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DEBIAN-CVE-2026-9640

Type: advisorySource: OSV1 source record

A privilege escalation vulnerability exists in LXD from 6.0 before 6.9, 5.21.0 before 5.21.5, and 5.0.0 before 5.0.7 regarding the handling of project-restriction policies during snapshot restoration.. An authenticated project operator in a restricted multi-tenant environment can bypass policy restrictions by importing a maliciously crafted instance backup containing restricted configuration keys within a snapshot. When the snapshot is restored, these restricted keys are applied to the live instance without policy validation. Starting the modified instance grants the operator unauthorized host root access.

Announced Group revision 1
Original source ↗

DEBIAN-CVE-2026-9640

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-2026-9640

lxd

Source reference: /affected/0/package/name

Affected versions
5.0.2+git20231211.1364ae4-1

Source reference: /affected/0/versions

5.0.2+git20231211.1364ae4-2

Source reference: /affected/0/versions

5.0.2+git20231211.1364ae4-3

Source reference: /affected/0/versions

5.0.2+git20231211.1364ae4-4

Source reference: /affected/0/versions

5.0.2+git20231211.1364ae4-5

Source reference: /affected/0/versions

5.0.2+git20231211.1364ae4-6

Source reference: /affected/0/versions

5.0.2+git20231211.1364ae4-7

Source reference: /affected/0/versions

5.0.2+git20231211.1364ae4-8

Source reference: /affected/0/versions

5.0.2+git20231211.1364ae4-9

Source reference: /affected/0/versions

5.0.2-5

Source reference: /affected/0/versions

5.0.2-5+deb12u1

Source reference: /affected/0/versions

5.0.2-5+deb12u2

Source reference: /affected/0/versions

5.0.2-5+deb12u3

Source reference: /affected/0/versions

5.0.2-5+deb12u4

Source reference: /affected/0/versions

5.0.2-5+deb12u5

Source reference: /affected/0/versions

5.0.2-5+deb12u6

Source reference: /affected/0/versions

5.0.2-6

Source reference: /affected/0/versions

Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

lxd

Source reference: /affected/1/package/name

Affected versions
5.0.2+git20231211.1364ae4-9

Source reference: /affected/1/versions

5.0.2+git20231211.1364ae4-9+deb13u1

Source reference: /affected/1/versions

5.0.2+git20231211.1364ae4-9+deb13u2

Source reference: /affected/1/versions

5.0.2+git20231211.1364ae4-9+deb13u3

Source reference: /affected/1/versions

5.0.2+git20231211.1364ae4-9+deb13u4

Source reference: /affected/1/versions

5.0.2+git20231211.1364ae4-9+deb13u5

Source reference: /affected/1/versions

5.0.2+git20231211.1364ae4-9+deb13u6

Source reference: /affected/1/versions

Fixed versions
5.0.2+git20231211.1364ae4-9+deb13u7

Source reference: /affected/1/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"
          }
        ]
      }
    ],
    "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-2026-9640.json"
    },
    "ecosystem_specific": {
      "urgency": "end-of-life"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "5.0.2+git20231211.1364ae4-9+deb13u7"
          }
        ]
      }
    ],
    "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",
      "5.0.2+git20231211.1364ae4-9+deb13u5",
      "5.0.2+git20231211.1364ae4-9+deb13u6"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-9640.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event
#58584 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement

Revision history

  1. DEBIAN-CVE-2026-9640 · Revision 1Source updated