UBUNTU-CVE-2026-33542

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Source

https://ubuntu.com/security/CVE-2026-33542

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33542.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-33542

Upstream

CVE-2026-33542

Published

2026-03-26T23:16:00Z

Modified

2026-07-02T18:02:55Z

Severity

5.7 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:H/VA:N/SC:L/SI:H/SA:N/E:P CVSS Calculator
4.8 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N CVSS Calculator
Ubuntu - medium

Summary

[none]

Details

Incus is a system container and virtual machine manager. Prior to version 6.23.0, a lack of validation of the image fingerprint when downloading from simplestreams image servers opens the door to image cache poisoning and under very narrow circumstances exposes other tenants to running attacker controlled images rather than the expected one. Version 6.23.0 patches the issue.

References

Affected packages

Ubuntu:20.04:LTS

lxd

Package

Name: lxd
Purl: pkg:deb/ubuntu/lxd?arch=source&distro=focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Affected versions

1:0.*

1:0.7

1:0.8

1:0.9

1:0.10

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "lxd",
            "binary_version": "1:0.10"
        },
        {
            "binary_name": "lxd-client",
            "binary_version": "1:0.10"
        },
        {
            "binary_name": "lxd-tools",
            "binary_version": "1:0.10"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33542.json"

Ubuntu:25.10

incus

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Affected versions

6.*

6.0.3-4

6.0.4-2

Ecosystem specific

{
    "binaries": [
        {
            "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",
            "binary_version": "6.0.4-2"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33542.json"

