DEBIAN-CVE-2026-34178
In Canonical LXD before 6.8, the backup import path validates project restrictions against backup/index.yaml in the supplied tar archive but creates the instance from backup/container/backup.yaml, a separate file in the same archive that is never checked against project restrictions. An authenticated remote attacker with instance-creation permission in a restricted project can craft a backup archive where backup.yaml carries restricted settings such as security.privileged=true or raw.lxc directives, bypassing all project restriction enforcement and allowing full host compromise.
DEBIAN-CVE-2026-34178
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:DEBIAN-CVE-2026-34178
incus
Source reference: /affected/0/package/name
- Affected versions
- 6.0.4-2
Source reference:
/affected/0/versions6.0.4-2+deb13u1Source reference:
/affected/0/versions6.0.4-2+deb13u1~bpo12+1Source reference:
/affected/0/versions6.0.4-2+deb13u2Source reference:
/affected/0/versions6.0.4-2+deb13u2~bpo12+1Source reference:
/affected/0/versions6.0.4-2+deb13u3Source reference:
/affected/0/versions6.0.4-2+deb13u3~bpo12+1Source reference:
/affected/0/versions6.0.4-2+deb13u4Source reference:
/affected/0/versions6.0.4-2+deb13u4~bpo12+1Source reference:
/affected/0/versions6.0.4-2+deb13u5Source reference:
/affected/0/versions6.0.4-2+deb13u5~bpo12+1Source reference:
/affected/0/versions6.0.4-2+deb13u6~bpo12+1Source reference:
/affected/0/versions - Fixed versions
- 6.0.4-2+deb13u6
Source reference:
/affected/0/ranges - Prerequisites
- Not stated in this record
incus
Source reference: /affected/1/package/name
- Affected versions
- 6.0.4-2
Source reference:
/affected/1/versions6.0.4-3Source reference:
/affected/1/versions6.0.5-1Source reference:
/affected/1/versions6.0.5-2Source reference:
/affected/1/versions6.0.5-3Source reference:
/affected/1/versions6.0.5-4Source reference:
/affected/1/versions6.0.5-5Source reference:
/affected/1/versions6.0.5-6Source reference:
/affected/1/versions6.0.5-7Source reference:
/affected/1/versions6.0.5-8Source reference:
/affected/1/versions6.0.6-1Source reference:
/affected/1/versions6.0.6-2Source reference:
/affected/1/versions - Fixed versions
- 6.0.6-3
Source reference:
/affected/1/ranges - Prerequisites
- Not stated in this record
lxd
Source reference: /affected/2/package/name
- Affected versions
- 5.0.2+git20231211.1364ae4-1
Source reference:
/affected/2/versions5.0.2+git20231211.1364ae4-2Source reference:
/affected/2/versions5.0.2+git20231211.1364ae4-3Source reference:
/affected/2/versions5.0.2+git20231211.1364ae4-4Source reference:
/affected/2/versions5.0.2+git20231211.1364ae4-5Source reference:
/affected/2/versions5.0.2+git20231211.1364ae4-6Source reference:
/affected/2/versions5.0.2+git20231211.1364ae4-7Source reference:
/affected/2/versions5.0.2+git20231211.1364ae4-8Source reference:
/affected/2/versions5.0.2+git20231211.1364ae4-9Source reference:
/affected/2/versions5.0.2-5Source reference:
/affected/2/versions5.0.2-5+deb12u1Source reference:
/affected/2/versions5.0.2-5+deb12u2Source reference:
/affected/2/versions5.0.2-5+deb12u3Source reference:
/affected/2/versions5.0.2-5+deb12u4Source reference:
/affected/2/versions5.0.2-5+deb12u5Source reference:
/affected/2/versions5.0.2-5+deb12u6Source reference:
/affected/2/versions5.0.2-6Source reference:
/affected/2/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
lxd
Source reference: /affected/3/package/name
- Affected versions
- 5.0.2+git20231211.1364ae4-9
Source reference:
/affected/3/versions5.0.2+git20231211.1364ae4-9+deb13u1Source reference:
/affected/3/versions5.0.2+git20231211.1364ae4-9+deb13u2Source reference:
/affected/3/versions5.0.2+git20231211.1364ae4-9+deb13u3Source reference:
/affected/3/versions5.0.2+git20231211.1364ae4-9+deb13u4Source reference:
/affected/3/versions - Fixed versions
- 5.0.2+git20231211.1364ae4-9+deb13u5
Source reference:
/affected/3/ranges - Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "6.0.4-2+deb13u6"
}
]
}
],
"package": {
"name": "incus",
"purl": "pkg:deb/debian/incus?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"6.0.4-2",
"6.0.4-2+deb13u1",
"6.0.4-2+deb13u1~bpo12+1",
"6.0.4-2+deb13u2",
"6.0.4-2+deb13u2~bpo12+1",
"6.0.4-2+deb13u3",
"6.0.4-2+deb13u3~bpo12+1",
"6.0.4-2+deb13u4",
"6.0.4-2+deb13u4~bpo12+1",
"6.0.4-2+deb13u5",
"6.0.4-2+deb13u5~bpo12+1",
"6.0.4-2+deb13u6~bpo12+1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-34178.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "6.0.6-3"
}
]
}
],
"package": {
"name": "incus",
"purl": "pkg:deb/debian/incus?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"6.0.4-2",
"6.0.4-3",
"6.0.5-1",
"6.0.5-2",
"6.0.5-3",
"6.0.5-4",
"6.0.5-5",
"6.0.5-6",
"6.0.5-7",
"6.0.5-8",
"6.0.6-1",
"6.0.6-2"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-34178.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "lxd",
"purl": "pkg:deb/debian/lxd?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"5.0.2+git20231211.1364ae4-1",
"5.0.2+git20231211.1364ae4-2",
"5.0.2+git20231211.1364ae4-3",
"5.0.2+git20231211.1364ae4-4",
"5.0.2+git20231211.1364ae4-5",
"5.0.2+git20231211.1364ae4-6",
"5.0.2+git20231211.1364ae4-7",
"5.0.2+git20231211.1364ae4-8",
"5.0.2+git20231211.1364ae4-9",
"5.0.2-5",
"5.0.2-5+deb12u1",
"5.0.2-5+deb12u2",
"5.0.2-5+deb12u3",
"5.0.2-5+deb12u4",
"5.0.2-5+deb12u5",
"5.0.2-5+deb12u6",
"5.0.2-6"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-34178.json"
},
"ecosystem_specific": {
"urgency": "end-of-life"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "5.0.2+git20231211.1364ae4-9+deb13u5"
}
]
}
],
"package": {
"name": "lxd",
"purl": "pkg:deb/debian/lxd?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"5.0.2+git20231211.1364ae4-9",
"5.0.2+git20231211.1364ae4-9+deb13u1",
"5.0.2+git20231211.1364ae4-9+deb13u2",
"5.0.2+git20231211.1364ae4-9+deb13u3",
"5.0.2+git20231211.1364ae4-9+deb13u4"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-34178.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #55966 · Revision 1
- Added to Heist Feed
- Publisher date