CVE-2026-12411
criticalBroken Access Control in the devLXDInstancePatchHandler component of Canonical LXD allows an untrusted guest to mount, read, and overwrite another guest's cust…
Vendor / product: Canonical — lxd
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
9.6
9.6 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N Severity source: NVD CVSS v3.1 (nvd@nist.gov)
Timeline (UTC)
Published: 2026-06-26 16:16
Modified: 2026-10-25 17:10
NVD status: Analyzed
Last synced 2 days ago
Verified against the source API 2026-10-27 07:07 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
canonical / lxd ≥6.6 <6.9
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Patch / mitigation: https://github.com/canonical/lxd/pull/18585
References
- https://github.com/canonical/lxd/pull/18585 security@ubuntu.com
- https://github.com/canonical/lxd/security/advisories/GHSA-hhf9-qw4v-72xp security@ubuntu.com
- https://github.com/canonical/lxd/security/advisories/GHSA-hhf9-qw4v-72xp 134c704f-9b21-4f2e-91b3-4a467353bcc0
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 07:07 UTC · record ↗