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.

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)

The remote Debian 12 / 13 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-6247 advisory.

    - -------------------------------------------------------------------------     Debian Security Advisory DSA-6247-1                   security@debian.org     https://www.debian.org/security/                       Moritz Muehlenhoff     May 04, 2026                          https://www.debian.org/security/faq
    - -------------------------------------------------------------------------

    Package        : lxd     CVE ID         : CVE-2026-40197 CVE-2026-40251 CVE-2026-41648                      CVE-2026-41684 CVE-2026-41685

    Multiple security issues were discovered in LXD, a system container     and virtual machine manager, which could result in denial of service.

    For the oldstable distribution (bookworm), these problems have been fixed     in version 5.0.2-5+deb12u6.

    For the stable distribution (trixie), these problems have been fixed in     version 5.0.2+git20231211.1364ae4-9+deb13u6.

    We recommend that you upgrade your lxd packages.

    For the detailed security status of lxd please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/lxd

    Further information about Debian Security Advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://www.debian.org/security/

    Mailing list: debian-security-announce@lists.debian.org

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Debian 13 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-6244 advisory.

    - -------------------------------------------------------------------------     Debian Security Advisory DSA-6244-1                   security@debian.org     https://www.debian.org/security/                       Moritz Muehlenhoff     May 02, 2026                          https://www.debian.org/security/faq
    - -------------------------------------------------------------------------

    Package        : incus     CVE ID         : CVE-2026-40195 CVE-2026-40197 CVE-2026-40243 CVE-2026-40251                      CVE-2026-41647 CVE-2026-41648 CVE-2026-41684 CVE-2026-41685

    Multiple security issues were discovered in Incus, a system container     and virtual machine manager, which could result in denial of service,

    For the stable distribution (trixie), these problems have been fixed in     version 6.0.4-2+deb13u7.

    We recommend that you upgrade your incus packages.

    For the detailed security status of incus please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/incus

    Further information about Debian Security Advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://www.debian.org/security/

    Mailing list: debian-security-announce@lists.debian.org

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - 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)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Severity
441058	SCA: security update for github.com/lxc/incus/v6/cmd/incusd (GHSA-r7w7-mmxr-47r9)	Tenable Cloud Security	SCA Checks	high
441058	SCA: security update for github.com/lxc/incus/v6/cmd/incusd (GHSA-r7w7-mmxr-47r9)	Tenable Self-Hosted Container Security	SCA Checks	high
312104	Debian dsa-6247 : golang-github-canonical-lxd-dev - security update	Nessus	Debian Local Security Checks	high
311800	Debian dsa-6244 : golang-github-lxc-incus-dev - security update	Nessus	Debian Local Security Checks	high
311689	Linux Distros Unpatched Vulnerability : CVE-2026-40197	Nessus	Misc.	high

Detections

Analytics

CVE-2026-40197

high

Tenable Plugins

high

high

high

high

high