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...

Linux Distros Unpatched Vulnerability : CVE-2026-64433

"The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Bluetooth: MGMT: Fix UAF of hciconnparams in adddevicecomplete adddevicecomplete runs from the hcicmdsyncwork kworker, which holds only hcireqsynclock and not...

Linux Distros Unpatched Vulnerability : CVE-2026-53072

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Bluetooth: fix locking in hciconnrequestevt with HCIPROTODEFER When protocol sets HCIPROTODEFER, hciconnrequestevt calls hciconnectcfmconn without hdev-lock...

CVE-2026-53072 Bluetooth: fix locking in hci_conn_request_evt() with HCI_PROTO_DEFER

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: fix locking in hciconnrequestevt with HCIPROTODEFER When protocol sets HCIPROTODEFER, hciconnrequestevt calls hciconnectcfmconn without hdev-lock. Generally hciconnectcfm assumes it is held, and if conn is deleted...

CVE-2026-53072 Bluetooth: fix locking in hci_conn_request_evt() with HCI_PROTO_DEFER

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: fix locking in hciconnrequestevt with HCIPROTODEFER When protocol sets HCIPROTODEFER, hciconnrequestevt calls hciconnectcfmconn without hdev-lock. Generally hciconnectcfm assumes it is held, and if conn is deleted...

Unity Linux 20.1070e Security Update: kernel (UTSA-2026-005561)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-005561 advisory. In the Linux kernel, the following vulnerability has been resolved: Bluetooth: MGMT: Add error handling to pairdevice hciconnparamsadd never checks for a NULL value...

kernel: Bluetooth: hci_event: Fix UAF in hci_conn_tx_dequeue

A flaw was discovered in the Bluetooth subsystem of the Linux kernel. When processing a HCIEVNUMCOMPPKTS event, the function hciconntxdequeue did not properly hold or release the hdev device lock, which may lead to a use-after-free of the connection structure...

ALSA-2025:22854 Moderate: kernel security update

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: cifs: Fix oops due to uninitialised variable CVE-2025-38737 kernel: can: j1939: implement NETDEVUNREGISTER notification handler CVE-2025-39925 kernel: Bluetooth: hcievent: Fix UAF in...

Linux Distros Unpatched Vulnerability : CVE-2025-39983

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcievent: Fix UAF in hciconntxdequeue This fixes the following UAF caused by not...

CVE-2025-39983

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcievent: Fix UAF in hciconntxdequeue This fixes the following UAF caused by not properly locking hdev when processing HCIEVNUMCOMPPKTS: BUG: KASAN: slab-use-after-free in hciconntxdequeue+0x1be/0x220...

CVE-2025-39983 Bluetooth: hci_event: Fix UAF in hci_conn_tx_dequeue

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcievent: Fix UAF in hciconntxdequeue This fixes the following UAF caused by not properly locking hdev when processing HCIEVNUMCOMPPKTS: BUG: KASAN: slab-use-after-free in hciconntxdequeue+0x1be/0x220...

CVE-2025-39983 Bluetooth: hci_event: Fix UAF in hci_conn_tx_dequeue

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcievent: Fix UAF in hciconntxdequeue This fixes the following UAF caused by not properly locking hdev when processing HCIEVNUMCOMPPKTS: BUG: KASAN: slab-use-after-free in hciconntxdequeue+0x1be/0x220...

PT-2025-42258

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 6.16-rc7 Description The Linux kernel contains a use-after-free flaw within the Bluetooth stack, specifically in the hci conn tx dequeue function. This issue arises from improper locking of the hdev structure whe...

DEBIAN-CVE-2023-53374

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hciconn: fail SCO/ISO via hciconnfailed if ACL gone early Not calling hcidisconnectcfm before deleting conn referred to by a socket generally results to use-after-free. When cleaning up SCO connections when the parent...

CVE-2023-53252 Bluetooth: use RCU for hci_conn_params and iterate safely in hci_sync

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: use RCU for hciconnparams and iterate safely in hcisync hciupdateacceptlistsync iterates over hdev-pendleconns and hdev-pendlereports, and waits for controller events in the loop body, without holding hdev lock...

CVE-2023-53252

The CVE-2023-53252 entry applies to the Linux kernel Bluetooth stack. The vulnerability arises in hci_update_accept_list_sync where hci_conn_params/hci_sync lists are iterated while the lists can be modified (e.g., by le_scan_cleanup) without holding the device lock, risking an invalid list curso...

AZL-62630 CVE-2024-56591 affecting package kernel 6.6.126.1-1

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hciconn: Use disabledelayedworksync This makes use of disabledelayedworksync instead canceldelayedworksync as it not only cancel the ongoing work but also disables new submit which is disarable since the object holding...

AZL-48197 CVE-2024-43884 affecting package kernel for versions less than 6.6.51.1-5

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: MGMT: Add error handling to pairdevice hciconnparamsadd never checks for a NULL value and could lead to a NULL pointer dereference causing a crash. Fixed by adding error handling in the function...

Kernel: double free in hci_conn_cleanup of the bluetooth subsystem

A double-free vulnerability was found in the hciconncleanup in net/bluetooth/hciconn.c in the Linux Kernel. This issue may cause a denial of service or privilege escalation...

AZL-25956 CVE-2023-28464 affecting package kernel for versions less than 5.15.122.1-2

hciconncleanup in net/bluetooth/hciconn.c in the Linux kernel through 6.2.9 has a use-after-free observed in hciconnhashflush because of calls to hcidevput and hciconnput. There is a double free that may lead to privilege escalation...