CVE-2026-19739 Bluetooth LE controller leaks a retained RX node when an unexpected LL Control PDU arrives during a Connection Update

The Bluetooth Link Layer control procedure code in subsys/bluetooth/controller/llsw/ullllcpconnupd.c retains the received RX node while a Connection Update / Connection Parameter procedure waits for its instant, so the node can later carry the host notification llcprxnoderetain, which marks it...

CVE-2026-19738

The Bluetooth Link Layer Control Procedure (LLCP) implementation in Zephyr RTOS contains a memory leak and reachable assertion during Connected Isochronous Stream (CIS) creation. Specifically, in subsys/bluetooth/controller/ll_sw/ull_llcp_cc.c, the "invalid PDU received" paths of llcp_rp_cc_rx() ...

CVE-2026-19738 Retained RX node leak and reachable assertion in Bluetooth Controller CIS Create procedures

The Bluetooth Link Layer Control Procedure LLCP implementation for Connected Isochronous Stream CIS creation retains an RX node ctx-noderef.rx, marked NODERXTYPERETAIN so it can later be reused as the host notification — on the peripheral while awaiting the Host's reply to an LLCISREQ, and on the...

CVE-2026-19739: Missing Release of Memory after Effective Lifetime

The Bluetooth Link Layer control procedure code in subsys/bluetooth/controller/llsw/ullllcpconnupd.c retains the received RX node while a Connection Update / Connection Parameter procedure waits for its instant, so the node can later carry the host notification llcprxnoderetain, which marks it...

CVE-2026-9263 Out-of-bounds read in Bluetooth Controller ISOAL framed RX reassembly leaks adjacent memory into host HCI ISO packets

The Zephyr Bluetooth controller ISO Adaptation Layer subsys/bluetooth/controller/llsw/isoal.c fails to validate the length field of a framed ISO PDU start segment. Per the Bluetooth specification a start segment sc=0 always carries a 3-byte timeoffset, so its segment-header len must be at least...

CVE-2026-9263 Out-of-bounds read in Bluetooth Controller ISOAL framed RX reassembly leaks adjacent memory into host HCI ISO packets

The Zephyr Bluetooth controller ISO Adaptation Layer subsys/bluetooth/controller/llsw/isoal.c fails to validate the length field of a framed ISO PDU start segment. Per the Bluetooth specification a start segment sc=0 always carries a 3-byte timeoffset, so its segment-header len must be at least...

CVE-2026-9263: Out-of-bounds Read

The Zephyr Bluetooth controller ISO Adaptation Layer subsys/bluetooth/controller/llsw/isoal.c fails to validate the length field of a framed ISO PDU start segment. Per the Bluetooth specification a start segment sc=0 always carries a 3-byte timeoffset, so its segment-header len must be at least...

PT-2026-53936

The Zephyr Bluetooth controller ISO Adaptation Layer subsys/bluetooth/controller/ll sw/isoal.c fails to validate the length field of a framed ISO PDU start segment. Per the Bluetooth specification a start segment sc=0 always carries a 3-byte time offset, so its segment-header len must be at least...

Bluetooth: hci_event: Fix OOB read and infinite loop in hci_le_create_big_complete_evt

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PT-2026-36439

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the Bluetooth component where the hci cmd sync queue once function fails to indicate whether a queue item was added. This prevents the caller from knowing if callbacks...

EUVD-2026-1849

Out-of-bounds Read vulnerability in Apache NimBLE HCI H4 driver. Specially crafted HCI event could lead to invalid memory read in H4 driver. This issue affects Apache NimBLE: through 1.8. This issue requires a broken or bogus Bluetooth controller and thus severity is considered low. Users are...

CVE-2025-53477

A NULL Pointer Dereference vulnerability exists in Apache NimBLE (versions through 1.8.0) within the NimBLE host HCI layer . The flaw is caused by a lack of validation of the HCI connection complete or HCI command TX buffers. Exploitation requires disabled asserts and a broken or bogus Bluetooth ...

CVE-2025-53470: Out-of-bounds Read

Out-of-bounds Read vulnerability in Apache NimBLE HCI H4 driver. Specially crafted HCI event could lead to invalid memory read in H4 driver. This issue affects Apache NimBLE: through 1.8. This issue requires a broken or bogus Bluetooth controller and thus severity is considered low. Users are...

CVE-2025-53477: NULL Pointer Dereference

NULL Pointer Dereference vulnerability in Apache Nimble. Missing validation of HCI connection complete or HCI command TX buffer could lead to NULL pointer dereference. This issue requires disabled asserts and broken or bogus Bluetooth controller and thus severity is considered low. This issue...

CVE-2025-64342 ESF-IDF's ESP32 Bluetooth Controller Has an Invalid Access Address Vulnerability

ESF-IDF is the Espressif Internet of Things IOT Development Framework. When the ESP32 is in advertising mode, if it receives a connection request containing an invalid Access Address AA of 0x00000000 or 0xFFFFFFFF, advertising may stop unexpectedly. In this case, the controller may incorrectly...

CVE-2025-47370

Technical details, affected product/versions, root cause, and fixes for CVE-2025-47370 are not publicly provided in the supplied documents. Monitor for updates from vendors/security bulletins.

CVE-2025-47370 Reachable Assertion in BT Controller

Transient DOS when a remote device sends an invalid connection request during BT connectable LE scan...

CVE-2025-47342 Use After Free in BT Controller

Transient DOS may occur when multi-profile concurrency arises with QHS enabled...

CVE-2025-47342 Use After Free in BT Controller

Transient DOS may occur when multi-profile concurrency arises with QHS enabled...

CVE-2025-47342

CVE-2025-47342 concerns Qualcomm chipsets where a transient denial-of-service can occur due to concurrency involving QHS and multi-profile configurations. The Red Hat/NVD/CVE records describe the issue as a transient DOS when multiple profiles are used concurrently with QHS enabled; the CVE List ...