RHSA-2026:61630
Vulnerability from csaf_redhat - Published: 2026-08-31 13:47 - Updated: 2026-09-08 22:45Summary
Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update
Severity
Moderate
Notes
Topic: An update for Red Hat Hardened Images RPMs is now available.
Details: This update includes the following RPMs:
hdf5:
* hdf5-2.2.0-0.1.1.hum1 (aarch64, x86_64)
* hdf5-devel-2.2.0-0.1.1.hum1 (aarch64, x86_64)
* hdf5-mpich-2.2.0-0.1.1.hum1 (aarch64, x86_64)
* hdf5-mpich-devel-2.2.0-0.1.1.hum1 (aarch64, x86_64)
* hdf5-mpich-static-2.2.0-0.1.1.hum1 (aarch64, x86_64)
* hdf5-openmpi-2.2.0-0.1.1.hum1 (aarch64, x86_64)
* hdf5-openmpi-devel-2.2.0-0.1.1.hum1 (aarch64, x86_64)
* hdf5-openmpi-static-2.2.0-0.1.1.hum1 (aarch64, x86_64)
* hdf5-static-2.2.0-0.1.1.hum1 (aarch64, x86_64)
* java-hdf5-2.2.0-0.1.1.hum1 (aarch64, x86_64)
* hdf5-2.2.0-0.1.1.hum1.src (src)
Security Fix(es):
hdf5:
* CVE-2026-19025
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 HDF5, a data management library. This vulnerability, a heap-based buffer overflow, allows a local attacker to cause a denial of service (DoS) by persuading a user to open a specially crafted HDF5 file. The malformed file can trigger out-of-bounds memory operations, leading to application crashes or instability.
5.5 (Medium)
Affected products
Threats
Impact
Moderate
A flaw was found in the HDF5 library. A local user could exploit a double free vulnerability by processing a specially crafted HDF5 file with an oversized chunk size field using the h5repack tool. This could cause the application to unexpectedly terminate, leading to a denial of service.
5.0 (Medium)
Affected products
Threats
Impact
Moderate
A flaw was found in HDF5. An attacker can craft a malicious HDF5 file that, when opened and read by an application, exploits a validation bypass. This bypass, related to mismatched chunk-layout dimensionality and dataspace rank, leads to a divide-by-zero error, causing a denial of service (DoS) and application crash.
5.0 (Medium)
Affected products
Fixed
3 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: Red Hat Hardened Images:hdf5-main@aarch64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:hdf5-main@src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:hdf5-main@x86_64 | — |
Vendor Fix
fix
Workaround
|
Threats
Impact
Moderate
A flaw was found in HDF5, a high-performance library and file format specification. A remote attacker can exploit this vulnerability by providing a maliciously altered HDF5 file. If the file's array datatype has inconsistent size, element count, or element size, it can trigger an out-of-bounds read. This can lead to a denial of service (DoS) by causing the application to crash or become unresponsive.
5.3 (Medium)
Affected products
Threats
Impact
Moderate
References
28 references
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"title": "Vulnerability description"
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"text": "This Moderate impact vulnerability in HDF5 requires user interaction to process a specially crafted HDF5 file, limiting the attack vector to local scenarios. Successful exploitation can lead to a denial of service. The HDF5 library is used in Red Hat Enterprise Linux AI, Red Hat AI Inference Server, and Red Hat OpenShift AI.",
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"title": "hdf5: HDF5: Denial of Service via crafted file requiring user interaction"
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"title": "Vulnerability description"
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"text": "hdf5: HDF5 library: Denial of Service via crafted HDF5 file processing",
"title": "Vulnerability summary"
},
{
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"title": "Statement"
},
{
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"title": "CVSS score applicability"
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],
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"title": "hdf5: HDF5 library: Denial of Service via crafted HDF5 file processing"
},
{
"cve": "CVE-2026-19025",
"cwe": {
"id": "CWE-369",
"name": "Divide By Zero"
},
"discovery_date": "2026-08-05T23:00:51.636980+00:00",
"ids": [
{
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],
"notes": [
{
"category": "description",
"text": "A flaw was found in HDF5. An attacker can craft a malicious HDF5 file that, when opened and read by an application, exploits a validation bypass. This bypass, related to mismatched chunk-layout dimensionality and dataspace rank, leads to a divide-by-zero error, causing a denial of service (DoS) and application crash.",
"title": "Vulnerability description"
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"text": "hdf5: HDF5: Denial of Service due to malformed chunk data in files",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "A flaw was found in HDF5\u0027s H5O__layout_decode() function. When opening an existing dataset, HDF5 fails to validate that a chunked dataset\u0027s stored chunk-layout dimensionality matches its dataspace rank. An attacker can craft a malicious HDF5 file with mismatched dimensionality and trick a user or application into opening and reading it via functions like H5Dopen2() or utilities like h5repack. Processing this file triggers a divide-by-zero arithmetic exception in H5S__hyper_iter_get_seq_list(), resulting in an immediate application crash and denial of service.",
