CVE-2026-12411

Broken Access Control in the devLXDInstancePatchHandler component of Canonical LXD allows an untrusted guest to mount, read, and overwrite another guest's custom storage volume via a crafted device PATCH request over /dev/lxd when security.devlxd.management.volumes is enabled.

CVSS v3 8.4 HIGH

8.4^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.0 / Impact : 5.8

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/canonical/lxd/pull/18585	Issue Tracking Patch
https://github.com/canonical/lxd/security/advisories/GHSA-hhf9-qw4v-72xp	Exploit Vendor Advisory
https://github.com/canonical/lxd/security/advisories/GHSA-hhf9-qw4v-72xp	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:canonical:lxd:*:*:*:*:*:*:*:*

History

25 Oct 2026, 17:10

Type	Values Removed	Values Added
Summary		(es) Control de acceso roto en el componente devLXDInstancePatchHandler de Canonical LXD permite a un invitado no confiable montar, leer y sobrescribir el volumen de almacenamiento personalizado de otro invitado a través de una solicitud PATCH de dispositivo manipulada sobre /dev/lxd cuando security.devlxd.management.volumes está habilitado.

Information

Published : 2026-06-26 16:16

Updated : 2026-10-25 17:10

NVD link : CVE-2026-12411

Mitre link : CVE-2026-12411

CVE.ORG link : CVE-2026-12411

JSON object : View

Products Affected

canonical

lxd

CWE

CWE-639

Authorization Bypass Through User-Controlled Key

CWE-862

Missing Authorization

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