Vulnerability DatabaseCVE-2026-12411
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CVE-2026-12411
Published:June 26, 2026
Updated:June 29, 2026
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.
Affected Packages
https://github.com/canonical/lxd.git (GITHUB):
Affected version(s) >=lxd-6.6 <lxd-6.9
Fix Suggestion:
Update to version lxd-6.9
github.com/canonical/lxd (GO):
Affected version(s) >=v0.0.0-20251124164554-49569b65625b <v0.0.0-20260622081844-85f897013ccd
Fix Suggestion:
Update to version v0.0.0-20260622081844-85f897013ccd
Related Resources (2)
https://github.com/canonical/lxd/pull/18585
https://github.com/canonical/lxd/security/advisories/GHSA-hhf9-qw4v-72xp
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CVSS v4
Base Score:
9.2
Attack Vector
LOCAL
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
NONE
Subsequent System Confidentiality
HIGH
Subsequent System Integrity
HIGH
Subsequent System Availability
NONE
CVSS v3
Base Score:
8.4
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Weakness Type (CWE)
Missing Authorization
CWE-862
Authorization Bypass Through User-Controlled Key
CWE-639
EPSS
Base Score:
0.11