UBUNTU-CVE-2026-91151

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Source
https://ubuntu.com/security/CVE-2026-91151
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-91151.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-91151
Upstream
Published
2026-11-12T00:00:00Z
Modified
2026-11-12T23:49:08Z
Severity
  • Ubuntu - medium
Summary
[none]
Details

A flaw was found in Cockpit. A local authenticated user with control over a target account's home directory can exploit a privileged symlink dereference vulnerability in the ssh-add-public-key.sh helper. When this helper runs with elevated privileges, it can be tricked into following attacker-controlled symlinks within the .ssh or authorized_keys paths. This allows the attacker to arbitrarily change file ownership and modes, potentially leading to local privilege escalation and impacting the integrity, confidentiality, and availability of the system.

References

Affected packages

Ubuntu:18.04:LTS
cockpit

Package

Name
cockpit
Purl
pkg:deb/ubuntu/cockpit?arch=source&distro=bionic

Affected ranges

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

Affected versions

Other
151-1
156-1
157-1
158-1
160-1
161-1
162-1
163-1
164-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "cockpit",
            "binary_version": "164-1"
        },
        {
            "binary_name": "cockpit-bridge",
            "binary_version": "164-1"
        },
        {
            "binary_name": "cockpit-dashboard",
            "binary_version": "164-1"
        },
        {
            "binary_name": "cockpit-docker",
            "binary_version": "164-1"
        },
        {
            "binary_name": "cockpit-machines",
            "binary_version": "164-1"
        },
        {
            "binary_name": "cockpit-networkmanager",
            "binary_version": "164-1"
        },
        {
            "binary_name": "cockpit-packagekit",
            "binary_version": "164-1"
        },
        {
            "binary_name": "cockpit-storaged",
            "binary_version": "164-1"
        },
        {
            "binary_name": "cockpit-system",
            "binary_version": "164-1"
        },
        {
            "binary_name": "cockpit-tests",
            "binary_version": "164-1"
        },
        {
            "binary_name": "cockpit-ws",
            "binary_version": "164-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-91151.json"
Ubuntu:20.04:LTS
cockpit

Package

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

Affected ranges

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

Affected versions

202.*
202.1-1
Other
204-1
206-1
207-1
208-1
210-1
211-1
212-1
213-1
215-1
214.*
214.1-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "cockpit",
            "binary_version": "215-1"
        },
        {
            "binary_name": "cockpit-bridge",
            "binary_version": "215-1"
        },
        {
            "binary_name": "cockpit-dashboard",
            "binary_version": "215-1"
        },
        {
            "binary_name": "cockpit-machines",
            "binary_version": "215-1"
        },
        {
            "binary_name": "cockpit-networkmanager",
            "binary_version": "215-1"
        },
        {
            "binary_name": "cockpit-packagekit",
            "binary_version": "215-1"
        },
        {
            "binary_name": "cockpit-pcp",
            "binary_version": "215-1"
        },
        {
            "binary_name": "cockpit-storaged",
            "binary_version": "215-1"
        },
        {
            "binary_name": "cockpit-system",
            "binary_version": "215-1"
        },
        {
            "binary_name": "cockpit-tests",
            "binary_version": "215-1"
        },
        {
            "binary_name": "cockpit-ws",
            "binary_version": "215-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-91151.json"
Ubuntu:22.04:LTS
cockpit