"title": "Statement"
},
{
"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": [
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"Red Hat Hardened Images:hdf5-main@src",
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"references": [
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"url": "https://access.redhat.com/security/cve/CVE-2026-19025"
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"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2511850"
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"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-19025"
},
{
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"summary": "https://github.com/HDFGroup/hdf5/issues/6491",
"url": "https://github.com/HDFGroup/hdf5/issues/6491"
}
],
"release_date": "2026-08-05T22:35:11.510000+00:00",
"remediations": [
{
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"date": "2026-08-31T13:47:28+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:hdf5-main@aarch64",
"Red Hat Hardened Images:hdf5-main@src",
"Red Hat Hardened Images:hdf5-main@x86_64"
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},
{
"category": "workaround",
"details": "Do not open or process untrusted HDF5 files using applications or utilities (such as h5repack) linked against vulnerable versions of the HDF5 library. Ensure files originate from trusted sources or isolate untrusted file parsing within a sandboxed environment.",
"product_ids": [
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]
}
],
"scores": [
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"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 5.0,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"products": [
"Red Hat Hardened Images:hdf5-main@aarch64",
"Red Hat Hardened Images:hdf5-main@src",
"Red Hat Hardened Images:hdf5-main@x86_64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "hdf5: HDF5: Denial of Service due to malformed chunk data in files"
},
{
"cve": "CVE-2026-26197",
"cwe": {
"id": "CWE-125",
"name": "Out-of-bounds Read"
},
"discovery_date": "2026-07-20T16:01:09.936294+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2502846"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in HDF5, a high-performance library and file format specification. A remote attacker can exploit this vulnerability by providing a maliciously altered HDF5 file. If the file\u0027s array datatype has inconsistent size, element count, or element size, it can trigger an out-of-bounds read. This can lead to a denial of service (DoS) by causing the application to crash or become unresponsive.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "hdf5: HDF5: Out-of-bounds read due to corrupted file can lead to denial of service",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This Moderate flaw in HDF5 is due to an out-of-bounds read when processing a maliciously crafted HDF5 file with inconsistent array datatype metadata. Exploitation requires an attacker to provide a specially altered file, which can lead to a denial of service by crashing the application. Regular usage of HDF5 is not affected.",
"title": "Statement"
},
{
"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:hdf5-main@aarch64",
"Red Hat Hardened Images:hdf5-main@src",
"Red Hat Hardened Images:hdf5-main@x86_64"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-26197"
},
{
"category": "external",
"summary": "RHBZ#2502846",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2502846"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-26197",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-26197"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-26197",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-26197"
},
{
"category": "external",
"summary": "https://github.com/HDFGroup/hdf5/security/advisories/GHSA-gh44-7wpq-622f",
"url": "https://github.com/HDFGroup/hdf5/security/advisories/GHSA-gh44-7wpq-622f"
}
],
"release_date": "2026-07-20T14:55:50.636000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-08-31T13:47:28+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:hdf5-main@aarch64",
"Red Hat Hardened Images:hdf5-main@src",
"Red Hat Hardened Images:hdf5-main@x86_64"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:61630"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 5.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"products": [
"Red Hat Hardened Images:hdf5-main@aarch64",
"Red Hat Hardened Images:hdf5-main@src",
"Red Hat Hardened Images:hdf5-main@x86_64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "hdf5: HDF5: Out-of-bounds read due to corrupted file can lead to denial of service"
}
]
}
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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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