kernel: Bluetooth: MGMT: validate LTK enc_size on load

A flaw was found in the Linux kernel's Bluetooth management MGMT component. An attacker could exploit a vulnerability in how Long Term Keys LTK are loaded. By providing an oversized encryption size, a stack buffer overflow can occur, potentially leading to a denial of service...

UBUNTU-CVE-2026-93247

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: mgmt: fix 'hdev-discovery.uuids' NULL dereference 'uuidcount' member of struct 'discoverystate' is assigned and read without any locks, so there is a chance of situation when uuidcount != 0, but uuids is NULL and there...

CVE-2026-93247 Bluetooth: mgmt: fix 'hdev->discovery.uuids' NULL dereference

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: mgmt: fix 'hdev-discovery.uuids' NULL dereference 'uuidcount' member of struct 'discoverystate' is assigned and read without any locks, so there is a chance of situation when uuidcount != 0, but uuids is NULL and there...

RLSA-2026:70498 Important: kernel security, bug fix, and enhancement update

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: crypto: afalg - Disallow concurrent writes in afalgsendmsg CVE-2025-39964 kernel: iommu/vt-d: Clear Present bit before tearing down PASID entry CVE-2026-45894 kernel: crypto: ccp - Fix a...

CVE-2026-93247

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: mgmt: fix 'hdev-discovery.uuids' NULL dereference 'uuidcount' member of struct 'discoverystate' is assigned and read without any locks, so there is a chance of situation when uuidcount != 0, but uuids is NULL and there...

SUSE CVE-2026-90252

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: MGMT: free the HCI command when it is cancelled mgmthcicmdsync queues the pending command with a NULL destroy callback, so it is only freed if sendhcicmdsync runs. A cancelled entry is leaked, as hcicmdsynccancelentry...

SUSE CVE-2026-90253

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: MGMT: free the mesh send cancel command when it is cancelled meshsendcancel queues the pending command with a NULL destroy callback, so it is only freed if sendcancel runs. A cancelled entry is leaked, as...

DEBIAN-CVE-2026-90252

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: MGMT: free the HCI command when it is cancelled mgmthcicmdsync queues the pending command with a NULL destroy callback, so it is only freed if sendhcicmdsync runs. A cancelled entry is leaked, as hcicmdsynccancelentry...

DEBIAN-CVE-2026-90253

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: MGMT: free the mesh send cancel command when it is cancelled meshsendcancel queues the pending command with a NULL destroy callback, so it is only freed if sendcancel runs. A cancelled entry is leaked, as...

CVE-2026-90252

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: MGMT: free the HCI command when it is cancelled mgmthcicmdsync queues the pending command with a NULL destroy callback, so it is only freed if sendhcicmdsync runs. A cancelled entry is leaked, as hcicmdsynccancelentry...

AZL-102335 CVE-2026-90253 affecting package kernel for versions less than 6.6.157.1-1

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: MGMT: free the mesh send cancel command when it is cancelled meshsendcancel queues the pending command with a NULL destroy callback, so it is only freed if sendcancel runs. A cancelled entry is leaked, as...

CVE-2026-90253

In the Linux kernel Bluetooth MGMT subsystem , mesh_send_cancel() queues a pending command with a NULL destroy callback , meaning it is only freed if send_cancel() actually runs. When the entry is cancelled (e.g., by hci_cmd_sync_clear() on controller unregistration), _hci_cmd_sync_cancel_entry()...

EUVD-2026-81846

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: MGMT: free the mesh send cancel command when it is cancelled meshsendcancel queues the pending command with a NULL destroy callback, so it is only freed if sendcancel runs. A cancelled entry is leaked, as...

CVE-2026-90253 Bluetooth: MGMT: free the mesh send cancel command when it is cancelled

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: MGMT: free the mesh send cancel command when it is cancelled meshsendcancel queues the pending command with a NULL destroy callback, so it is only freed if sendcancel runs. A cancelled entry is leaked, as...

EUVD-2026-81845

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: MGMT: free the HCI command when it is cancelled mgmthcicmdsync queues the pending command with a NULL destroy callback, so it is only freed if sendhcicmdsync runs. A cancelled entry is leaked, as hcicmdsynccancelentry...

CVE-2026-90252 Bluetooth: MGMT: free the HCI command when it is cancelled

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: MGMT: free the HCI command when it is cancelled mgmthcicmdsync queues the pending command with a NULL destroy callback, so it is only freed if sendhcicmdsync runs. A cancelled entry is leaked, as hcicmdsynccancelentry...

CVE-2026-90252

CVE-2026-90252 is a memory and socket-reference leak in the Linux kernel's Bluetooth MGMT subsystem. The root cause is that mgmt_hci_cmd_sync() queues a pending HCI command with a NULL destroy callback , meaning a cancelled entry is never freed. When a controller is unregistered, hci_cmd_sync_cle...

CVE-2026-90252 Bluetooth: MGMT: free the HCI command when it is cancelled

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: MGMT: free the HCI command when it is cancelled mgmthcicmdsync queues the pending command with a NULL destroy callback, so it is only freed if sendhcicmdsync runs. A cancelled entry is leaked, as hcicmdsynccancelentry...

PT-2026-94601

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A memory leak occurs in the Bluetooth MGMT component when a mesh send cancel command is cancelled. The mesh send cancel function queues a pending command with a NULL destroy callback,...

PT-2026-94600

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A memory leak occurs in the Bluetooth MGMT component when an HCI command is cancelled. The mgmt hci cmd sync function queues pending commands with a NULL destroy callback, meaning they a...