RHSA-2026:27739

Vulnerability from csaf_redhat - Published: 2026-06-22 04:21 - Updated: 2026-06-22 07:46
Summary
Red Hat Security Advisory: libxml2 security update
Severity
Low
Notes
Topic: An update for libxml2 is now available for Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions and Red Hat Enterprise Linux 8.8 Telecommunications Update Service. Red Hat Product Security has rated this update as having a security impact of Low. 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: buffer over-read in xmlHTMLPrintFileContext in xmllint.c (CVE-2024-34459) 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 the xmllint program distributed by the libxml2 package. A buffer over-read in the xmlHTMLPrintFileContext function in the xmllint.c file may be triggered when a crafted file is processed with the xmllint program using the `--htmlout` command line option, causing an application crash and resulting in a denial of service.

CWE-126 - Buffer Over-read
Affected products
Product Identifier Version Remediation
Unresolved product id: AppStream-8.8.0.Z.E4S:libxml2-0:2.9.7-16.el8_8.14.i686
Vendor Fix fix
Workaround
Unresolved product id: AppStream-8.8.0.Z.E4S:libxml2-0:2.9.7-16.el8_8.14.ppc64le
Vendor Fix fix
Workaround
Unresolved product id: AppStream-8.8.0.Z.E4S:libxml2-0:2.9.7-16.el8_8.14.src
Vendor Fix fix
Workaround
Unresolved product id: AppStream-8.8.0.Z.E4S:libxml2-0:2.9.7-16.el8_8.14.x86_64
Vendor Fix fix
Workaround
Unresolved product id: AppStream-8.8.0.Z.E4S:libxml2-debuginfo-0:2.9.7-16.el8_8.14.i686
Vendor Fix fix
Workaround
Unresolved product id: AppStream-8.8.0.Z.E4S:libxml2-debuginfo-0:2.9.7-16.el8_8.14.ppc64le
Vendor Fix fix
Workaround
Unresolved product id: AppStream-8.8.0.Z.E4S:libxml2-debuginfo-0:2.9.7-16.el8_8.14.x86_64
Vendor Fix fix
Workaround
Unresolved product id: AppStream-8.8.0.Z.E4S:libxml2-debugsource-0:2.9.7-16.el8_8.14.i686
Vendor Fix fix
Workaround
Unresolved product id: AppStream-8.8.0.Z.E4S:libxml2-debugsource-0:2.9.7-16.el8_8.14.ppc64le
Vendor Fix fix
Workaround
Unresolved product id: AppStream-8.8.0.Z.E4S:libxml2-debugsource-0:2.9.7-16.el8_8.14.x86_64
Vendor Fix fix
Workaround
Unresolved product id: AppStream-8.8.0.Z.E4S:libxml2-devel-0:2.9.7-16.el8_8.14.i686
Vendor Fix fix
Workaround
Unresolved product id: AppStream-8.8.0.Z.E4S:libxml2-devel-0:2.9.7-16.el8_8.14.ppc64le
Vendor Fix fix
Workaround
Unresolved product id: AppStream-8.8.0.Z.E4S:libxml2-devel-0:2.9.7-16.el8_8.14.x86_64
Vendor Fix fix
Workaround
Unresolved product id: AppStream-8.8.0.Z.E4S:python3-libxml2-0:2.9.7-16.el8_8.14.ppc64le
Vendor Fix fix
Workaround
Unresolved product id: AppStream-8.8.0.Z.E4S:python3-libxml2-0:2.9.7-16.el8_8.14.x86_64
Vendor Fix fix
Workaround
Unresolved product id: AppStream-8.8.0.Z.E4S:python3-libxml2-debuginfo-0:2.9.7-16.el8_8.14.i686
Vendor Fix fix
Workaround
Unresolved product id: AppStream-8.8.0.Z.E4S:python3-libxml2-debuginfo-0:2.9.7-16.el8_8.14.ppc64le
Vendor Fix fix
Workaround
Unresolved product id: AppStream-8.8.0.Z.E4S:python3-libxml2-debuginfo-0:2.9.7-16.el8_8.14.x86_64
Vendor Fix fix
Workaround
Unresolved product id: AppStream-8.8.0.Z.TUS:libxml2-0:2.9.7-16.el8_8.14.i686
