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...

PT-2026-61261

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A use-after-free read occurs in the Bluetooth subsystem within the hci le create cis sync function. The issue arises when the function dereferences the conn-conn timeout variable after...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: Bluetooth: hciconn: Fixed a crash that occurred during hcicreatecissync. When attempting to connect multiple ISO sockets without using DEFERSETUP, the following crash may occur: BUG: KASAN: Null pointer dereferencing in...

Azure Linux 3.0 Security Update: kernel (CVE-2025-21735)

The version of kernel installed on the remote Azure Linux 3.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2025-21735 advisory. - In the Linux kernel, the following vulnerability has been resolved: NFC: nci: Add bounds checking in...

ROS-20260119-7344

A vulnerability in the ncihcicreatepipe and ncihciconnectgate functions of the Linux operating system kernel is related to writing beyond buffer boundaries in memory. Exploitation of the vulnerability may allow an intruder to affect confidentiality, integrity and availability of protected...

SUSE CVE-2022-50447

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hciconn: Fix crash on hcicreatecissync When attempting to connect multiple ISO sockets without using DEFERSETUP may result in the following crash: BUG: KASAN: null-ptr-deref in hcicreatecissync+0x18b/0x2b0 Read of size...

CVE-2022-50447

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hciconn: Fix crash on hcicreatecissync When attempting to connect multiple ISO sockets without using DEFERSETUP may result in the following crash: BUG: KASAN: null-ptr-deref in hcicreatecissync+0x18b/0x2b0 Read of size...

UBUNTU-CVE-2022-50447

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hciconn: Fix crash on hcicreatecissync When attempting to connect multiple ISO sockets without using DEFERSETUP may result in the following crash: BUG: KASAN: null-ptr-deref in hcicreatecissync+0x18b/0x2b0 Read of size...

CVE-2022-50447 Bluetooth: hci_conn: Fix crash on hci_create_cis_sync

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hciconn: Fix crash on hcicreatecissync When attempting to connect multiple ISO sockets without using DEFERSETUP may result in the following crash: BUG: KASAN: null-ptr-deref in hcicreatecissync+0x18b/0x2b0 Read of size...

UBUNTU-CVE-2025-21735

In the Linux kernel, the following vulnerability has been resolved: NFC: nci: Add bounds checking in ncihcicreatepipe The "pipe" variable is a u8 which comes from the network. If it's more than 127, then it results in memory corruption in the caller, ncihciconnectgate...