Incus is a system container and virtual machine manager. In versions before 7.0.0, missing validation logic in the storage bucket import logic allows an authenticated user with access to the storage bucket feature to cause the Incus daemon to crash. The vulnerability is present in the backup metadata handling logic, where the daemon processes the index.yaml file from an imported archive and accesses members of the parsed backup configuration without first verifying that the configuration object was initialized. A malicious or malformed index.yaml that omits the config block causes a nil-pointer dereference during bucket import operations and terminates the daemon. 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 bucket import logic allows an authenticated user with access to the storage bucket
    feature to cause the Incus daemon to crash. The vulnerability is present in the backup metadata handling
    logic, where the daemon processes the index.yaml file from an imported archive and accesses members of the
    parsed backup configuration without first verifying that the configuration object was initialized. A
    malicious or malformed index.yaml that omits the config block causes a nil-pointer dereference during
    bucket import operations and terminates the daemon. 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-2026-40195)

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 bucket import logic allows an authenticated user with access to the storage bucket     feature to cause the Incus daemon to crash. The vulnerability is present in the backup metadata handling     logic, where the daemon processes the index.yaml file from an imported archive and accesses members of the     parsed backup configuration without first verifying that the configuration object was initialized. A     malicious or malformed index.yaml that omits the config block causes a nil-pointer dereference during     bucket import operations and terminates the daemon. 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-2026-40195)

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

ID	Name	Product	Family	Severity
441064	SCA: security update for github.com/lxc/incus/v6/cmd/incusd (GHSA-gc7j-g665-rxr9)	Tenable Cloud Security	SCA Checks	high
441064	SCA: security update for github.com/lxc/incus/v6/cmd/incusd (GHSA-gc7j-g665-rxr9)	Tenable Self-Hosted Container Security	SCA Checks	high
311800	Debian dsa-6244 : golang-github-lxc-incus-dev - security update	Nessus	Debian Local Security Checks	high
311696	Linux Distros Unpatched Vulnerability : CVE-2026-40195	Nessus	Misc.	high

Detections

Analytics

CVE-2026-40195

high

Tenable Plugins

high

high

high

high