UBUNTU-CVE-2026-40195

See a problem?
Please try reporting it to the source first.
Source
https://ubuntu.com/security/CVE-2026-40195
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-40195.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-40195
Upstream
  • CVE-2026-40195
Published
2026-05-06T21:16:00Z
Modified
2026-05-20T16:25:39.438093355Z
Severity
  • 7.1 (High) CVSS_V4 - 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 CVSS Calculator
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

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.

References

Affected packages

Ubuntu:Pro:24.04:LTS / incus

Package

Name
incus
Purl
pkg:deb/ubuntu/incus?arch=source&distro=esm-apps%2Fnoble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.4-1ubuntu1
0.5.1-1
0.5.1-3
0.6-1
6.*
6.0.0-1
6.0.0-1ubuntu0.1
6.0.0-1ubuntu0.2
6.0.0-1ubuntu0.2+esm1
6.0.0-1ubuntu0.3
6.0.0-1ubuntu0.3+esm1
6.0.0-1ubuntu0.3+esm2
6.0.0-1ubuntu0.3+esm3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "6.0.0-1ubuntu0.3+esm3",
            "binary_name": "golang-github-lxc-incus-dev"
        },
        {
            "binary_version": "6.0.0-1ubuntu0.3+esm3",
            "binary_name": "incus"
        },
        {
            "binary_version": "6.0.0-1ubuntu0.3+esm3",
            "binary_name": "incus-agent"
        },
        {
            "binary_version": "6.0.0-1ubuntu0.3+esm3",
            "binary_name": "incus-client"
        },
        {
            "binary_version": "6.0.0-1ubuntu0.3+esm3",
            "binary_name": "incus-migrate"
        },
        {
            "binary_version": "6.0.0-1ubuntu0.3+esm3",
            "binary_name": "incus-tools"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-40195.json"

Ubuntu:25.10 / incus

Package

Name
incus
Purl
pkg:deb/ubuntu/incus?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

6.*
6.0.3-4
6.0.4-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "6.0.4-2",
            "binary_name": "golang-github-lxc-incus-dev"
        },
        {
            "binary_version": "6.0.4-2",
            "binary_name": "incus"
        },
        {
            "binary_version": "6.0.4-2",
            "binary_name": "incus-agent"
        },
        {
            "binary_version": "6.0.4-2",
            "binary_name": "incus-base"
        },
        {
            "binary_version": "6.0.4-2",
            "binary_name": "incus-client"
        },
        {
            "binary_version": "6.0.4-2",
            "binary_name": "incus-extra"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-40195.json"

Ubuntu:26.04:LTS / incus

Package

Name
incus
Purl
pkg:deb/ubuntu/incus?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

6.*
6.0.4-2
6.0.5-8

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "6.0.5-8",
            "binary_name": "golang-github-lxc-incus-dev"
        },
        {
            "binary_version": "6.0.5-8",
            "binary_name": "incus"
        },
        {
            "binary_version": "6.0.5-8",
            "binary_name": "incus-agent"
        },
        {
            "binary_version": "6.0.5-8",
            "binary_name": "incus-base"
        },
        {
            "binary_version": "6.0.5-8",
            "binary_name": "incus-client"
        },
        {
            "binary_version": "6.0.5-8",
            "binary_name": "incus-extra"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-40195.json"