{"id":"CVE-2026-48754","summary":"Incus: Nil-pointer dereference in createDependentVolumesFromBackup on disk.{Volume,VolumeSnapshots,Pool}","details":"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.","aliases":["GHSA-4xg6-52mh-fpw8","GO-2026-5800"],"modified":"2026-08-27T03:30:38.481830930Z","published":"2026-08-21T14:36:16.011Z","related":["openSUSE-SU-2026:21483-1"],"database_specific":{"cwe_ids":["CWE-476"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48754.json","cna_assigner":"GitHub_M"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48754.json"},{"type":"ADVISORY","url":"https://github.com/lxc/incus/security/advisories/GHSA-4xg6-52mh-fpw8"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-48754"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/lxc/incus","events":[{"introduced":"0"},{"fixed":"42da2b16a4c8ed23f7b3bc50d7736d795f9a963a"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"7.1.0"}],"source":"AFFECTED_FIELD"}}],"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-2026-48754.json"}}],"schema_version":"1.9.0","severity":[{"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"}]}