UBUNTU-CVE-2026-121885

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Source
https://ubuntu.com/security/CVE-2026-121885
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-121885.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-121885
Upstream
Published
2026-11-12T00:00:00Z
Modified
2026-11-12T23:46:12Z
Severity
  • Ubuntu - medium
Summary
[none]
Details

A flaw was found in Podman. An attacker can trigger a Denial of Service (DoS) by supplying a container image containing crafted metadata labels. Podman's auto-update mechanism improperly trusts these image labels to determine which system services to restart. If a user runs the malicious container and auto-update processes it, arbitrary system services are restarted with the user's privileges, potentially allowing an attacker to shut down the host system when Podman runs with administrative privileges.

References

Affected packages

Ubuntu:26.10 / podman

Package

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

Affected ranges

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

Affected versions

5.*
5.7.0+ds2-3build1
5.8.3+ds1-1
5.8.4+ds1-1
5.8.6+ds1-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "podman",
            "binary_version": "5.8.6+ds1-2"
        },
        {
            "binary_name": "podman-docker",
            "binary_version": "5.8.6+ds1-2"
        },
        {
            "binary_name": "podman-remote",
            "binary_version": "5.8.6+ds1-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-121885.json"

Ubuntu:26.04:LTS / podman

Package

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

Affected ranges

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

Affected versions

5.*
5.4.2+ds1-2
5.7.0+ds2-3
5.7.0+ds2-3build1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "podman",
            "binary_version": "5.7.0+ds2-3build1"
        },
        {
            "binary_name": "podman-docker",
            "binary_version": "5.7.0+ds2-3build1"
        },
        {
            "binary_name": "podman-remote",
            "binary_version": "5.7.0+ds2-3build1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-121885.json"