RHSA-2026:51183
Vulnerability from csaf_redhat - Published: 2026-08-06 18:27 - Updated: 2026-08-12 21:10Summary
Red Hat Security Advisory: glib2 security update
Severity
Important
Notes
Topic: An update for glib2 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: GLib provides the core application building blocks for libraries and applications written in C. It provides the core object system used in GNOME, the main loop implementation, and a large set of utility functions for strings and common data structures.
Security Fix(es):
* glib: integer underflow in gio/gdbusintrospection.c via "g_dbus_node_info_new_for_xml" (CVE-2026-58016)
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 GLib. A state confusion issue exists in g_dbus_node_info_new_for_xml() in the gio/gdbusintrospection.c file when processing malformed D-Bus introspection XML, specifically with a `node` element nested within other elements like `method`, `signal`, `property` or `arg`. This issue can cause an unsigned integer overflow and lead to an out-of-bounds read, resulting in a denial of service.
7.5 (High)
Affected products
Fixed
45 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 7Server-ELS:glib2-0:2.56.1-13.el7_9.i686 | — |
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| Unresolved product id: 7Server-ELS:glib2-0:2.56.1-13.el7_9.ppc | — |
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| Unresolved product id: 7Server-ELS:glib2-0:2.56.1-13.el7_9.ppc64 | — |
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| Unresolved product id: 7Server-ELS:glib2-0:2.56.1-13.el7_9.ppc64le | — |
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| Unresolved product id: 7Server-ELS:glib2-0:2.56.1-13.el7_9.s390 | — |
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| Unresolved product id: 7Server-ELS:glib2-0:2.56.1-13.el7_9.s390x | — |
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| Unresolved product id: 7Server-ELS:glib2-0:2.56.1-13.el7_9.src | — |
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| Unresolved product id: 7Server-ELS:glib2-0:2.56.1-13.el7_9.x86_64 | — |
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| Unresolved product id: 7Server-ELS:glib2-debuginfo-0:2.56.1-13.el7_9.i686 | — |
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| Unresolved product id: 7Server-ELS:glib2-debuginfo-0:2.56.1-13.el7_9.ppc | — |
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| Unresolved product id: 7Server-ELS:glib2-debuginfo-0:2.56.1-13.el7_9.ppc64 | — |
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| Unresolved product id: 7Server-ELS:glib2-debuginfo-0:2.56.1-13.el7_9.ppc64le | — |
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| Unresolved product id: 7Server-ELS:glib2-debuginfo-0:2.56.1-13.el7_9.s390 | — |
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| Unresolved product id: 7Server-ELS:glib2-debuginfo-0:2.56.1-13.el7_9.s390x | — |
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| Unresolved product id: 7Server-ELS:glib2-debuginfo-0:2.56.1-13.el7_9.x86_64 | — |
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| Unresolved product id: 7Server-ELS:glib2-devel-0:2.56.1-13.el7_9.i686 | — |
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| Unresolved product id: 7Server-ELS:glib2-devel-0:2.56.1-13.el7_9.ppc | — |
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| Unresolved product id: 7Server-ELS:glib2-devel-0:2.56.1-13.el7_9.ppc64 | — |
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| Unresolved product id: 7Server-ELS:glib2-devel-0:2.56.1-13.el7_9.ppc64le | — |
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| Unresolved product id: 7Server-ELS:glib2-devel-0:2.56.1-13.el7_9.s390 | — |
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| Unresolved product id: 7Server-ELS:glib2-devel-0:2.56.1-13.el7_9.s390x | — |
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| Unresolved product id: 7Server-ELS:glib2-devel-0:2.56.1-13.el7_9.x86_64 | — |
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| Unresolved product id: 7Server-optional-ELS:glib2-debuginfo-0:2.56.1-13.el7_9.i686 | — |
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| Unresolved product id: 7Server-optional-ELS:glib2-debuginfo-0:2.56.1-13.el7_9.ppc | — |
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| Unresolved product id: 7Server-optional-ELS:glib2-debuginfo-0:2.56.1-13.el7_9.ppc64 | — |
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| Unresolved product id: 7Server-optional-ELS:glib2-debuginfo-0:2.56.1-13.el7_9.ppc64le | — |
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| Unresolved product id: 7Server-optional-ELS:glib2-debuginfo-0:2.56.1-13.el7_9.s390 | — |
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| Unresolved product id: 7Server-optional-ELS:glib2-debuginfo-0:2.56.1-13.el7_9.s390x | — |
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| Unresolved product id: 7Server-optional-ELS:glib2-debuginfo-0:2.56.1-13.el7_9.x86_64 | — |
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| Unresolved product id: 7Server-optional-ELS:glib2-doc-0:2.56.1-13.el7_9.noarch | — |
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| Unresolved product id: 7Server-optional-ELS:glib2-fam-0:2.56.1-13.el7_9.ppc64 | — |
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| Unresolved product id: 7Server-optional-ELS:glib2-fam-0:2.56.1-13.el7_9.ppc64le | — |
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| Unresolved product id: 7Server-optional-ELS:glib2-fam-0:2.56.1-13.el7_9.s390x | — |
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| Unresolved product id: 7Server-optional-ELS:glib2-fam-0:2.56.1-13.el7_9.x86_64 | — |
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| Unresolved product id: 7Server-optional-ELS:glib2-static-0:2.56.1-13.el7_9.i686 | — |
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| Unresolved product id: 7Server-optional-ELS:glib2-static-0:2.56.1-13.el7_9.ppc | — |
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| Unresolved product id: 7Server-optional-ELS:glib2-static-0:2.56.1-13.el7_9.ppc64 | — |
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| Unresolved product id: 7Server-optional-ELS:glib2-static-0:2.56.1-13.el7_9.ppc64le | — |
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| Unresolved product id: 7Server-optional-ELS:glib2-static-0:2.56.1-13.el7_9.s390 | — |
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| Unresolved product id: 7Server-optional-ELS:glib2-static-0:2.56.1-13.el7_9.s390x | — |
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| Unresolved product id: 7Server-optional-ELS:glib2-static-0:2.56.1-13.el7_9.x86_64 | — |
Vendor Fix
fix
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|
|
| Unresolved product id: 7Server-optional-ELS:glib2-tests-0:2.56.1-13.el7_9.ppc64 | — |
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fix
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|
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| Unresolved product id: 7Server-optional-ELS:glib2-tests-0:2.56.1-13.el7_9.ppc64le | — |
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|
|
| Unresolved product id: 7Server-optional-ELS:glib2-tests-0:2.56.1-13.el7_9.s390x | — |
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|
|
| Unresolved product id: 7Server-optional-ELS:glib2-tests-0:2.56.1-13.el7_9.x86_64 | — |
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Threats
Impact
Important
References
9 references
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"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.",
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"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
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],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "glib: integer underflow in gio/gdbusintrospection.c via \"g_dbus_node_info_new_for_xml\""
}
]
}
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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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