UBUNTU-CVE-2026-19816

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Source
https://ubuntu.com/security/CVE-2026-19816
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-19816.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-19816
Upstream
Withdrawn
2026-09-24T15:55:22Z
Published
2026-09-14T20:16:00Z
Modified
2026-09-24T18:30:06Z
Severity
  • 7.1 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

A flaw was found in PackageKit. PackageKit skips the polkit authorization check for transactions carrying the SIMULATE (dry-run) flag. In the dnf5 backend, the RepoRemove handler ignores that contract and always executes the real transaction because its guard is written as (role == REPO_REMOVE || !SIMULATE), which is always true for RepoRemove. An unprivileged local user can therefore perform a genuine package uninstall while claiming to simulate. This vulnerability only affects systems using PackageKit with the dnf5 backend.

References

Affected packages

Ubuntu:22.04:LTS
packagekit

Package

Name
packagekit
Purl
pkg:deb/ubuntu/packagekit?arch=source&distro=jammy

Affected ranges

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

Affected versions

1.*
1.2.2-2ubuntu3
1.2.4-1ubuntu1
1.2.4-1ubuntu2
1.2.5-1ubuntu1
1.2.5-2ubuntu1
1.2.5-2ubuntu2
1.2.5-2ubuntu3
1.2.5-2ubuntu3.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "gir1.2-packagekitglib-1.0",
            "binary_version": "1.2.5-2ubuntu3.1"
        },
        {
            "binary_name": "gstreamer1.0-packagekit",
            "binary_version": "1.2.5-2ubuntu3.1"
        },
        {
            "binary_name": "libpackagekit-glib2-18",
            "binary_version": "1.2.5-2ubuntu3.1"
        },
        {
            "binary_name": "packagekit",
            "binary_version": "1.2.5-2ubuntu3.1"
        },
        {
            "binary_name": "packagekit-command-not-found",
            "binary_version": "1.2.5-2ubuntu3.1"
        },
        {
            "binary_name": "packagekit-docs",
            "binary_version": "1.2.5-2ubuntu3.1"
        },
        {
            "binary_name": "packagekit-gtk3-module",
            "binary_version": "1.2.5-2ubuntu3.1"
        },
        {
            "binary_name": "packagekit-tools",
            "binary_version": "1.2.5-2ubuntu3.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-19816.json"
Ubuntu:24.04:LTS
packagekit

Package

Name
packagekit
Purl
pkg:deb/ubuntu/packagekit?arch=source&distro=noble

Affected ranges

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

Affected versions

1.*
1.2.7-1
1.2.8-1
1.2.8-1build1
1.2.8-2
1.2.8-2build2
1.2.8-2build3
1.2.8-2ubuntu1
1.2.8-2ubuntu1.1
1.2.8-2ubuntu1.2
1.2.8-2ubuntu1.4
1.2.8-2ubuntu1.5

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "gir1.2-packagekitglib-1.0",
            "binary_version": "1.2.8-2ubuntu1.5"
        },
        {
            "binary_name": "gstreamer1.0-packagekit",
            "binary_version": "1.2.8-2ubuntu1.5"
        },
        {
            "binary_name": "libpackagekit-glib2-18",
            "binary_version": "1.2.8-2ubuntu1.5"
        },
        {
            "binary_name": "packagekit",
            "binary_version": "1.2.8-2ubuntu1.5"
        },
        {
            "binary_name": "packagekit-command-not-found",
            "binary_version": "1.2.8-2ubuntu1.5"
        },
        {
            "binary_name": "packagekit-docs",
            "binary_version": "1.2.8-2ubuntu1.5"
        },
        {
            "binary_name": "packagekit-gtk3-module",
            "binary_version": "1.2.8-2ubuntu1.5"
        },
        {
            "binary_name": "packagekit-tools",
            "binary_version": "1.2.8-2ubuntu1.5"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-19816.json"
Ubuntu:26.04:LTS
packagekit

Package

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

Affected ranges

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

Affected versions

1.*
1.3.1-1
1.3.2-1
1.3.3-1
1.3.4-1
1.3.4-3
1.3.4-3ubuntu1
1.3.4-3ubuntu1.1
1.3.4-3ubuntu1.2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "gir1.2-packagekitglib-1.0",
            "binary_version": "1.3.4-3ubuntu1.2"
        },
        {
            "binary_name": "gstreamer1.0-packagekit",
            "binary_version": "1.3.4-3ubuntu1.2"
        },
        {
            "binary_name": "libpackagekit-glib2-18",
            "binary_version": "1.3.4-3ubuntu1.2"
        },
        {
            "binary_name": "packagekit",
            "binary_version": "1.3.4-3ubuntu1.2"
        },
        {
            "binary_name": "packagekit-command-not-found",
            "binary_version": "1.3.4-3ubuntu1.2"
        },
        {
            "binary_name": "packagekit-docs",
            "binary_version": "1.3.4-3ubuntu1.2"
        },
        {
            "binary_name": "packagekit-gtk3-module",
            "binary_version": "1.3.4-3ubuntu1.2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-19816.json"
Ubuntu:Pro:16.04:LTS
packagekit

