The vulnerabilities of the functions hci_link_keys_clear(), hci_smp_ltks_clear(), hci_smp_irks_clear(), and hci_blocked_keys_clear() in the net/bluetooth/hci_core.c module of the Linux operating system’s Bluetooth subsystem allow attackers to compromise the confidentiality, integrity, and accessibility of protected information.

The vulnerability of the functions hcilinkkeysclear, hcismpltksclear, hcismpirksclear, and hciblockedkeysclear in the net/bluetooth/hcicore.c module of the Linux operating system’s Bluetooth subsystem is related to the reallocation of previously freed memory. Exploiting this vulnerability could...

kernel: Linux kernel: xHCI driver isochronous event handling race condition leading to data loss or UAF

A flaw was found in the Linux kernel's xHCI eXtensible Host Controller Interface driver. This vulnerability allows data loss or buffer Use-After-Free UAF due to a race condition during isochronous Ring Underrun/Overrun event handling...

kernel: Linux kernel: xHCI driver isochronous event handling race condition leading to data loss or UAF

A flaw was found in the Linux kernel's xHCI eXtensible Host Controller Interface driver. This vulnerability allows data loss or buffer Use-After-Free UAF due to a race condition during isochronous Ring Underrun/Overrun event handling...

kernel: Linux kernel: xHCI driver isochronous event handling race condition leading to data loss or UAF

A flaw was found in the Linux kernel's xHCI eXtensible Host Controller Interface driver. This vulnerability allows data loss or buffer Use-After-Free UAF due to a race condition during isochronous Ring Underrun/Overrun event handling...

CVE-2026-23167

In the Linux kernel, the following vulnerability has been resolved: nfc: nci: Fix race between rfkill and nciunregisterdevice. syzbot reported the splat below 0 without a repro. It indicates that struct ncidev.cmdwq had been destroyed before nciclosedevice was called via rfkill. ncidev.cmdwq is...

kernel: Bluetooth: hci_sync: fix race in hci_cmd_sync_dequeue_once

A use-after-free flaw was found in hcicmdsyncdequeueonce in net/bluetooth/hcisync.c in Bluetooth: hcisync in Linux Kernel. This vulnerability could even lead to a kernel information leak problem...

kernel: Linux kernel: Information disclosure and denial of service in Bluetooth HCI event handling

A flaw was found in the Linux kernel's Bluetooth component. A local attacker with low privileges could exploit a vulnerability in the Host Controller Interface HCI event processing. This issue arises from improper handling of command complete events with unknown opcodes, which can lead to the...

kernel: Linux kernel: Information disclosure and denial of service in Bluetooth HCI event handling

A flaw was found in the Linux kernel's Bluetooth component. A local attacker with low privileges could exploit a vulnerability in the Host Controller Interface HCI event processing. This issue arises from improper handling of command complete events with unknown opcodes, which can lead to the...

Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-003720)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-003720 advisory. An issue was discovered in the Linux kernel before 5.0.5. There is a use-after-free issue when hciuartregisterdev fails in hciuartsetproto in...

Unity Linux 20.1070e Security Update: kernel (UTSA-2026-001579)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-001579 advisory. A flaw use-after-free in function scosocksendmsg of the Linux kernel HCI subsystem was found in the way user calls ioct UFFDIOREGISTER or other way triggers race...

Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-003950)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-003950 advisory. An issue was discovered in the Linux kernel before 5.0.5. There is a use-after-free issue when hciuartregisterdev fails in hciuartsetproto in...

Unity Linux 20.1070e Security Update: kernel (UTSA-2026-001468)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-001468 advisory. A use-after-free flaw was found in ncirequest in net/nfc/nci/core.c in NFC Controller Interface NCI in the Linux kernel. This flaw could allow a local attacker with...

kernel: Bluetooth: hci_event: Fix UAF in hci_acl_create_conn_sync

A flaw was found in the Linux kernel’s Bluetooth subsystem HCI. Specifically, in the function hciaclcreateconnsync and related path hcilecreateconnsync, a connection object in state BTOPEN that is still pending command submission may be freed prematurely, leading to a use-after-free condition. An...

CVE-2025-53470 Apache Mynewt NimBLE: Out-of-Bounds Write Vulnerability in NimBLE HCI H4 driver

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 Apache Mynewt NimBLE: NULL Pointer Dereference in NimBLE host HCI layer

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...

EUVD-2026-1853

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-2025-53477 Apache Mynewt NimBLE: NULL Pointer Dereference in NimBLE host HCI layer

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...

Apache NimBLE 缓冲区错误漏洞

Apache NimBLE is an open source Bluetooth 5.4 stack host and controller from the Apache Foundation, USA, that completely replaces the proprietary SoftDevice on Nordic chipsets.It is part of the Apache Mynewt project. A buffer error vulnerability exists in Apache NimBLE 1.8 and earlier versions,...

PT-2026-1815

Name of the Vulnerable Software and Affected Versions Apache NimBLE versions through 1.8 Description An out-of-bounds read issue exists in the Apache NimBLE HCI H4 driver. A specially crafted HCI event can cause an invalid memory read within the H4 driver. The issue is considered low severity as ...

PT-2026-1816

Name of the Vulnerable Software and Affected Versions Apache NimBLE versions through 1.8.0 Description A flaw exists in Apache NimBLE where missing validation of an HCI connection complete or HCI command TX buffer can result in a NULL pointer dereference. This issue requires disabled asserts and ...