CVE-2026-68391

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-2026-68392

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-2026-68394

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...

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

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...

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...

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...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerabilities have been resolved: Bluetooth: MGMT: Fixed a memory leak in setsspcomplete. The memory leak was fixed in setsspcomplete, where the mgmtpendingcmd structures are not freed after they are removed from the pending list. Commit 302a1f674c00 “Bluetoot...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerabilities have been resolved: Bluetooth: MGMT: Fixed possible UAFs This attempt to fix possible UAFs is due to the fact that the struct mgmtpending is freed while it is still being processed, as seen in the following trace. To address this issue,...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: MGMT: Fixed out-of-band OOB access during the parseadvmonitorpattern function execution. In the parseadvmonitorpattern function, the value of the length variable is currently limited to HCIMAXEXTADLENGTH251. The size o...

CVE-2026-64433

A flaw was found in the Linux kernel's Bluetooth Management MGMT subsystem. A use-after-free UAF vulnerability exists in the adddevicecomplete function. This occurs because the function does not properly acquire a lock before accessing connection parameters, allowing a concurrent device removal...

CVE-2026-64433

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: MGMT: Fix UAF of hciconnparams in adddevicecomplete adddevicecomplete runs from the hcicmdsyncwork kworker, which holds only hcireqsynclock and not hcidevlock. It calls hciconnparamslookup and then dereferences the...

UBUNTU-CVE-2026-64433

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: MGMT: Fix UAF of hciconnparams in adddevicecomplete adddevicecomplete runs from the hcicmdsyncwork kworker, which holds only hcireqsynclock and not hcidevlock. It calls hciconnparamslookup and then dereferences the...

CVE-2026-64433

Summary: CVE-2026-64433 affects the Linux kernel Bluetooth MGMT path, where add_device_complete() can perform a use-after-free due to missing locking around hci_conn_params_lookup() and access to params->flags. A concurrent MGMT_OP_REMOVE_DEVICE under hci_dev_lock can free the looked-up hci_co...

EUVD-2026-48777

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: MGMT: Fix UAF of hciconnparams in adddevicecomplete adddevicecomplete runs from the hcicmdsyncwork kworker, which holds only hcireqsynclock and not hcidevlock. It calls hciconnparamslookup and then dereferences the...

CVE-2026-64433

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: MGMT: Fix UAF of hciconnparams in adddevicecomplete adddevicecomplete runs from the hcicmdsyncwork kworker, which holds only hcireqsynclock and not hcidevlock. It calls hciconnparamslookup and then dereferences the...

SUSE CVE-2026-64126

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: MGMT: validate Add Extended Advertising Data length MGMTOPADDEXTADVDATA is registered as a variable-length command, with MGMTADDEXTADVDATASIZE as the fixed header size. The handler then uses cp-advdatalen and...

CVE-2026-64126

A flaw was found in the Linux kernel's Bluetooth Management MGMT subsystem. The handler for the MGMTOPADDEXTADVDATA command does not correctly validate the lengths of extended advertising data and scan response data against the overall command payload. This oversight allows a local attacker with...

Linux Distros Unpatched Vulnerability : CVE-2026-64126

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Bluetooth: MGMT: validate Add Extended Advertising Data length MGMTOPADDEXTADVDATA is registered as a variable-length command, with MGMTADDEXTADVDATASIZE as the...