RHSA-2026:47768
Vulnerability from csaf_redhat - Published: 2026-07-29 10:37 - Updated: 2026-08-08 18:02Summary
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:
libssh:
* libssh-0.12.2-1.hum1 (aarch64, x86_64)
* libssh-config-0.12.2-1.hum1 (noarch)
* libssh-devel-0.12.2-1.hum1 (aarch64, x86_64)
* libssh-0.12.2-1.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 libssh. During SFTP server directory listing, the longname field is constructed with unsafe concatenation into a fixed-size stack buffer. When a client causes the server to list attacker-controlled filenames, sufficiently long names can overflow that stack buffer and may lead to crashes or possible code execution on the server.
6.7 (Medium)
Affected products
Fixed
4 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: Red Hat Hardened Images:libssh-main@aarch64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:libssh-main@noarch | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:libssh-main@src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:libssh-main@x86_64 | — |
Vendor Fix
fix
Workaround
|
Threats
Impact
Moderate
References
9 references
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"text": "This update includes the following RPMs:\n\nlibssh:\n * libssh-0.12.2-1.hum1 (aarch64, x86_64)\n * libssh-config-0.12.2-1.hum1 (noarch)\n * libssh-devel-0.12.2-1.hum1 (aarch64, x86_64)\n * libssh-0.12.2-1.hum1.src (src)",
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"url": "https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_47768.json"
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"title": "Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update",
"tracking": {
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"status": "final",
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"product_reference": "libssh-main@aarch64",
"relates_to_product_reference": "Red Hat Hardened Images"
},
{
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"product_id": "Red Hat Hardened Images:libssh-main@noarch"
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"vulnerabilities": [
{
"acknowledgments": [
{
"names": [
"Tristan"
]
}
],
"cve": "CVE-2026-15370",
"cwe": {
"id": "CWE-121",
"name": "Stack-based Buffer Overflow"
},
"discovery_date": "2026-04-29T10:03:47.442000+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2499049"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in libssh. During SFTP server directory listing, the longname field is constructed with unsafe concatenation into a fixed-size stack buffer. When a client causes the server to list attacker-controlled filenames, sufficiently long names can overflow that stack buffer and may lead to crashes or possible code execution on the server.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "libssh: libssh: stack buffer overflow in SFTP server longname construction",
"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"
}
],
"product_status": {
"fixed": [
"Red Hat Hardened Images:libssh-main@aarch64",
"Red Hat Hardened Images:libssh-main@noarch",
"Red Hat Hardened Images:libssh-main@src",
"Red Hat Hardened Images:libssh-main@x86_64"
]
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"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2499049"
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{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-15370",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-15370"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-15370",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-15370"
}
],
"release_date": "2026-07-21T09:02:49.175000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-07-29T10:37:29+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\nhttps://images.redhat.com/",
"product_ids": [
"Red Hat Hardened Images:libssh-main@aarch64",
"Red Hat Hardened Images:libssh-main@noarch",
"Red Hat Hardened Images:libssh-main@src",
"Red Hat Hardened Images:libssh-main@x86_64"
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"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:47768"
},
{
"category": "workaround",
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"product_ids": [
"Red Hat Hardened Images:libssh-main@aarch64",
"Red Hat Hardened Images:libssh-main@noarch",
"Red Hat Hardened Images:libssh-main@src",
"Red Hat Hardened Images:libssh-main@x86_64"
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}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 6.7,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"products": [
"Red Hat Hardened Images:libssh-main@aarch64",
"Red Hat Hardened Images:libssh-main@noarch",
"Red Hat Hardened Images:libssh-main@src",
"Red Hat Hardened Images:libssh-main@x86_64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "libssh: libssh: stack buffer overflow in SFTP server longname construction"
}
]
}
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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.
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.
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.
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