Package

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

Affected ranges

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

Affected versions

Other
252-1
256-1
257-1
258-1
259-1
260-1
261-1
262-1
263-1
264-1
264-1ubuntu0.*
264-1ubuntu0.22.04.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "cockpit",
            "binary_version": "264-1ubuntu0.22.04.1"
        },
        {
            "binary_name": "cockpit-bridge",
            "binary_version": "264-1ubuntu0.22.04.1"
        },
        {
            "binary_name": "cockpit-networkmanager",
            "binary_version": "264-1ubuntu0.22.04.1"
        },
        {
            "binary_name": "cockpit-packagekit",
            "binary_version": "264-1ubuntu0.22.04.1"
        },
        {
            "binary_name": "cockpit-pcp",
            "binary_version": "264-1ubuntu0.22.04.1"
        },
        {
            "binary_name": "cockpit-sosreport",
            "binary_version": "264-1ubuntu0.22.04.1"
        },
        {
            "binary_name": "cockpit-storaged",
            "binary_version": "264-1ubuntu0.22.04.1"
        },
        {
            "binary_name": "cockpit-system",
            "binary_version": "264-1ubuntu0.22.04.1"
        },
        {
            "binary_name": "cockpit-tests",
            "binary_version": "264-1ubuntu0.22.04.1"
        },
        {
            "binary_name": "cockpit-ws",
            "binary_version": "264-1ubuntu0.22.04.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-91151.json"
Ubuntu:24.04:LTS
cockpit

Package

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

Affected ranges

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

Affected versions

300.*
300.1-1
Other
303-1
304-1
305-1
306-1
307-1
308-1
309-1
311-1
312-1build2
314-1
310.*
310.1-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "cockpit",
            "binary_version": "314-1"
        },
        {
            "binary_name": "cockpit-bridge",
            "binary_version": "314-1"
        },
        {
            "binary_name": "cockpit-networkmanager",
            "binary_version": "314-1"
        },
        {
            "binary_name": "cockpit-packagekit",
            "binary_version": "314-1"
        },
        {
            "binary_name": "cockpit-pcp",
            "binary_version": "314-1"
        },
        {
            "binary_name": "cockpit-sosreport",
            "binary_version": "314-1"
        },
        {
            "binary_name": "cockpit-storaged",
            "binary_version": "314-1"
        },
        {
            "binary_name": "cockpit-system",
            "binary_version": "314-1"
        },
        {
            "binary_name": "cockpit-tests",
            "binary_version": "314-1"
        },
        {
            "binary_name": "cockpit-ws",
            "binary_version": "314-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-91151.json"
Ubuntu:26.04:LTS
cockpit

Package

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

Affected ranges

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

Affected versions

Other
346-1
348-1
350-1
352-1
354-1
355-1
356-1
360-1
353.*
353.1-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "cockpit",
            "binary_version": "360-1"
        },
        {
            "binary_name": "cockpit-bridge",
            "binary_version": "360-1"
        },
        {
            "binary_name": "cockpit-networkmanager",
            "binary_version": "360-1"
        },
        {
            "binary_name": "cockpit-packagekit",
            "binary_version": "360-1"
        },
        {
            "binary_name": "cockpit-sosreport",
            "binary_version": "360-1"
        },
        {
            "binary_name": "cockpit-storaged",
            "binary_version": "360-1"
        },
        {
            "binary_name": "cockpit-system",
            "binary_version": "360-1"
        },
        {
            "binary_name": "cockpit-ws",
            "binary_version": "360-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-91151.json"
Ubuntu:26.10
cockpit

Package

Name
cockpit
Purl
pkg:deb/ubuntu/cockpit?arch=source&distro=stonking

Affected ranges

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

Affected versions

Other
360-1
362-1
365-1
367-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "cockpit",
            "binary_version": "367-1"
        },
        {
            "binary_name": "cockpit-bridge",
            "binary_version": "367-1"
        },
        {
            "binary_name": "cockpit-networkmanager",
            "binary_version": "367-1"
        },
        {
            "binary_name": "cockpit-packagekit",
            "binary_version": "367-1"
        },
        {
            "binary_name": "cockpit-sosreport",
            "binary_version": "367-1"
        },
        {
            "binary_name": "cockpit-storaged",
            "binary_version": "367-1"
        },
        {
            "binary_name": "cockpit-system",
            "binary_version": "367-1"
        },
        {
            "binary_name": "cockpit-ws",
            "binary_version": "367-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-91151.json"