Incus has a Nil-Pointer Dereference Panic via Instance Backup Import (volume omitted)

{
  "id": "817108c2b2246c8f2c1b10ce0346ffae11d98afe32f4fbeda2c66bd852ab5efd",
  "url": "https://osv.dev/vulnerability/CVE-2026-47753",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Incus has a Nil-Pointer Dereference Panic via Instance Backup Import (volume omitted)",
    "summary": "Incus is a system container and virtual machine manager. Prior to version 7.1.0, `(*backend).CreateInstanceFromBackup` in `internal/server/storage/backend.go` contains a nil-pointer dereference that an authenticated user with permission to create instances in any project can trigger remotely by uploading a crafted backup tarball. The Incus daemon panics and the process crashes, causing denial of service to every project on that cluster member. This is a sibling of `GHSA-fwj8-62r8-8p8m`, `GHSA-r7w7-mmxr-47r9`, and `GHSA-x5r6-jr56-89pv` (all assigned 2026-05-04). Those patches added guards on adjacent fields of the same `backup/config.Config` struct; the `Volume` field on the instance-import path was missed. Version 7.1.0 contains an updated patch.",
    "evidence": "osv:CVE-2026-47753",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-47753",
      "aliases": [
        "CVE-2026-47753",
        "GHSA-8g7m-96c8-8wwc",
        "GO-2026-5252"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/lxc/incus",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "42da2b16a4c8ed23f7b3bc50d7736d795f9a963a"
                },
                {
                  "fixed": "98e64f0a6fcfdc9676eea0246418d490c53297bf"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "7.1.0"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "range": [
                      {
                        "fixed": "98e64f0a6fcfdc9676eea0246418d490c53297bf"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v7.0.0",
            "v6.23.0",
            "v6.22.0",
            "v6.21.0",
            "v6.20.0",
            "v6.19.1",
            "v6.19.0",
            "v6.18.0",
            "v6.17.0",
            "v6.16.0",
            "v6.14.0",
            "v6.15.0",
            "v6.13.0",
            "v6.12.0",
            "v6.11.0",
            "v6.10.1",
            "v6.10.0",
            "v6.9.0",
            "v6.8.0",
            "v6.7.0",
            "v6.6.0",
            "v6.5.0",
            "v6.4.0",
            "v6.3.0",
            "v6.2.0",
            "v6.0.0",
            "v6.1.0",
            "v0.7.0",
            "v0.6.0",
            "v0.5.1",
            "v0.5.0",
            "v0.4.0",
            "v0.3.0",
            "v0.2.0",
            "v0.1.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-47753.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:24.813425762Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/47xxx/CVE-2026-47753.json",
        "https://github.com/lxc/incus/security/advisories/GHSA-8g7m-96c8-8wwc",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-47753",
        "https://github.com/lxc/incus/commit/98e64f0a6fcfdc9676eea0246418d490c53297bf"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-476"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/47xxx/CVE-2026-47753.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-47753",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 491493,
  "published_at": "2026-08-21T14:14:12.28+00:00"
}