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.
Fix
Patch, vendor advisory and mitigation references on NVD 3
- 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
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 9.6 · canonicalNVD modified 2026-10-25 17:10
Affected (CPE criteria) 1
cpe:2.3:a:canonical:lxd:*:*:*:*:*:*:*:*
References 3
- 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