RHSA-2026:82247
Vulnerability from csaf_redhat - Published: 2026-10-13 13:19 - Updated: 2026-10-15 23:34Summary
Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update
Severity
Moderate
Notes
Topic: An update for Red Hat Hardened Images RPMs is now available.
Details: This update includes the following RPMs:
openssh:
* openssh-10.5p1-1.2.hum1 (aarch64, s390x, x86_64)
* openssh-askpass-10.5p1-1.2.hum1 (aarch64, s390x, x86_64)
* openssh-clients-10.5p1-1.2.hum1 (aarch64, s390x, x86_64)
* openssh-keycat-10.5p1-1.2.hum1 (aarch64, s390x, x86_64)
* openssh-keysign-10.5p1-1.2.hum1 (aarch64, s390x, x86_64)
* openssh-server-10.5p1-1.2.hum1 (aarch64, s390x, x86_64)
* openssh-sk-dummy-10.5p1-1.2.hum1 (aarch64, s390x, x86_64)
* openssh-10.5p1-1.2.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 OpenSSH. In configurations where tunnel forwarding is enabled on the server, the restrict option in the authorized keys configuration fails to properly block tunnel forwarding requests. An authenticated user connecting with a restricted key can exploit this issue to bypass intended access limitations and establish unauthorized network tunnels through the server.
CWE-267 - Privilege Defined With Unsafe ActionsAffected products
Fixed
22 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: Red Hat Hardened Images:openssh-0:10.5p1-1.2.hum1@aarch64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:openssh-0:10.5p1-1.2.hum1@s390x | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:openssh-0:10.5p1-1.2.hum1@src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:openssh-0:10.5p1-1.2.hum1@x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:openssh-askpass-0:10.5p1-1.2.hum1@aarch64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:openssh-askpass-0:10.5p1-1.2.hum1@s390x | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:openssh-askpass-0:10.5p1-1.2.hum1@x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:openssh-clients-0:10.5p1-1.2.hum1@aarch64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:openssh-clients-0:10.5p1-1.2.hum1@s390x | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:openssh-clients-0:10.5p1-1.2.hum1@x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:openssh-keycat-0:10.5p1-1.2.hum1@aarch64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:openssh-keycat-0:10.5p1-1.2.hum1@s390x | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:openssh-keycat-0:10.5p1-1.2.hum1@x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:openssh-keysign-0:10.5p1-1.2.hum1@aarch64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:openssh-keysign-0:10.5p1-1.2.hum1@s390x | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:openssh-keysign-0:10.5p1-1.2.hum1@x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:openssh-server-0:10.5p1-1.2.hum1@aarch64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:openssh-server-0:10.5p1-1.2.hum1@s390x | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:openssh-server-0:10.5p1-1.2.hum1@x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:openssh-sk-dummy-0:10.5p1-1.2.hum1@aarch64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:openssh-sk-dummy-0:10.5p1-1.2.hum1@s390x | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:openssh-sk-dummy-0:10.5p1-1.2.hum1@x86_64 | — |
Vendor Fix
fix
Workaround
|
Threats
Impact
Low
A flaw was found in OpenSSH. During an sftp copy, a malicious server can supply an empty name, a slash-only path, or a ".." basename that sftp uses as the local destination, writing outside the directory the user selected.
6.5 (Medium)
Affected products
Fixed
22 products, the same list as for
CVE-2026-106586
Threats
Impact
Moderate
A flaw was found in OpenSSH. A username entered on the ssh command line can still contain '$' or a non-trailing backslash. When a configuration expands %u inside ProxyCommand or Match exec, those characters are passed into the shell.
5.4 (Medium)
Affected products
Fixed
22 products, the same list as for
CVE-2026-106586
Threats
Impact
Moderate
A flaw was found in OpenSSH. When compression is negotiated, channels on the same connection share one LZ77 dictionary. A peer who can write on one channel can recover plaintext from another channel by chosen-plaintext lengths.
5.3 (Medium)
Affected products
Fixed
22 products, the same list as for
CVE-2026-106586
Threats
Impact
Moderate
A flaw was found in OpenSSH. After compression is negotiated, a compressed payload can expand past the maximum supported packet size because the inflate loop does not stop at that limit. Memory use grows in the process handling that connection.
