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DEBIAN-CVE-2026-34177

Type: advisorySource: OSV1 source record

Canonical LXD versions 4.12 through 6.7 contain an incomplete denylist in isVMLowLevelOptionForbidden (lxd/project/limits/permissions.go), which omits raw.apparmor and raw.qemu.conf from the set of keys blocked under the restricted.virtual-machines.lowlevel=block project restriction. A remote attacker with can_edit permission on a VM instance in a restricted project can inject an AppArmor rule and a QEMU chardev configuration that bridges the LXD Unix socket into the guest VM, enabling privilege escalation to LXD cluster administrator and subsequently to host root.

Announced Source revision 1
Original source ↗

DEBIAN-CVE-2026-34177

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-2026-34177

incus

Source reference: /affected/0/package/name

Affected versions
Not stated in this record
Fixed versions
6.0.2-1

Source reference: /affected/0/ranges

Prerequisites
Not stated in this record

incus

Source reference: /affected/1/package/name

Affected versions
Not stated in this record
Fixed versions
6.0.2-1

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/versions

5.0.2+git20231211.1364ae4-2

Source reference: /affected/2/versions

5.0.2+git20231211.1364ae4-3

Source reference: /affected/2/versions

5.0.2+git20231211.1364ae4-4

Source reference: /affected/2/versions

5.0.2+git20231211.1364ae4-5

Source reference: /affected/2/versions

5.0.2+git20231211.1364ae4-6

Source reference: /affected/2/versions

5.0.2+git20231211.1364ae4-7

Source reference: /affected/2/versions

5.0.2+git20231211.1364ae4-8

Source reference: /affected/2/versions

5.0.2+git20231211.1364ae4-9

Source reference: /affected/2/versions

5.0.2-5

Source reference: /affected/2/versions

5.0.2-5+deb12u1

Source reference: /affected/2/versions

5.0.2-5+deb12u2

Source reference: /affected/2/versions

5.0.2-5+deb12u3

Source reference: /affected/2/versions

5.0.2-5+deb12u4

Source reference: /affected/2/versions

5.0.2-5+deb12u5

Source reference: /affected/2/versions

5.0.2-5+deb12u6

Source reference: /affected/2/versions

5.0.2-6

Source 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/versions

5.0.2+git20231211.1364ae4-9+deb13u1

Source reference: /affected/3/versions

5.0.2+git20231211.1364ae4-9+deb13u2

Source reference: /affected/3/versions

5.0.2+git20231211.1364ae4-9+deb13u3

Source reference: /affected/3/versions

5.0.2+git20231211.1364ae4-9+deb13u4

Source 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": "6.0.2-1"
          }
        ]
      }
    ],
    "package": {
      "name": "incus",
      "purl": "pkg:deb/debian/incus?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-34177.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "6.0.2-1"
          }
        ]
      }
    ],
    "package": {
      "name": "incus",
      "purl": "pkg:deb/debian/incus?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-34177.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-2026-34177.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-2026-34177.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event
#56820 · Revision 1
Added to Heist Feed
Publisher date
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