CVE-2026-12411

EUVD-2026-39788
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
8.4 HIGH
LOCAL
LOW
LOW
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 14.55%
Affected Products (NVD)
VendorProductVersion
canonicallxd
6.6 ≤
𝑥
< 6.9
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
lxd
bookworm
5.0.2-5+deb12u6
fixed
bookworm (security)
5.0.2-5+deb12u6
fixed
trixie
5.0.2+git20231211.1364ae4-9+deb13u7
fixed
trixie (security)
5.0.2+git20231211.1364ae4-9+deb13u7
fixed
Common Weakness Enumeration
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