EUVD-2026-45717

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcisync: fix UAF in hcilecreatecissync hcilecreatecissync dereferences conn-conntimeout after releasing both rcureadlock and hcidevlockhdev. The conn pointer was obtained from an RCU-protected iteration over...

CVE-2026-63871

CVE-2026-63871 concerns the Linux kernel Bluetooth ISO path. The issue is a data-race on the iso_pi fields passed to hci_get_route() in iso_connect_bis(), iso_connect_cis(), iso_listen_bis(), and iso_conn_big_sync(), which read iso_pi(sk)->dst/src/src_type without holding lock_sock(). Concurre...

CVE-2026-53364

The CVE-2026-53364 vulnerability is in the Linux kernel Bluetooth HCI path: hci_le_big_terminate() may leak memory (iso_list_data) when neither pa_sync_term nor big_sync_term flags are set after PA/BIG state evaluation. The function was refactored to accept a struct hci_conn and added PA/BIG flag...

CVE-2026-53251

A flaw was found in the Linux kernel's Bluetooth subsystem. The hcigetroute function, used in the ISO Isochronous Stream connection handling, fails to release a reference-counted hcidev pointer. This resource leak could lead to a Denial of Service DoS condition...

PT-2026-52371

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A use-after-free issue exists in the Bluetooth ISO implementation. In the iso sock rebind bc function, the bis pointer is cached and the socket lock is subsequently dropped. A concurrent...

Astra Linux – Vulnerability found in Linux 6.12, Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: usb: xhci: Apply the link chain quirk on NEC isoc endpoints Two distinctly different samples of NEC uPD720200 one with a start/stop bug, one without it were observed to cause IOMMU faults after some “Missed Service Errors”. Th...

kernel: Bluetooth: hci_sync: fix stack buffer overflow in hci_le_big_create_sync

A flaw was found in the Linux kernel's Bluetooth Host Controller Interface HCI synchronization. A local user could trigger a stack buffer overflow by binding a specific type of Bluetooth socket with an excessive number of Bluetooth Isochronous Stream BIS entries. This memory corruption can lead t...

kernel: Bluetooth: hci_sync: fix stack buffer overflow in hci_le_big_create_sync

A flaw was found in the Linux kernel's Bluetooth Host Controller Interface HCI synchronization. A local user could trigger a stack buffer overflow by binding a specific type of Bluetooth socket with an excessive number of Bluetooth Isochronous Stream BIS entries. This memory corruption can lead t...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: Bluetooth: hcievent: Fixed an issue where OOB reading and an infinite loop occurred in hcilecreatebigcompleteevt. The hcilecreatebigcompleteevt function iterates over BTBOUND connections for a BIG handle using a while loop...

EUVD-2026-32765

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcievent: Fix OOB read and infinite loop in hcilecreatebigcompleteevt hcilecreatebigcompleteevt iterates over BTBOUND connections for a BIG handle using a while loop, accessing ev-bishandlei++ on each iteration. Howeve...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: Bluetooth: hciconn: now returns ERRPTR instead of NULL when there is no link. Currently, hciconnectsco returns NULL when there is no link i.e., when hciconnlink returns NULL. scoconnect expects ERRPTR in case of any error see...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: xHCI: Properly handling isoc Babble and Buffer Overrun events. xHCI 4.9 explicitly prohibits making assumptions that the xHC has released its ownership of a multi-TRB TD when an error occurs in one of the early TRBs. However,...

SUSE CVE-2026-31772

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcisync: fix stack buffer overflow in hcilebigcreatesync hcilebigcreatesync uses DEFINEFLEX to allocate a struct hcicplebigcreatesync on the stack with room for 0x11 17 BIS entries. However, conn-numbis can hold up to...

CVE-2026-31772 Bluetooth: hci_sync: fix stack buffer overflow in hci_le_big_create_sync

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcisync: fix stack buffer overflow in hcilebigcreatesync hcilebigcreatesync uses DEFINEFLEX to allocate a struct hcicplebigcreatesync on the stack with room for 0x11 17 BIS entries. However, conn-numbis can hold up to...

CVE-2026-31772 Bluetooth: hci_sync: fix stack buffer overflow in hci_le_big_create_sync

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcisync: fix stack buffer overflow in hcilebigcreatesync hcilebigcreatesync uses DEFINEFLEX to allocate a struct hcicplebigcreatesync on the stack with room for 0x11 17 BIS entries. However, conn-numbis can hold up to...

EUVD-2026-26585

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcisync: fix stack buffer overflow in hcilebigcreatesync hcilebigcreatesync uses DEFINEFLEX to allocate a struct hcicplebigcreatesync on the stack with room for 0x11 17 BIS entries. However, conn-numbis can hold up to...

PT-2026-36407

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A stack buffer overflow exists in the hci le big create sync function. The function uses DEFINE FLEX to allocate a struct hci cp le big create sync on the stack with space for 17 BIS...

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...

Moderate: Red Hat Security Advisory: kernel security update

An update for kernel is now available for Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is...

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...