PT-2026-36438

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A memory leak occurs in the Bluetooth component when the hci cmd sync queue once function returns an error. In such cases, the destroy callback is not triggered, leading to leaking...

The vulnerability of the btusb_hci_drv_supported_altsettings() function in the drivers/bluetooth/btusb.c module of the Linux Bluetooth device driver allows a attacker to cause a service failure.

The vulnerability of the btusbhcidrvsupportedaltsettings function in the drivers/bluetooth/btusb.c module of the Linux Bluetooth device driver framework is related to pointer manipulation. Exploiting this vulnerability could allow an attacker to cause a service failure...

The vulnerability of the discovery_init() function in the include/net/bluetooth/hci_core.h file of the Linux kernel allows a attacker to compromise the confidentiality, integrity, and accessibility of the protected information.

The vulnerability of the discoveryinit function in the include/net/bluetooth/hcicore.h file of the Linux kernel is related to pointer manipulation. Exploiting this vulnerability could allow an attacker to compromise the confidentiality, integrity, and accessibility of the protected information...

2026-03 Cumulative security Hotpatch for Azure Stack HCI, version 21H2 and Windows Server 2022 Datacenter: Azure Edition for x64-based Systems (KB5078737)

Install this update to resolve issues in Windows. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article for more information...

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: Linux kernel Bluetooth: Denial of Service due to use-after-free in connection handling

A flaw was found in the Linux kernel's Bluetooth subsystem. A use-after-free UAF vulnerability exists in the hcidisconnectallsync function. This can occur if a Bluetooth connection is deleted while a controller event is being processed concurrently. A local attacker could potentially exploit this...

kernel: Linux kernel Bluetooth: Denial of Service due to use-after-free in connection handling

A flaw was found in the Linux kernel's Bluetooth subsystem. A use-after-free UAF vulnerability exists in the hcidisconnectallsync function. This can occur if a Bluetooth connection is deleted while a controller event is being processed concurrently. A local attacker could potentially exploit this...

Linux Distros Unpatched Vulnerability : CVE-2026-23146

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Bluetooth: hciuart: fix null-ptr-deref in hciuartwritework hciuartsetproto sets HCIUARTPROTOINIT before calling hciuartregisterdev, which calls proto-open to...

CVE-2026-23146

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hciuart: fix null-ptr-deref in hciuartwritework hciuartsetproto sets HCIUARTPROTOINIT before calling hciuartregisterdev, which calls proto-open to initialize hu-priv. However, if a TTY write wakeup occurs during this...

CVE-2026-23146

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hciuart: fix null-ptr-deref in hciuartwritework hciuartsetproto sets HCIUARTPROTOINIT before calling hciuartregisterdev, which calls proto-open to initialize hu-priv. However, if a TTY write wakeup occurs during this...

CVE-2026-23146

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hciuart: fix null-ptr-deref in hciuartwritework hciuartsetproto sets HCIUARTPROTOINIT before calling hciuartregisterdev, which calls proto-open to initialize hu-priv. However, if a TTY write wakeup occurs during this...

CVE-2026-23146 Bluetooth: hci_uart: fix null-ptr-deref in hci_uart_write_work

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hciuart: fix null-ptr-deref in hciuartwritework hciuartsetproto sets HCIUARTPROTOINIT before calling hciuartregisterdev, which calls proto-open to initialize hu-priv. However, if a TTY write wakeup occurs during this...

EUVD-2026-5891

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hciuart: fix null-ptr-deref in hciuartwritework hciuartsetproto sets HCIUARTPROTOINIT before calling hciuartregisterdev, which calls proto-open to initialize hu-priv. However, if a TTY write wakeup occurs during this...

CVE-2026-23146

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hciuart: fix null-ptr-deref in hciuartwritework hciuartsetproto sets HCIUARTPROTOINIT before calling hciuartregisterdev, which calls proto-open to initialize hu-priv. However, if a TTY write wakeup occurs during this...

CLSA-2026-1771081379 kernel: Fix of 76 CVEs

HID: core: ensure the allocated report buffer can contain the reserved report ID CVE-2025-38495 - fs/proc: fix uaf in procreaddirde CVE-2025-40271 - ALSA: usb-audio: Fix potential overflow of PCM transfer buffer CVE-2025-40269 - Bluetooth: ISO: Fix possible UAF on isoconnfree CVE-2025-40141 -...

2026-02 Cumulative security Hotpatch for Azure Stack HCI, version 21H2 and Windows Server 2022 Datacenter: Azure Edition for x64-based Systems (KB5075943)

Install this update to resolve issues in Windows. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article for more information...

Oracle Linux 9 : kernel (ELSA-2026-2212)

The remote Oracle Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-2212 advisory. - iouring/net: commit partial buffers on retry Jeff Moyer RHEL-137329 CVE-2025-38730 - atm: clip: Fix infinite recursive call of clippush. Guillaume...

Moderate: kernel security update

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: net: openvswitch: fix nested key length validation in the set action CVE-2025-37789 kernel: Linux kernel: irqchip/gic-v2m use-after-free vulnerability CVE-2025-37819 kernel: RDMA/core: Fi...

The vulnerability of the hci_conn_del() function in the net/bluetooth/hci_conn.c module of the Linux kernel’s Bluetooth subsystem allows a attacker to cause a service failure.

The vulnerability of the hciconndel function in the net/bluetooth/hciconn.c module of the Bluetooth subsystem in the Linux operating system is related to improper control of resource identifiers “resource injection”. Exploiting this vulnerability could allow a attacker to cause service failures...

RLSA-2026:1143 Important: kernel security update

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: Linux kernel: Use-after-free in device mapper due to race condition in zone reporting CVE-2025-38141 kernel: Linux kernel use-after-free in eventpoll CVE-2025-38349 kernel: drm/xe: Fix...