CVE-2026-48754
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
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| lxc | incus | < 7.1.0 | affected |
Weaknesses
- CWE-476: CWE-476: NULL Pointer Dereference
References
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