CVE-2026-12411

NameCVE-2026-12411
DescriptionBroken 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.
SourceCVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
lxd (PTS)bookworm, bookworm (security)5.0.2-5+deb12u6fixed
trixie (security), trixie5.0.2+git20231211.1364ae4-9+deb13u6fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
lxdsource(unstable)(not affected)

Notes

- lxd <not-affected> (Only affects LXD 6.6 and later)
https://github.com/canonical/lxd/security/advisories/GHSA-hhf9-qw4v-72xp
https://github.com/canonical/lxd/pull/18585
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