Package

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

Affected ranges

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

Affected versions

0.*
0.8.17-4ubuntu6~gcc5.3
0.8.17-4ubuntu6~gcc5.4ubuntu1
0.8.17-4ubuntu6~gcc5.4ubuntu1.1
0.8.17-4ubuntu6~gcc5.4ubuntu1.2
0.8.17-4ubuntu6~gcc5.4ubuntu1.3
0.8.17-4ubuntu6~gcc5.4ubuntu1.4
0.8.17-4ubuntu6~gcc5.4ubuntu1.5
0.8.17-4ubuntu6~gcc5.4ubuntu1.5+esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "gir1.2-packagekitglib-1.0",
            "binary_version": "0.8.17-4ubuntu6~gcc5.4ubuntu1.5+esm1"
        },
        {
            "binary_name": "gstreamer1.0-packagekit",
            "binary_version": "0.8.17-4ubuntu6~gcc5.4ubuntu1.5+esm1"
        },
        {
            "binary_name": "libpackagekit-glib2-16",
            "binary_version": "0.8.17-4ubuntu6~gcc5.4ubuntu1.5+esm1"
        },
        {
            "binary_name": "packagekit",
            "binary_version": "0.8.17-4ubuntu6~gcc5.4ubuntu1.5+esm1"
        },
        {
            "binary_name": "packagekit-backend-aptcc",
            "binary_version": "0.8.17-4ubuntu6~gcc5.4ubuntu1.5+esm1"
        },
        {
            "binary_name": "packagekit-backend-smart",
            "binary_version": "0.8.17-4ubuntu6~gcc5.4ubuntu1.5+esm1"
        },
        {
            "binary_name": "packagekit-docs",
            "binary_version": "0.8.17-4ubuntu6~gcc5.4ubuntu1.5+esm1"
        },
        {
            "binary_name": "packagekit-gtk3-module",
            "binary_version": "0.8.17-4ubuntu6~gcc5.4ubuntu1.5+esm1"
        },
        {
            "binary_name": "packagekit-tools",
            "binary_version": "0.8.17-4ubuntu6~gcc5.4ubuntu1.5+esm1"
        },
        {
            "binary_name": "python3-packagekit",
            "binary_version": "0.8.17-4ubuntu6~gcc5.4ubuntu1.5+esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-19816.json"
Ubuntu:Pro:18.04:LTS
packagekit

Package

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

Affected ranges

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

Affected versions

1.*
1.1.7-1
1.1.9-1
1.1.9-1ubuntu1
1.1.9-1ubuntu2
1.1.9-1ubuntu2.18.04.1
1.1.9-1ubuntu2.18.04.3
1.1.9-1ubuntu2.18.04.4
1.1.9-1ubuntu2.18.04.5
1.1.9-1ubuntu2.18.04.6
1.1.9-1ubuntu2.18.04.6+esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "gir1.2-packagekitglib-1.0",
            "binary_version": "1.1.9-1ubuntu2.18.04.6+esm1"
        },
        {
            "binary_name": "gstreamer1.0-packagekit",
            "binary_version": "1.1.9-1ubuntu2.18.04.6+esm1"
        },
        {
            "binary_name": "libpackagekit-glib2-18",
            "binary_version": "1.1.9-1ubuntu2.18.04.6+esm1"
        },
        {
            "binary_name": "packagekit",
            "binary_version": "1.1.9-1ubuntu2.18.04.6+esm1"
        },
        {
            "binary_name": "packagekit-command-not-found",
            "binary_version": "1.1.9-1ubuntu2.18.04.6+esm1"
        },
        {
            "binary_name": "packagekit-docs",
            "binary_version": "1.1.9-1ubuntu2.18.04.6+esm1"
        },
        {
            "binary_name": "packagekit-gtk3-module",
            "binary_version": "1.1.9-1ubuntu2.18.04.6+esm1"
        },
        {
            "binary_name": "packagekit-tools",
            "binary_version": "1.1.9-1ubuntu2.18.04.6+esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-19816.json"
Ubuntu:Pro:20.04:LTS
packagekit

Package

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

Affected ranges

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

Affected versions

1.*
1.1.12-5ubuntu4
1.1.13-1
1.1.13-2
1.1.13-2build1
1.1.13-2ubuntu1
1.1.13-2ubuntu1.1
1.1.13-2ubuntu1.1+esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "gir1.2-packagekitglib-1.0",
            "binary_version": "1.1.13-2ubuntu1.1+esm1"
        },
        {
            "binary_name": "gstreamer1.0-packagekit",
            "binary_version": "1.1.13-2ubuntu1.1+esm1"
        },
        {
            "binary_name": "libpackagekit-glib2-18",
            "binary_version": "1.1.13-2ubuntu1.1+esm1"
        },
        {
            "binary_name": "packagekit",
            "binary_version": "1.1.13-2ubuntu1.1+esm1"
        },
        {
            "binary_name": "packagekit-command-not-found",
            "binary_version": "1.1.13-2ubuntu1.1+esm1"
        },
        {
            "binary_name": "packagekit-docs",
            "binary_version": "1.1.13-2ubuntu1.1+esm1"
        },
        {
            "binary_name": "packagekit-gtk3-module",
            "binary_version": "1.1.13-2ubuntu1.1+esm1"
        },
        {
            "binary_name": "packagekit-tools",
            "binary_version": "1.1.13-2ubuntu1.1+esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-19816.json"