Vendor Fix fix
Workaround
Unresolved product id: AppStream-8.8.0.Z.TUS:libxml2-0:2.9.7-16.el8_8.14.src
Vendor Fix fix
Workaround
Unresolved product id: AppStream-8.8.0.Z.TUS:libxml2-0:2.9.7-16.el8_8.14.x86_64
Vendor Fix fix
Workaround
Unresolved product id: AppStream-8.8.0.Z.TUS:libxml2-debuginfo-0:2.9.7-16.el8_8.14.i686
Vendor Fix fix
Workaround
Unresolved product id: AppStream-8.8.0.Z.TUS:libxml2-debuginfo-0:2.9.7-16.el8_8.14.x86_64
Vendor Fix fix
Workaround
Unresolved product id: AppStream-8.8.0.Z.TUS:libxml2-debugsource-0:2.9.7-16.el8_8.14.i686
Vendor Fix fix
Workaround
Unresolved product id: AppStream-8.8.0.Z.TUS:libxml2-debugsource-0:2.9.7-16.el8_8.14.x86_64
Vendor Fix fix
Workaround
Unresolved product id: AppStream-8.8.0.Z.TUS:libxml2-devel-0:2.9.7-16.el8_8.14.i686
Vendor Fix fix
Workaround
Unresolved product id: AppStream-8.8.0.Z.TUS:libxml2-devel-0:2.9.7-16.el8_8.14.x86_64
Vendor Fix fix
Workaround
Unresolved product id: AppStream-8.8.0.Z.TUS:python3-libxml2-0:2.9.7-16.el8_8.14.x86_64
Vendor Fix fix
Workaround
Unresolved product id: AppStream-8.8.0.Z.TUS:python3-libxml2-debuginfo-0:2.9.7-16.el8_8.14.i686
Vendor Fix fix
Workaround
Unresolved product id: AppStream-8.8.0.Z.TUS:python3-libxml2-debuginfo-0:2.9.7-16.el8_8.14.x86_64
Vendor Fix fix
Workaround
Unresolved product id: BaseOS-8.8.0.Z.E4S:libxml2-0:2.9.7-16.el8_8.14.i686
Vendor Fix fix
Workaround
Unresolved product id: BaseOS-8.8.0.Z.E4S:libxml2-0:2.9.7-16.el8_8.14.ppc64le
Vendor Fix fix
Workaround
Unresolved product id: BaseOS-8.8.0.Z.E4S:libxml2-0:2.9.7-16.el8_8.14.src
Vendor Fix fix
Workaround
Unresolved product id: BaseOS-8.8.0.Z.E4S:libxml2-0:2.9.7-16.el8_8.14.x86_64
Vendor Fix fix
Workaround
Unresolved product id: BaseOS-8.8.0.Z.E4S:libxml2-debuginfo-0:2.9.7-16.el8_8.14.i686
Vendor Fix fix
Workaround
Unresolved product id: BaseOS-8.8.0.Z.E4S:libxml2-debuginfo-0:2.9.7-16.el8_8.14.ppc64le
Vendor Fix fix
Workaround
Unresolved product id: BaseOS-8.8.0.Z.E4S:libxml2-debuginfo-0:2.9.7-16.el8_8.14.x86_64
Vendor Fix fix
Workaround
Unresolved product id: BaseOS-8.8.0.Z.E4S:libxml2-debugsource-0:2.9.7-16.el8_8.14.i686
Vendor Fix fix
Workaround
Unresolved product id: BaseOS-8.8.0.Z.E4S:libxml2-debugsource-0:2.9.7-16.el8_8.14.ppc64le
Vendor Fix fix
Workaround
Unresolved product id: BaseOS-8.8.0.Z.E4S:libxml2-debugsource-0:2.9.7-16.el8_8.14.x86_64
Vendor Fix fix
Workaround
Unresolved product id: BaseOS-8.8.0.Z.E4S:libxml2-devel-0:2.9.7-16.el8_8.14.i686
Vendor Fix fix
Workaround
Unresolved product id: BaseOS-8.8.0.Z.E4S:libxml2-devel-0:2.9.7-16.el8_8.14.ppc64le
Vendor Fix fix
Workaround
Unresolved product id: BaseOS-8.8.0.Z.E4S:libxml2-devel-0:2.9.7-16.el8_8.14.x86_64
Vendor Fix fix
Workaround
Unresolved product id: BaseOS-8.8.0.Z.E4S:python3-libxml2-0:2.9.7-16.el8_8.14.ppc64le
Vendor Fix fix
Workaround
Unresolved product id: BaseOS-8.8.0.Z.E4S:python3-libxml2-0:2.9.7-16.el8_8.14.x86_64
Vendor Fix fix
Workaround
Unresolved product id: BaseOS-8.8.0.Z.E4S:python3-libxml2-debuginfo-0:2.9.7-16.el8_8.14.i686
Vendor Fix fix
Workaround
Unresolved product id: BaseOS-8.8.0.Z.E4S:python3-libxml2-debuginfo-0:2.9.7-16.el8_8.14.ppc64le
