{
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      "text": "High"
    },
    "category": "csaf_vex",
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    "distribution": {
      "text": "TuxCare License Agreement",
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        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en",
    "notes": [
      {
        "category": "legal_disclaimer",
        "text": "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 Cloud Linux Inc. and provide a link to the original.",
        "title": "Terms of Use"
      }
    ],
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      "contact_details": "https://tuxcare.com/contact/",
      "name": "TuxCare",
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        "category": "self",
        "summary": "Canonical URL",
        "url": "https://security.tuxcare.com/csaf/v2/els_os/oraclelinux6els/vex/2026/cve-2026-42944-els_os-oraclelinux6els.json"
      }
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      "generator": {
        "date": "2026-10-28T11:32:52Z",
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      "id": "CVE-2026-42944-ELS_OS-ORACLELINUX6ELS",
      "initial_release_date": "2026-05-20T10:16:00Z",
      "revision_history": [
        {
          "date": "2026-05-20T10:16:00Z",
          "number": "1",
          "summary": "Initial version"
        },
        {
          "date": "2026-10-28T11:32:52Z",
          "number": "2",
          "summary": "Official Publication"
        }
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      "status": "final",
      "version": "2"
    },
    "title": "Security update on CVE-2026-42944"
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  "vulnerabilities": [
    {
      "cve": "CVE-2026-42944",
      "cwe": {
        "id": "CWE-197",
        "name": "Numeric Truncation Error"
      },
      "notes": [
        {
          "category": "description",
          "text": "NLnet Labs Unbound 1.14.0 up to and including version 1.25.0 has a vulnerability that results in heap overflow when encoding multiple NSID and/or DNS Cookie EDNS and/or EDNS Padding options in the reply packet. The relevant options ('nsid', 'answer-cookie', 'pad-responses' (default)) need to be enabled for the vulnerability to be exploited. An adversary who can query Unbound can exploit the vulnerability by attaching multiple NSID and/or DNS Cookie EDNS and/or EDNS Padding options to the query. A flaw in the size calculation of the EDNS field truncates the correct value which allows the encoder to overflow the available space when writing. Those two combined lead to a heap overflow write of Unbound controlled data and eventually a crash. Unbound 1.25.1 contains a patch with a fix to de-duplicate the EDNS options and a fix to prevent truncation of the EDNS field size calculation.",
          "title": "Vulnerability description"
        },
        {
          "category": "other",
          "text": "TuxCare has assessed that this vulnerability does not impact any currently supported TuxCare products. This evaluation may change as new information becomes available. For additional details regarding this vulnerability and affected products, refer to the provided references.",
          "title": "Statement"
        }
      ],
      "product_status": {
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          "Oracle-Linux-6:unbound-python-0:1.4.20-29.el6_10.1.tuxcare.els2.i686",
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        ]
      },
      "references": [
        {
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          "summary": "Canonical URL",
          "url": "https://cve.tuxcare.com/els/cve/CVE-2026-42944"
        },
        {
          "category": "external",
          "summary": "https://www.nlnetlabs.nl/downloads/unbound/CVE-2026-42944.txt",
          "url": "https://www.nlnetlabs.nl/downloads/unbound/CVE-2026-42944.txt"
        },
        {
          "category": "external",
          "summary": "https://access.redhat.com/errata/RHSA-2026:19752",
          "url": "https://access.redhat.com/errata/RHSA-2026:19752"
        },
        {
          "category": "external",
          "summary": "https://access.redhat.com/errata/RHSA-2026:23231",
          "url": "https://access.redhat.com/errata/RHSA-2026:23231"
        },
        {
          "category": "external",
          "summary": "https://access.redhat.com/errata/RHSA-2026:24365",
          "url": "https://access.redhat.com/errata/RHSA-2026:24365"
        },
        {
          "category": "external",
          "summary": "https://access.redhat.com/errata/RHSA-2026:24369",
          "url": "https://access.redhat.com/errata/RHSA-2026:24369"
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        {
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          "url": "https://access.redhat.com/security/cve/CVE-2026-42944"
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          "summary": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-42944.json",
          "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-42944.json"
        }
      ],
      "release_date": "2026-05-20T10:16:00Z",
      "threats": [
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          "details": "Important"
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        {
          "category": "impact",
          "date": "2026-10-16T08:51:12.719492Z",
          "details": "important",
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