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oesa-2025-1703
Vulnerability from osv_openeuler
Published
2025-06-27 11:08
Modified
2026-08-06 11:08
Summary
libxml2 security update
Details

This library allows to manipulate XML files. It includes support to read, modify and write XML and HTML files. There is DTDs support this includes parsing and validation even with complex DtDs, either at parse time or later once the document has been modified. The output can be a simple SAX stream or and in-memory DOM like representations. In this case one can use the built-in XPath and XPointer implementation to select sub nodes or ranges. A flexible Input/Output mechanism is available, with existing HTTP and FTP modules and combined to an URI library.

Security Fix(es):

A flaw was found in libxml2's xmlBuildQName function, where integer overflows in buffer size calculations can lead to a stack-based buffer overflow. This issue can result in memory corruption or a denial of service when processing crafted input.(CVE-2025-6021)

Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "libxml2-2.9.14-18.oe2203sp4.aarch64.rpm",
          "libxml2-debuginfo-2.9.14-18.oe2203sp4.aarch64.rpm",
          "libxml2-debugsource-2.9.14-18.oe2203sp4.aarch64.rpm",
          "libxml2-devel-2.9.14-18.oe2203sp4.aarch64.rpm",
          "python3-libxml2-2.9.14-18.oe2203sp4.aarch64.rpm"
        ],
        "noarch": [
          "libxml2-help-2.9.14-18.oe2203sp4.noarch.rpm"
        ],
        "src": [
          "libxml2-2.9.14-18.oe2203sp4.src.rpm"
        ],
        "x86_64": [
          "libxml2-2.9.14-18.oe2203sp4.x86_64.rpm",
          "libxml2-debuginfo-2.9.14-18.oe2203sp4.x86_64.rpm",
          "libxml2-debugsource-2.9.14-18.oe2203sp4.x86_64.rpm",
          "libxml2-devel-2.9.14-18.oe2203sp4.x86_64.rpm",
          "python3-libxml2-2.9.14-18.oe2203sp4.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:22.03-LTS-SP4",
        "name": "libxml2",
        "purl": "pkg:rpm/openEuler/libxml2\u0026distro=openEuler-22.03-LTS-SP4"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.9.14-18.oe2203sp4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "High"
  },
  "details": "This library allows to manipulate XML files. It includes support to read, modify and write XML and HTML files. There is DTDs support this includes parsing and validation even with complex DtDs, either at parse time or later once the document has been modified. The output can be a simple SAX stream or and in-memory DOM like representations. In this case one can use the built-in XPath and XPointer implementation to select sub nodes or ranges. A flexible Input/Output mechanism is available, with existing HTTP and FTP modules and combined to an URI library.\r\n\r\nSecurity Fix(es):\n\nA flaw was found in libxml2\u0026apos;s xmlBuildQName function, where integer overflows in buffer size calculations can lead to a stack-based buffer overflow. This issue can result in memory corruption or a denial of service when processing crafted input.(CVE-2025-6021)",
  "id": "OESA-2025-1703",
  "modified": "2026-08-06T11:08:47Z",
  "published": "2025-06-27T11:08:47Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2025-1703"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-6021"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "libxml2 security update",
  "upstream": [
    "CVE-2025-6021"
  ]
}



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