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.

CVSS

No CVSS.

References

Link	Resource
https://github.com/lxc/incus/security/advisories/GHSA-4xg6-52mh-fpw8
https://github.com/lxc/incus/security/advisories/GHSA-4xg6-52mh-fpw8

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-21 15:16

Updated : 2026-08-26 18:16

NVD link : CVE-2026-48754

Mitre link : CVE-2026-48754

CVE.ORG link : CVE-2026-48754

JSON object : View

Products Affected

No product.

CWE

CWE-476

NULL Pointer Dereference

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