Vulnerability Description
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 Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/canonical/lxd/pull/18585
- https://github.com/canonical/lxd/security/advisories/GHSA-hhf9-qw4v-72xp
- https://github.com/canonical/lxd/security/advisories/GHSA-hhf9-qw4v-72xp
FAQ
What is CVE-2026-12411?
CVE-2026-12411 is a vulnerability with a CVSS score of 8.4 (HIGH). 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 PA...
How severe is CVE-2026-12411?
CVE-2026-12411 has been rated HIGH with a CVSS base score of 8.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-12411?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.