Vendor Fix fix
Workaround
Unresolved product id: BaseOS-8.8.0.Z.E4S:python3-libxml2-debuginfo-0:2.9.7-16.el8_8.14.x86_64
Vendor Fix fix
Workaround
Unresolved product id: BaseOS-8.8.0.Z.TUS:libxml2-0:2.9.7-16.el8_8.14.i686
Vendor Fix fix
Workaround
Unresolved product id: BaseOS-8.8.0.Z.TUS:libxml2-0:2.9.7-16.el8_8.14.src
Vendor Fix fix
Workaround
Unresolved product id: BaseOS-8.8.0.Z.TUS:libxml2-0:2.9.7-16.el8_8.14.x86_64
Vendor Fix fix
Workaround
Unresolved product id: BaseOS-8.8.0.Z.TUS:libxml2-debuginfo-0:2.9.7-16.el8_8.14.i686
Vendor Fix fix
Workaround
Unresolved product id: BaseOS-8.8.0.Z.TUS:libxml2-debuginfo-0:2.9.7-16.el8_8.14.x86_64
Vendor Fix fix
Workaround
Unresolved product id: BaseOS-8.8.0.Z.TUS:libxml2-debugsource-0:2.9.7-16.el8_8.14.i686
Vendor Fix fix
Workaround
Unresolved product id: BaseOS-8.8.0.Z.TUS:libxml2-debugsource-0:2.9.7-16.el8_8.14.x86_64
Vendor Fix fix
Workaround
Unresolved product id: BaseOS-8.8.0.Z.TUS:libxml2-devel-0:2.9.7-16.el8_8.14.i686
Vendor Fix fix
Workaround
Unresolved product id: BaseOS-8.8.0.Z.TUS:libxml2-devel-0:2.9.7-16.el8_8.14.x86_64
Vendor Fix fix
Workaround
Unresolved product id: BaseOS-8.8.0.Z.TUS:python3-libxml2-0:2.9.7-16.el8_8.14.x86_64
Vendor Fix fix
Workaround
Unresolved product id: BaseOS-8.8.0.Z.TUS:python3-libxml2-debuginfo-0:2.9.7-16.el8_8.14.i686
Vendor Fix fix
Workaround
Unresolved product id: BaseOS-8.8.0.Z.TUS:python3-libxml2-debuginfo-0:2.9.7-16.el8_8.14.x86_64
Vendor Fix fix
Workaround
Threats
Impact Low

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          "text": "A flaw was found in the xmllint program distributed by the libxml2 package. A buffer over-read in the xmlHTMLPrintFileContext function in the xmllint.c file may be triggered when a crafted file is processed with the xmllint program using the `--htmlout` command line option, causing an application crash and resulting in a denial of service.",
          "title": "Vulnerability description"
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          "text": "libxml2: buffer over-read in xmlHTMLPrintFileContext in xmllint.c",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This issue only affects the xmllint program when the `--htmlout\u0027 command line option is used. Additionally, an application is not vulnerable if it does not use or expose the xmllint program.",
          "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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          "category": "external",
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            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
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          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Low"
        }
      ],
      "title": "libxml2: buffer over-read in xmlHTMLPrintFileContext in xmllint.c"
    }
  ]
}


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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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Detection rules are retrieved from Rulezet.

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