RHSA-2025:2673
Vulnerability from csaf_opensuse - Published: 2025-03-12 00:20 - Updated: 2026-10-13 21:17Summary
Red Hat Security Advisory: libxml2 security update
Severity
Important
Notes
Topic: An update for libxml2 is now available for Red Hat Enterprise Linux 7 Extended Lifecycle Support.
Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Details: The libxml2 library is a development toolbox providing the implementation of various XML standards.
Security Fix(es):
* libxml2: Use-After-Free in libxml2 (CVE-2024-56171)
* libxml2: Stack-based buffer overflow in xmlSnprintfElements of libxml2 (CVE-2025-24928)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
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 libxml2. This vulnerability allows a use-after-free via a crafted XML document validated against an XML schema with certain identity constraints or a crafted XML schema.
8.1 (High)
Affected products
Fixed
40 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 7Server-ELS:libxml2-0:2.9.1-6.el7_9.9.i686 | — |
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fix
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| Unresolved product id: 7Server-ELS:libxml2-0:2.9.1-6.el7_9.9.ppc | — |
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| Unresolved product id: 7Server-ELS:libxml2-0:2.9.1-6.el7_9.9.ppc64 | — |
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fix
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| Unresolved product id: 7Server-ELS:libxml2-0:2.9.1-6.el7_9.9.ppc64le | — |
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fix
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| Unresolved product id: 7Server-ELS:libxml2-0:2.9.1-6.el7_9.9.s390 | — |
Vendor Fix
fix
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|
| Unresolved product id: 7Server-ELS:libxml2-0:2.9.1-6.el7_9.9.s390x | — |
Vendor Fix
fix
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| Unresolved product id: 7Server-ELS:libxml2-0:2.9.1-6.el7_9.9.src | — |
Vendor Fix
fix
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|
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| Unresolved product id: 7Server-ELS:libxml2-0:2.9.1-6.el7_9.9.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-ELS:libxml2-debuginfo-0:2.9.1-6.el7_9.9.i686 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-ELS:libxml2-debuginfo-0:2.9.1-6.el7_9.9.ppc | — |
Vendor Fix
fix
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|
|
| Unresolved product id: 7Server-ELS:libxml2-debuginfo-0:2.9.1-6.el7_9.9.ppc64 | — |
Vendor Fix
fix
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|
| Unresolved product id: 7Server-ELS:libxml2-debuginfo-0:2.9.1-6.el7_9.9.ppc64le | — |
Vendor Fix
fix
Workaround
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|
| Unresolved product id: 7Server-ELS:libxml2-debuginfo-0:2.9.1-6.el7_9.9.s390 | — |
Vendor Fix
fix
Workaround
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|
| Unresolved product id: 7Server-ELS:libxml2-debuginfo-0:2.9.1-6.el7_9.9.s390x | — |
Vendor Fix
fix
Workaround
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|
| Unresolved product id: 7Server-ELS:libxml2-debuginfo-0:2.9.1-6.el7_9.9.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-ELS:libxml2-devel-0:2.9.1-6.el7_9.9.i686 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-ELS:libxml2-devel-0:2.9.1-6.el7_9.9.ppc | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-ELS:libxml2-devel-0:2.9.1-6.el7_9.9.ppc64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-ELS:libxml2-devel-0:2.9.1-6.el7_9.9.ppc64le | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-ELS:libxml2-devel-0:2.9.1-6.el7_9.9.s390 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-ELS:libxml2-devel-0:2.9.1-6.el7_9.9.s390x | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-ELS:libxml2-devel-0:2.9.1-6.el7_9.9.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-ELS:libxml2-python-0:2.9.1-6.el7_9.9.ppc64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-ELS:libxml2-python-0:2.9.1-6.el7_9.9.ppc64le | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-ELS:libxml2-python-0:2.9.1-6.el7_9.9.s390x | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-ELS:libxml2-python-0:2.9.1-6.el7_9.9.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-optional-ELS:libxml2-debuginfo-0:2.9.1-6.el7_9.9.i686 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-optional-ELS:libxml2-debuginfo-0:2.9.1-6.el7_9.9.ppc | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-optional-ELS:libxml2-debuginfo-0:2.9.1-6.el7_9.9.ppc64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-optional-ELS:libxml2-debuginfo-0:2.9.1-6.el7_9.9.ppc64le | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-optional-ELS:libxml2-debuginfo-0:2.9.1-6.el7_9.9.s390 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-optional-ELS:libxml2-debuginfo-0:2.9.1-6.el7_9.9.s390x | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-optional-ELS:libxml2-debuginfo-0:2.9.1-6.el7_9.9.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-optional-ELS:libxml2-static-0:2.9.1-6.el7_9.9.i686 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-optional-ELS:libxml2-static-0:2.9.1-6.el7_9.9.ppc | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-optional-ELS:libxml2-static-0:2.9.1-6.el7_9.9.ppc64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-optional-ELS:libxml2-static-0:2.9.1-6.el7_9.9.ppc64le | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-optional-ELS:libxml2-static-0:2.9.1-6.el7_9.9.s390 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-optional-ELS:libxml2-static-0:2.9.1-6.el7_9.9.s390x | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-optional-ELS:libxml2-static-0:2.9.1-6.el7_9.9.x86_64 | — |
Vendor Fix
fix
Workaround
|
Threats
Impact
Important
A flaw was found in libxml2. This vulnerability allows a stack-based buffer overflow via DTD validation of an untrusted document or untrusted DTD.
7.8 (High)
Affected products
Fixed
40 products, the same list as for
CVE-2024-56171
Threats
Impact
Important
References
16 references
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"details": "Important"
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"title": "libxml2: Use-After-Free in libxml2"
},
{
"cve": "CVE-2025-24928",
"cwe": {
"id": "CWE-121",
"name": "Stack-based Buffer Overflow"
},
"discovery_date": "2025-02-18T23:01:36.502916+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2346421"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in libxml2. This vulnerability allows a stack-based buffer overflow via DTD validation of an untrusted document or untrusted DTD.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "libxml2: Stack-based buffer overflow in xmlSnprintfElements of libxml2",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This vulnerability is rated as important because it involves a stack-based buffer overflow in the xmlSnprintfElements function within valid.c. Exploiting this issue requires DTD validation to occur on an untrusted document or untrusted DTD, making it a potential security risk for applications using libxml2 that do not adequately restrict DTD input.",
"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"
}
],
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"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2025-24928"
},
{
"category": "external",
"summary": "RHBZ#2346421",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2346421"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2025-24928",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-24928"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2025-24928",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-24928"
},
{
"category": "external",
"summary": "https://gitlab.gnome.org/GNOME/libxml2/-/issues/847",
"url": "https://gitlab.gnome.org/GNOME/libxml2/-/issues/847"
},
{
"category": "external",
"summary": "https://issues.oss-fuzz.com/issues/392687022",
"url": "https://issues.oss-fuzz.com/issues/392687022"
}
],
"release_date": "2025-02-18T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2025-03-12T00:20:59+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
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},
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{
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"attackVector": "LOCAL",
"availabilityImpact": "NONE",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N",
"version": "3.1"
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],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "libxml2: Stack-based buffer overflow in xmlSnprintfElements of libxml2"
}
]
}
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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.
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.
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