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SCA: security update for github.com/lxc/incus/v6/cmd/incusd (GHSA-r7w7-mmxr-47r9)

high Tenable Cloud Security Plugin ID 441058

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - Incus is a system container and virtual machine manager. In versions before 7.0.0, missing validation
 logic in the storage volume import logic allows an authenticated user with access to the storage volume
 feature to cause the Incus daemon to crash. The custom volume backup import subsystem contains a nil-
 pointer dereference vulnerability during import operations. In the snapshot import loop, the daemon
 iterates over entries from `srcBackup.Config.VolumeSnapshots` and assumes that each slice element is
 initialized, then dereferences fields such as `Name`, `Config`, `Description`, `CreatedAt`, and
 `ExpiresAt` without first validating the element itself. Because the yaml unmarshaler accepts explicit
 null array elements from an attacker-controlled index.yaml and converts them into nil pointers inside the
 slice, an attacker can supply a backup archive containing a null entry in the volume_snapshots array. This
 causes a nil-pointer dereference during custom volume import and terminates the daemon, resulting in
 denial of service on the affected node. Repeated use of this issue can be used to keep Incus offline,
 causing a denial of service. This issue is fixed in version 7.0.0. (CVE-2026-40197)

Solution

Update the github.com/lxc/incus/v6/cmd/incusd library and its related packages to version 7.0.0 or later.

See Also

https://github.com/advisories/GHSA-r7w7-mmxr-47r9

Plugin Details

Severity: High

ID: 441058

Version: Revision 1.7

Type: Local

Family: SCA Checks

Published: 5/4/2026

Updated: 7/2/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Medium

Score: 5

Percentile: 94.15

Vendor

Vendor Severity: High

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.3

Vector: CVSS2#AV:N/AC:L/Au:S/C:N/I:N/A:C

CVSS Score Source: CVE-2026-40197

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.9

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

CVSS v4

Risk Factor: High

Base Score: 7.1

Threat Score: 5.7

Threat Vector: CVSS:4.0/E:P

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 5/4/2026

Vulnerability Publication Date: 5/4/2026

Reference Information

CVE: CVE-2026-40197

cwe: CWE-476