param update. The queued work incorrectly kept a borrowed hci_conn_params pointer; if userspace freed the entry before the callback ran, a use-after-free...

EUVD-2026-55579

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcisync: extend connhash lookup critical sections Using RCU-protected pointers outside the critical sections without refcount is incorrect and may result to UAF. Extend critical section to cover both hciconnhash lookup...

CVE-2026-68393 Bluetooth: hci_sync: extend conn_hash lookup critical sections

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcisync: extend connhash lookup critical sections Using RCU-protected pointers outside the critical sections without refcount is incorrect and may result to UAF. Extend critical section to cover both hciconnhash lookup...

CVE-2026-68393

The CVE-2026-68393 entry concerns the Linux kernel Bluetooth hci_sync component. The root cause is the use of RCU-protected pointers outside their critical sections without proper reference counting, which could lead to a Use-After-Free (UAF). The fix extends the critical section to cover both th...

CVE-2026-68392 Bluetooth: mgmt: fix locking in unpair_device/disconnect_sync

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: mgmt: fix locking in unpairdevice/disconnectsync Dereferencing RCU-protected pointers outside critical sections is invalid and may lead to UAF. Take hdev-lock for hciconn lookup and hciabortconn. Don't use RCU to ensur...

EUVD-2026-55578

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: mgmt: fix locking in unpairdevice/disconnectsync Dereferencing RCU-protected pointers outside critical sections is invalid and may lead to UAF. Take hdev-lock for hciconn lookup and hciabortconn. Don't use RCU to ensur...

CVE-2026-68392 Bluetooth: mgmt: fix locking in unpair_device/disconnect_sync

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: mgmt: fix locking in unpairdevice/disconnectsync Dereferencing RCU-protected pointers outside critical sections is invalid and may lead to UAF. Take hdev-lock for hciconn lookup and hciabortconn. Don't use RCU to ensur...

CVE-2026-68392

Summary: CVE-2026-68392 affects the Linux kernel Bluetooth management path. The vulnerability arises from dereferencing RCU-protected pointers outside critical sections during unpair_device/disconnect_sync, enabling a Use-After-Free (UAF) scenario. The fix targets the critical section handling fo...

CVE-2026-68391 Bluetooth: mgmt: hold reference for hci_conn in mgmt_pending_cmds

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: mgmt: hold reference for hciconn in mgmtpendingcmds Dereferencing RCU-protected pointers outside critical sections is invalid and may lead to UAF. Use of hciconn in hcisync callbacks also needs to hold refcount to avoi...

CVE-2026-68391

CVE-2026-68391 affects the Linux kernel Bluetooth management path, specifically the mgmt_pending_cmds handling of hci_conn references. The issue is a Use-After-Free risk from dereferencing RCU-protected pointers outside critical sections and from using hci_conn in hci_sync callbacks without holdi...

CVE-2026-68391 Bluetooth: mgmt: hold reference for hci_conn in mgmt_pending_cmds

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: mgmt: hold reference for hciconn in mgmtpendingcmds Dereferencing RCU-protected pointers outside critical sections is invalid and may lead to UAF. Use of hciconn in hcisync callbacks also needs to hold refcount to avoi...

EUVD-2026-55577

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: mgmt: hold reference for hciconn in mgmtpendingcmds Dereferencing RCU-protected pointers outside critical sections is invalid and may lead to UAF. Use of hciconn in hcisync callbacks also needs to hold refcount to avoi...

CVE-2026-68390 Bluetooth: hci_sync: hold hdev->lock for hci_conn_params lookups

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcisync: hold hdev-lock for hciconnparams lookups hciconnparamslookup requires hdev-lock be held, otherwise the list iteration or param access is not safe. Hold hdev-lock for params lookups in hcisync...

CVE-2026-68390 Bluetooth: hci_sync: hold hdev->lock for hci_conn_params lookups

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcisync: hold hdev-lock for hciconnparams lookups hciconnparamslookup requires hdev-lock be held, otherwise the list iteration or param access is not safe. Hold hdev-lock for params lookups in hcisync...

EUVD-2026-55576

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcisync: hold hdev-lock for hciconnparams lookups hciconnparamslookup requires hdev-lock be held, otherwise the list iteration or param access is not safe. Hold hdev-lock for params lookups in hcisync...