RHSA-2026:29954
Vulnerability from csaf_redhat - Published: 2026-06-25 13:22 - Updated: 2026-07-19 22:21Summary
Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update
Severity
Important
Notes
Topic: An update for Red Hat Hardened Images RPMs is now available.
Details: This update includes the following RPMs:
podman:
* podman-6.0.0-1.hum1 (aarch64, x86_64)
* podman-docker-6.0.0-1.hum1 (noarch)
* podman-machine-6.0.0-1.hum1 (aarch64, x86_64)
* podman-remote-6.0.0-1.hum1 (aarch64, x86_64)
* podman-tests-6.0.0-1.hum1 (aarch64, x86_64)
* podmansh-6.0.0-1.hum1 (aarch64, x86_64)
* podman-6.0.0-1.hum1.src (src)
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
A flaw was found in Podman. A remote attacker can exploit this vulnerability by running a malicious container image where the WORKDIR (working directory) path contains a symbolic link (symlink). This can lead to the creation of a directory or modification of ownership on the host filesystem, potentially impacting system integrity.
5.8 (Medium)
Affected products
Fixed
4 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: Red Hat Hardened Images:podman-main@aarch64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:podman-main@noarch | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:podman-main@src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:podman-main@x86_64 | — |
Vendor Fix
fix
Workaround
|
Threats
Impact
Moderate
A flaw was found in Podman, a tool for managing OCI containers and pods. A malicious container image can be crafted with an environment variable that has a key but no value, or an asterisk (*), to trick Podman. This vulnerability causes Podman to pass host environment variables into the container. Consequently, a malicious image could exfiltrate all Podman environment variables set in the session from which the container is launched, leading to information disclosure.
7.5 (High)
Affected products
Fixed
4 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: Red Hat Hardened Images:podman-main@aarch64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:podman-main@noarch | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:podman-main@src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:podman-main@x86_64 | — |
Vendor Fix
fix
Workaround
|
Threats
Impact
Important
References
18 references
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"title": "Vulnerability description"
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"text": "A flaw was found in Podman where running a malicious container image with a WORKDIR path containing a symlink can create directories or modify ownership on the host filesystem. Exploitation requires the user to pull and run a specifically crafted malicious container image. Red Hat rates this as Moderate impact, consistent with the upstream assessment, because the attack requires a malicious image and the most severe outcome (ownership modification) requires additional help from an underprivileged user namespace.",
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"privilegesRequired": "NONE",
"scope": "CHANGED",
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"title": "github.com/containers/podman: Podman: Host filesystem modification via malicious container image WORKDIR symlink"
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"ids": [
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"notes": [
{
"category": "description",
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"title": "Vulnerability description"
},
{
"category": "summary",
"text": "podman: Podman: Information disclosure via malicious container image environment variables",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
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"product_ids": [
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"Red Hat Hardened Images:podman-main@noarch",
"Red Hat Hardened Images:podman-main@src",
"Red Hat Hardened Images:podman-main@x86_64"
],
"restart_required": {
"category": "none"
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"url": "https://access.redhat.com/errata/RHSA-2026:29954"
},
{
"category": "workaround",
"details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.",
"product_ids": [
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"Red Hat Hardened Images:podman-main@noarch",
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"Red Hat Hardened Images:podman-main@x86_64"
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],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"version": "3.1"
},
"products": [
"Red Hat Hardened Images:podman-main@aarch64",
"Red Hat Hardened Images:podman-main@noarch",
"Red Hat Hardened Images:podman-main@src",
"Red Hat Hardened Images:podman-main@x86_64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "podman: Podman: Information disclosure via malicious container image environment variables"
}
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
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