LowFix available

incus — security advisory

Type: advisorySources: OSVAdvisory ID: DEBIAN-CVE-2026-48754

Incus is a system container and virtual machine manager. Prior to version 7.1.0, `(*backend).createDependentVolumesFromBackup` in `internal/server/storage/backend.go` contains a cluster of unguarded pointer derefs on every dependent-volume entry's `VolumeSnapshots[i]`, `Volume`, and `Pool` sub-fields. An authenticated user with `can_create_instances` permission on any project can crash the `incusd` daemon by uploading an instance backup tarball whose `dependent_volumes[*]` block contains a nil snapshot pointer (or omits `volume:` / `pool:`). This is a sibling-field variant of the 2026-05-04 batch fix `d768f81c0a1d985f35ae56219519822b080bf5e3` ("Properly check dependent volumes on import"). That commit added `if disk == nil` at the top of the outer loop, but did not guard the four sub-pointer fields the loop body dereferences naked. Version 7.1.0 contains an updated patch.

Products: incus
Affected 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, 6.0.6-3, 6.14.0-1~exp1, 6.15.0-1~exp1, 6.16.0-1~exp1, 6.17.0-1~exp1, 6.20.0-1~exp1, 6.21.0-1~exp1, 6.22.0-1~exp1, 6.23.0-1~exp1, 7.0.0-1, 7.0.0-1~bpo13+1, 7.0.0-2~bpo13+1
Fixed versions: 7.0.0-2
CVEs: CVE-2026-48754
Confirmed fixed CVEs: Not specified
Updated in this feed: 30 Oct 2026, 19:55 UTC · Revision 1

Source evidence

DEBIAN-CVE-2026-48754

core-osv · Original source

Published 21 Aug 2026, 15:16 UTC

osv:DEBIAN-CVE-2026-48754

incus

Fixed versions: 7.0.0-2

Complete source record

{
  "id": "5582486d3692edf09a0c3497ca0f05fe1fd90e4e737176f482184792e119f5f4",
  "url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-48754",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "DEBIAN-CVE-2026-48754",
    "summary": "Incus is a system container and virtual machine manager. Prior to version 7.1.0, `(*backend).createDependentVolumesFromBackup` in `internal/server/storage/backend.go` contains a cluster of unguarded pointer derefs on every dependent-volume entry's `VolumeSnapshots[i]`, `Volume`, and `Pool` sub-fields. An authenticated user with `can_create_instances` permission on any project can crash the `incusd` daemon by uploading an instance backup tarball whose `dependent_volumes[*]` block contains a nil snapshot pointer (or omits `volume:` / `pool:`). This is a sibling-field variant of the 2026-05-04 batch fix `d768f81c0a1d985f35ae56219519822b080bf5e3` (\"Properly check dependent volumes on import\"). That commit added `if disk == nil` at the top of the outer loop, but did not guard the four sub-pointer fields the loop body dereferences naked. Version 7.1.0 contains an updated patch.",
    "evidence": "osv:DEBIAN-CVE-2026-48754",
    "products": [
      {
        "name": {
          "value": "incus",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "7.0.0-2",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": [
          {
            "value": "6.0.4-2",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "6.0.4-3",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "6.0.5-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "6.0.5-2",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "6.0.5-3",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "6.0.5-4",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "6.0.5-5",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "6.0.5-6",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "6.0.5-7",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "6.0.5-8",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "6.0.6-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "6.0.6-2",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "6.0.6-3",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "6.14.0-1~exp1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "6.15.0-1~exp1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "6.16.0-1~exp1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "6.17.0-1~exp1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "6.20.0-1~exp1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "6.21.0-1~exp1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "6.22.0-1~exp1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "6.23.0-1~exp1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "7.0.0-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "7.0.0-1~bpo13+1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "7.0.0-2~bpo13+1",
            "evidence": "/affected/0/versions"
          }
        ]
      }
    ],
    "severity": "low",
    "structured": {
      "id": "DEBIAN-CVE-2026-48754",
      "aliases": [
        "DEBIAN-CVE-2026-48754"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "7.0.0-2"
                }
              ]
            }
          ],
          "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",
            "6.0.6-3",
            "6.14.0-1~exp1",
            "6.15.0-1~exp1",
            "6.16.0-1~exp1",
            "6.17.0-1~exp1",
            "6.20.0-1~exp1",
            "6.21.0-1~exp1",
            "6.22.0-1~exp1",
            "6.23.0-1~exp1",
            "7.0.0-1",
            "7.0.0-1~bpo13+1",
            "7.0.0-2~bpo13+1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-48754.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        }
      ],
      "modified": "2026-10-16T09:47:23.222593700Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-48754"
      ],
      "references": [
        "https://security-tracker.debian.org/tracker/CVE-2026-48754"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-48754",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 338544,
  "published_at": "2026-08-21T15:16:40.943+00:00"
}