CVE-2026-85034

The Bluetooth host's GATT client passed the value of a received Handle Value Notification, Handle Value Indication or Multiple Handle Value Notification to btgattsubscribeparams::notify callbacks using only the length derived from the received ATT PDU. btattrecv in subsys/bluetooth/host/att.c...

CVE-2026-85033

The AVRCP Target role in subsys/bluetooth/host/classic/avrcp.c keeps its vendor-dependent response transmit state in a per-connection object selected by connection index getavrcptg, with the per-transfer context tid, sentlen, and the BTAVRCPTGFLAGTXONGOING flag stored in the userdata of the queue...

CVE-2026-85034

The Zephyr RTOS Bluetooth host's GATT client is vulnerable to an out-of-bounds write when processing Handle Value Notifications , Indications , or Multiple Handle Value Notifications . The root cause is that bt_att_recv() fails to enforce the negotiated ATT MTU, and the L2CAP channel lacks an rx....

CVE-2026-85034 Out-of-bounds write in the Bluetooth GATT client: oversized notification and indication values delivered to subscribers

The Bluetooth host's GATT client passed the value of a received Handle Value Notification, Handle Value Indication or Multiple Handle Value Notification to btgattsubscribeparams::notify callbacks using only the length derived from the received ATT PDU. btattrecv in subsys/bluetooth/host/att.c...

EUVD-2026-115822

The Bluetooth host's GATT client passed the value of a received Handle Value Notification, Handle Value Indication or Multiple Handle Value Notification to btgattsubscribeparams::notify callbacks using only the length derived from the received ATT PDU. btattrecv in subsys/bluetooth/host/att.c...

EUVD-2026-115821

The AVRCP Target role in subsys/bluetooth/host/classic/avrcp.c keeps its vendor-dependent response transmit state in a per-connection object selected by connection index getavrcptg, with the per-transfer context tid, sentlen, and the BTAVRCPTGFLAGTXONGOING flag stored in the userdata of the queue...

Linux Distros Unpatched Vulnerability : CVE-2026-82388

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - bthfphfconnect in subsys/bluetooth/host/classic/hfphf.c allocates the per-connection HFP Hands-Free object with hfphfcreate, which starts an SDP discovery by...

Linux Distros Unpatched Vulnerability : CVE-2026-81039

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - The Bluetooth host pre-allocates a btconn object a reservation from the fixed aclconns pool for every connectable advertising set it starts, in leadvstartaddcon...

CVE-2026-81039

The Bluetooth host pre-allocates a btconn object a "reservation" from the fixed aclconns pool for every connectable advertising set it starts, in leadvstartaddconn in subsys/bluetooth/host/adv.c. When an incoming peripheral connection completes, findpendingconnect in subsys/bluetooth/host/hcicore...

CVE-2026-81039

The Bluetooth host pre-allocates a btconn object a "reservation" from the fixed aclconns pool for every connectable advertising set it starts, in leadvstartaddconn in subsys/bluetooth/host/adv.c. When an incoming peripheral connection completes, findpendingconnect in subsys/bluetooth/host/hcicore...

UBUNTU-CVE-2026-81039

The Bluetooth host pre-allocates a btconn object a "reservation" from the fixed aclconns pool for every connectable advertising set it starts, in leadvstartaddconn in subsys/bluetooth/host/adv.c. When an incoming peripheral connection completes, findpendingconnect in subsys/bluetooth/host/hcicore...

EUVD-2026-109971

The Bluetooth host pre-allocates a btconn object a "reservation" from the fixed aclconns pool for every connectable advertising set it starts, in leadvstartaddconn in subsys/bluetooth/host/adv.c. When an incoming peripheral connection completes, findpendingconnect in subsys/bluetooth/host/hcicore...

PT-2026-123418

The Bluetooth host pre-allocates a bt conn object a "reservation" from the fixed acl conns pool for every connectable advertising set it starts, in le adv start add conn in subsys/bluetooth/host/adv.c. When an incoming peripheral connection completes, find pending connect in...

EUVD-2026-107483

The Bluetooth Classic A2DP host stores a codec Information Element IE in struct bta2dpcodecie, a one-byte len field plus a fixed 8-byte codecie array. When an AVDTP peer sent a codec IE longer than 8 bytes, a2dpprocessconfigind in subsys/bluetooth/host/classic/a2dp.c copied only the first 8 bytes...

PT-2026-120772

The Bluetooth Classic A2DP host stores a codec Information Element IE in struct bt a2dp codec ie, a one-byte len field plus a fixed 8-byte codec ie array. When an AVDTP peer sent a codec IE longer than 8 bytes, a2dp process config ind in subsys/bluetooth/host/classic/a2dp.c copied only the first ...

EUVD-2026-98924

The AVDTP signalling layer arms a 6-second command timeout AVDTPTIMEOUT in avdtpsendcmd whenever the local device issues an AVDTP request. Every response handler in subsys/bluetooth/host/classic/avdtp.c cancels session-timeoutwork before clearing the pending request, but btavdtpl2capdisconnected...

CVE-2026-19939: Expired Pointer Dereference

The AVDTP signalling layer arms a 6-second command timeout AVDTPTIMEOUT in avdtpsendcmd whenever the local device issues an AVDTP request. Every response handler in subsys/bluetooth/host/classic/avdtp.c cancels session-timeoutwork before clearing the pending request, but btavdtpl2capdisconnected...

PT-2026-111724

The Bluetooth Classic Hands-Free Profile Audio Gateway implementation in subsys/bluetooth/host/classic/hfp ag.c keeps its struct bt hfp ag objects in a static pool indexed by ACL connection index. On link teardown, hfp ag disconnected cancels ag-tx work and the per-call work items and then clears...

CVE-2026-19940: Use After Free

The Bluetooth Classic Hands-Free Profile Audio Gateway implementation in subsys/bluetooth/host/classic/hfpag.c keeps its struct bthfpag objects in a static pool indexed by ACL connection index. On link teardown, hfpagdisconnected cancels ag-txwork and the per-call work items and then clears...

CVE-2026-19938 Use-after-free of an ATT PDU buffer when signing an outgoing Bluetooth ATT Signed Write Command fails

The Bluetooth host's ATT transmit path releases a buffer it does not own when signing fails. chansend in subsys/bluetooth/host/att.c documents and every other error exit implements the contract that on failure the caller retains ownership of the netbuf; the BTATTOPSIGNEDWRITECMD branch instead...