4.3 (Medium)
Affected products
Fixed
22 products, the same list as for
CVE-2026-106586
Threats
Impact
Moderate
References
36 references
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"Red Hat Hardened Images:openssh-askpass-0:10.5p1-1.2.hum1@x86_64",
"Red Hat Hardened Images:openssh-clients-0:10.5p1-1.2.hum1@aarch64",
"Red Hat Hardened Images:openssh-clients-0:10.5p1-1.2.hum1@s390x",
"Red Hat Hardened Images:openssh-clients-0:10.5p1-1.2.hum1@x86_64",
"Red Hat Hardened Images:openssh-keycat-0:10.5p1-1.2.hum1@aarch64",
"Red Hat Hardened Images:openssh-keycat-0:10.5p1-1.2.hum1@s390x",
"Red Hat Hardened Images:openssh-keycat-0:10.5p1-1.2.hum1@x86_64",
"Red Hat Hardened Images:openssh-keysign-0:10.5p1-1.2.hum1@aarch64",
"Red Hat Hardened Images:openssh-keysign-0:10.5p1-1.2.hum1@s390x",
"Red Hat Hardened Images:openssh-keysign-0:10.5p1-1.2.hum1@x86_64",
"Red Hat Hardened Images:openssh-server-0:10.5p1-1.2.hum1@aarch64",
"Red Hat Hardened Images:openssh-server-0:10.5p1-1.2.hum1@s390x",
"Red Hat Hardened Images:openssh-server-0:10.5p1-1.2.hum1@x86_64",
"Red Hat Hardened Images:openssh-sk-dummy-0:10.5p1-1.2.hum1@aarch64",
"Red Hat Hardened Images:openssh-sk-dummy-0:10.5p1-1.2.hum1@s390x",
"Red Hat Hardened Images:openssh-sk-dummy-0:10.5p1-1.2.hum1@x86_64"
]
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 4.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
"version": "3.1"
},
"products": [
"Red Hat Hardened Images:openssh-0:10.5p1-1.2.hum1@aarch64",
"Red Hat Hardened Images:openssh-0:10.5p1-1.2.hum1@s390x",
"Red Hat Hardened Images:openssh-0:10.5p1-1.2.hum1@src",
"Red Hat Hardened Images:openssh-0:10.5p1-1.2.hum1@x86_64",
"Red Hat Hardened Images:openssh-askpass-0:10.5p1-1.2.hum1@aarch64",
"Red Hat Hardened Images:openssh-askpass-0:10.5p1-1.2.hum1@s390x",
"Red Hat Hardened Images:openssh-askpass-0:10.5p1-1.2.hum1@x86_64",
"Red Hat Hardened Images:openssh-clients-0:10.5p1-1.2.hum1@aarch64",
"Red Hat Hardened Images:openssh-clients-0:10.5p1-1.2.hum1@s390x",
"Red Hat Hardened Images:openssh-clients-0:10.5p1-1.2.hum1@x86_64",
"Red Hat Hardened Images:openssh-keycat-0:10.5p1-1.2.hum1@aarch64",
"Red Hat Hardened Images:openssh-keycat-0:10.5p1-1.2.hum1@s390x",
"Red Hat Hardened Images:openssh-keycat-0:10.5p1-1.2.hum1@x86_64",
"Red Hat Hardened Images:openssh-keysign-0:10.5p1-1.2.hum1@aarch64",
"Red Hat Hardened Images:openssh-keysign-0:10.5p1-1.2.hum1@s390x",
"Red Hat Hardened Images:openssh-keysign-0:10.5p1-1.2.hum1@x86_64",
"Red Hat Hardened Images:openssh-server-0:10.5p1-1.2.hum1@aarch64",
"Red Hat Hardened Images:openssh-server-0:10.5p1-1.2.hum1@s390x",
"Red Hat Hardened Images:openssh-server-0:10.5p1-1.2.hum1@x86_64",
"Red Hat Hardened Images:openssh-sk-dummy-0:10.5p1-1.2.hum1@aarch64",
"Red Hat Hardened Images:openssh-sk-dummy-0:10.5p1-1.2.hum1@s390x",
"Red Hat Hardened Images:openssh-sk-dummy-0:10.5p1-1.2.hum1@x86_64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "openssh: openssh: a compressed payload can expand past the maximum packet size"
}
]
}
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Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
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.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
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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.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.