Ubuntu:Pro:16.04:LTS

lxd

Package

Name: lxd
Purl: pkg:deb/ubuntu/lxd?arch=source&distro=esm-infra-legacy%2Fxenial

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Affected versions

0.*

0.20-0ubuntu4

0.21-0ubuntu3

0.21-0ubuntu5

0.22-0ubuntu1

0.22-0ubuntu2

0.23-0ubuntu1

0.23-0ubuntu2

0.23-0ubuntu3

0.24-0ubuntu2

0.24-0ubuntu3

0.24-0ubuntu4

0.25-0ubuntu1

0.26-0ubuntu2

0.26-0ubuntu3

0.27-0ubuntu1

0.27-0ubuntu2

2.*

2.0.0~beta1-0ubuntu3

2.0.0~beta1-0ubuntu4

2.0.0~beta2-0ubuntu1

2.0.0~beta2-0ubuntu2

2.0.0~beta3-0ubuntu1

2.0.0~beta3-0ubuntu2

2.0.0~beta3-0ubuntu3

2.0.0~beta3-0ubuntu4

2.0.0~beta4-0ubuntu1

2.0.0~beta4-0ubuntu2

2.0.0~beta4-0ubuntu3

2.0.0~beta4-0ubuntu4

2.0.0~beta4-0ubuntu5

2.0.0~beta4-0ubuntu6

2.0.0~beta4-0ubuntu7

2.0.0~rc1-0ubuntu1

2.0.0~rc1-0ubuntu2

2.0.0~rc1-0ubuntu3

2.0.0~rc2-0ubuntu2

2.0.0~rc2-0ubuntu3

2.0.0~rc3-0ubuntu1

2.0.0~rc3-0ubuntu2

2.0.0~rc3-0ubuntu3

2.0.0~rc3-0ubuntu4

2.0.0~rc4-0ubuntu1

2.0.0~rc5-0ubuntu1

2.0.0~rc6-0ubuntu1

2.0.0~rc6-0ubuntu2

2.0.0~rc7-0ubuntu1

2.0.0~rc7-0ubuntu2

2.0.0~rc8-0ubuntu1

2.0.0~rc8-0ubuntu2

2.0.0~rc8-0ubuntu3

2.0.0~rc8-0ubuntu5

2.0.0~rc8-0ubuntu6

2.0.0~rc8-0ubuntu7

2.0.0~rc9-0ubuntu2

2.0.0~rc9-0ubuntu3

2.0.0~rc9-0ubuntu4

2.0.0~rc9-0ubuntu5

2.0.0-0ubuntu1

2.0.0-0ubuntu2

2.0.0-0ubuntu3

2.0.0-0ubuntu4

2.0.1-0ubuntu1~16.04.1

2.0.2-0ubuntu1~16.04.1

2.0.3-0ubuntu1~ubuntu16.04.2

2.0.4-0ubuntu1~ubuntu16.04.1

2.0.5-0ubuntu1~ubuntu16.04.1

2.0.8-0ubuntu1~ubuntu16.04.1

2.0.8-0ubuntu1~ubuntu16.04.2

2.0.9-0ubuntu1~16.04.1

2.0.9-0ubuntu1~16.04.2

2.0.10-0ubuntu1~16.04.1

2.0.10-0ubuntu1~16.04.2

2.0.11-0ubuntu1~16.04.2

2.0.11-0ubuntu1~16.04.4

2.0.11-0ubuntu1~16.04.4+esm1

2.0.11-0ubuntu1~16.04.4+esm2

2.0.11-0ubuntu1~16.04.4+esm3

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "golang-github-lxc-lxd-dev",
            "binary_version": "2.0.11-0ubuntu1~16.04.4+esm3"
        },
        {
            "binary_name": "lxc2",
            "binary_version": "2.0.11-0ubuntu1~16.04.4+esm3"
        },
        {
            "binary_name": "lxd",
            "binary_version": "2.0.11-0ubuntu1~16.04.4+esm3"
        },
        {
            "binary_name": "lxd-client",
            "binary_version": "2.0.11-0ubuntu1~16.04.4+esm3"
        },
        {
            "binary_name": "lxd-tools",
            "binary_version": "2.0.11-0ubuntu1~16.04.4+esm3"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33542.json"

Ubuntu:Pro:18.04:LTS

lxd

Package

Name: lxd
Purl: pkg:deb/ubuntu/lxd?arch=source&distro=esm-infra%2Fbionic

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.18-0ubuntu6

2.19-0ubuntu1

2.20-0ubuntu3

2.20-0ubuntu4

2.21-0ubuntu1

2.21-0ubuntu2

2.21-0ubuntu3

2.21-0ubuntu4

3.*

3.0.0~beta2-0ubuntu3

3.0.0~beta3-0ubuntu3

3.0.0~beta5-0ubuntu2

3.0.0~beta7-0ubuntu1

3.0.0-0ubuntu1

3.0.0-0ubuntu2

3.0.0-0ubuntu3

3.0.0-0ubuntu4

3.0.1-0ubuntu1~18.04.1

3.0.2-0ubuntu1~18.04.1

3.0.3-0ubuntu1~18.04.1

3.0.3-0ubuntu1~18.04.2

3.0.3-0ubuntu1~18.04.2+esm1

3.0.3-0ubuntu1~18.04.2+esm2

3.0.3-0ubuntu1~18.04.2+esm3

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "lxd",
            "binary_version": "3.0.3-0ubuntu1~18.04.2+esm3"
        },
        {
            "binary_name": "lxd-client",
            "binary_version": "3.0.3-0ubuntu1~18.04.2+esm3"
        },
        {
            "binary_name": "lxd-tools",
            "binary_version": "3.0.3-0ubuntu1~18.04.2+esm3"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33542.json"

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

0 Unknown 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_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",
            "binary_version": "6.0.0-1ubuntu0.3+esm3"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33542.json"

Ubuntu:Pro:26.04:LTS

incus

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Affected versions

6.*

6.0.4-2

6.0.5-8

6.0.5-8ubuntu0.26.04.1~esm1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "golang-github-lxc-incus-dev",
            "binary_version": "6.0.5-8ubuntu0.26.04.1~esm1"
        },
        {
            "binary_name": "incus",
            "binary_version": "6.0.5-8ubuntu0.26.04.1~esm1"
        },
        {
            "binary_name": "incus-agent",
            "binary_version": "6.0.5-8ubuntu0.26.04.1~esm1"
        },
        {
            "binary_name": "incus-base",
            "binary_version": "6.0.5-8ubuntu0.26.04.1~esm1"
        },
        {
            "binary_name": "incus-client",
            "binary_version": "6.0.5-8ubuntu0.26.04.1~esm1"
        },
        {
            "binary_name": "incus-extra",
            "binary_version": "6.0.5-8ubuntu0.26.04.1~esm1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33542.json"