Unity Linux 20.1070e Security Update: kernel (UTSA-2026-013193)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-013193 advisory. In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix use-after-free in l2capdisconnectreq,rsp Similar to commit d0be8347c623...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-007293)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-007293 advisory. In the Linux kernel, the following vulnerability has been resolved: Bluetooth: l2cap: fix null-ptr-deref in l2capchantimeout There is a race condition between...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-007343)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-007343 advisory. In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: do not leave dangling sk pointer on error in l2capsockcreate btsockalloc...

SUSE CVE-2026-23461

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix use-after-free in l2capunregisteruser After commit ab4eedb790ca "Bluetooth: L2CAP: Fix corrupted list in hcichandel", l2capconndel uses conn-lock to protect access to conn-users. However, l2capregisteruser a...

SUSE CVE-2026-31393

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Validate L2CAPINFORSP payload length before access l2capinformationrsp checks that cmdlen covers the fixed l2capinforsp header type + result, 4 bytes but then reads rsp-data without verifying that the payload is...

CVE-2026-23461

A flaw was found in the Linux kernel's Bluetooth L2CAP component. A race condition exists due to inconsistent locking mechanisms when registering and unregistering L2CAP users. This allows concurrent access to shared data structures, leading to use-after-free vulnerabilities and list corruption...

EUVD-2026-18724

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: HIDP: Fix possible UAF This fixes the following trace caused by not dropping l2capconn reference when user-remove callback is called: 97.809249 l2capconnfree: freeing conn ffff88810a171c00 97.809907 CPU: 1 UID: 0 PID:...

EUVD-2026-18722

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix use-after-free in l2capunregisteruser After commit ab4eedb790ca "Bluetooth: L2CAP: Fix corrupted list in hcichandel", l2capconndel uses conn-lock to protect access to conn-users. However, l2capregisteruser a...

CVE-2026-31393

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Validate L2CAPINFORSP payload length before access l2capinformationrsp checks that cmdlen covers the fixed l2capinforsp header type + result, 4 bytes but then reads rsp-data without verifying that the payload is...

CVE-2026-23461

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix use-after-free in l2capunregisteruser After commit ab4eedb790ca "Bluetooth: L2CAP: Fix corrupted list in hcichandel", l2capconndel uses conn-lock to protect access to conn-users. However, l2capregisteruser a...

CVE-2026-23462

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: HIDP: Fix possible UAF This fixes the following trace caused by not dropping l2capconn reference when user-remove callback is called: 97.809249 l2capconnfree: freeing conn ffff88810a171c00 97.809907 CPU: 1 UID: 0 PID:...

UBUNTU-CVE-2026-23462

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: HIDP: Fix possible UAF This fixes the following trace caused by not dropping l2capconn reference when user-remove callback is called: 97.809249 l2capconnfree: freeing conn ffff88810a171c00 97.809907 CPU: 1 UID: 0 PID:...

CVE-2026-31393 Bluetooth: L2CAP: Validate L2CAP_INFO_RSP payload length before access

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Validate L2CAPINFORSP payload length before access l2capinformationrsp checks that cmdlen covers the fixed l2capinforsp header type + result, 4 bytes but then reads rsp-data without verifying that the payload is...

CVE-2026-23461

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix use-after-free in l2capunregisteruser After commit ab4eedb790ca "Bluetooth: L2CAP: Fix corrupted list in hcichandel", l2capconndel uses conn-lock to protect access to conn-users. However, l2capregisteruser a...

CVE-2026-23461

CVE-2026-23461: In the Linux kernel Bluetooth L2CAP, l2cap_register_user() and l2cap_unregister_user() did not consistently acquire conn->lock, creating a race with l2cap_conn_del() that can access conn->users and conn->hchan concurrently. This caused use-after-free and list corruption. ...

CVE-2026-23461 Bluetooth: L2CAP: Fix use-after-free in l2cap_unregister_user

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix use-after-free in l2capunregisteruser After commit ab4eedb790ca "Bluetooth: L2CAP: Fix corrupted list in hcichandel", l2capconndel uses conn-lock to protect access to conn-users. However, l2capregisteruser a...

CVE-2026-23462

CVE-2026-23462 affects the Linux kernel Bluetooth stack (HIDP/L2CAP). The issue is a use-after-free related to not dropping the l2cap_conn reference during user remove callbacks, leading to a trace like l2cap_conn_free and cascading calls in the Bluetooth/hci_core paths. Connected sources confirm...

CVE-2026-23462 Bluetooth: HIDP: Fix possible UAF

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: HIDP: Fix possible UAF This fixes the following trace caused by not dropping l2capconn reference when user-remove callback is called: 97.809249 l2capconnfree: freeing conn ffff88810a171c00 97.809907 CPU: 1 UID: 0 PID:...

CVE-2026-28526 BlueKitchen BTstack < 1.8.1 AVRCP Controller LIST_PLAYER_APPLICATION_SETTING_* Handlers OOB Read

BlueKitchen BTstack versions prior to 1.8.1 contain an out-of-bounds read vulnerability in the AVRCP Controller LISTPLAYERAPPLICATIONSETTINGATTRIBUTES and LISTPLAYERAPPLICATIONSETTINGVALUES handlers that allows attackers to read beyond buffer boundaries. A nearby attacker with a paired Bluetooth...

Security update for the Linux Kernel

The SUSE Linux Enterprise 12 SP5 kernel was updated to receive various security bugfixes. The following security bugs were fixed: CVE-2022-50453: gpiolib: cdev: fix NULL-pointer dereferences bsc1250887. CVE-2023-53794: cifs: fix session state check in reconnect to avoid use-after-free issue...