{"id":"CVE-2026-48754","title":"Incus is a system container and virtual machine manager","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-volu…","severity":"low","cwe":["CWE-476"],"vendor":"lxc","product":"github.com/lxc/incus/v7/cmd/incusd","affected":["github.com/lxc/incus/v7/cmd/incusd < 7.1.0"],"patched":["github.com/lxc/incus/v7/cmd/incusd 7.1.0"],"published":"2026-08-21","updated":"2026-09-18","sourceUpdated":"2026-09-18T20:09:01.757","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-48754","references":[{"url":"https://github.com/lxc/incus/security/advisories/GHSA-4xg6-52mh-fpw8","label":"security-advisories@github.com"},{"url":"https://github.com/lxc/incus/security/advisories/GHSA-4xg6-52mh-fpw8","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"},{"url":"https://github.com/advisories/GHSA-4xg6-52mh-fpw8"}],"tags":["nvd","ghsa","go"],"epss":0.00281,"epssPercentile":0.20801,"ecosystem":"go","ingestedAt":"2026-06-29T13:24:35.286Z","slug":"CVE-2026-48754","body":"## Overview\n\nIncus 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Package advisory (CVE-2026-48754)\n\nAffected packages:\n\n- `github.com/lxc/incus/v7/cmd/incusd < 7.1.0`\n\nPatched in:\n\n- `github.com/lxc/incus/v7/cmd/incusd 7.1.0`\n\nSource: https://github.com/advisories/GHSA-4xg6-52mh-fpw8","depth":"sunlit","depthScore":14,"depthScoreParts":{"impact":13.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}