{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-121885", "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "state": "PUBLISHED", "assignerShortName": "redhat", "dateReserved": "2026-11-04T11:15:46.453Z", "datePublished": "2026-11-10T14:34:31.734Z", "dateUpdated": "2026-11-10T14:34:31.734Z"}, "containers": {"cna": {"title": "Podman: untrusted image labels allow auto-update to restart arbitrary systemd units", "metrics": [{"other": {"content": {"value": "Moderate", "namespace": "https://access.redhat.com/security/updates/classification/"}, "type": "Red Hat severity rating"}}, {"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H", "version": "3.1"}, "format": "CVSS"}], "descriptions": [{"lang": "en", "value": "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."}], "affected": [{"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 10", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "podman", "defaultStatus": "affected", "cpes": ["cpe:/a:redhat:enterprise_linux:10"]}, {"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "container-tools:rhel8/podman", "defaultStatus": "affected", "cpes": ["cpe:/a:redhat:enterprise_linux:8"]}, {"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "podman", "defaultStatus": "affected", "cpes": ["cpe:/a:redhat:enterprise_linux:9"]}, {"vendor": "Red Hat", "product": "Red Hat Hardened Images", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "podman", "defaultStatus": "affected", "cpes": ["cpe:/a:redhat:hummingbird:1"]}, {"vendor": "Red Hat", "product": "Red Hat OpenShift Container Platform 4", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "podman", "defaultStatus": "affected", "cpes": ["cpe:/a:redhat:openshift:4"]}], "references": [{"url": "https://access.redhat.com/security/cve/CVE-2026-121885", "tags": ["vdb-entry", "x_refsource_REDHAT"]}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2566844", "name": "RHBZ#2566844", "tags": ["issue-tracking", "x_refsource_REDHAT"]}], "datePublic": "2026-11-10T14:00:00.000Z", "problemTypes": [{"descriptions": [{"cweId": "CWE-807", "description": "Reliance on Untrusted Inputs in a Security Decision", "lang": "en", "type": "CWE"}]}], "x_redhatCweChain": "CWE-807: Reliance on Untrusted Inputs in a Security Decision", "workarounds": [{"lang": "en", "value": "Do not use podman auto-update on untrusted containers or images. Before running an image, inspect its labels with podman image inspect --format '.Config.Labels' and verify that the io.containers.autoupdate and PODMAN_SYSTEMD_UNIT labels are not set. For existing containers, inspect their labels and ensure that auto-update labels are configured correctly and only present on containers intended to use auto-update."}], "timeline": [{"lang": "en", "time": "2026-11-02T18:30:24.000Z", "value": "Reported to Red Hat."}, {"lang": "en", "time": "2026-11-10T14:00:00.000Z", "value": "Made public."}], "credits": [{"lang": "en", "value": "Upstream acknowledges Adel Assakaf as the original reporter."}], "providerMetadata": {"orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat", "dateUpdated": "2026-11-10T14:34:31.734Z"}, "x_generator": {"engine": "cvelib 1.8.0"}}}}

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