{
  "document": {
    "aggregate_severity": {
      "text": "High"
    },
    "category": "csaf_vex",
    "csaf_version": "2.0",
    "distribution": {
      "text": "TuxCare License Agreement",
      "tlp": {
        "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"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "https://tuxcare.com/contact/",
      "name": "TuxCare",
      "namespace": "https://tuxcare.com/"
    },
    "references": [
      {
        "category": "self",
        "summary": "Canonical URL",
        "url": "https://security.tuxcare.com/csaf/v2/els_os/rhel7els/vex/2026/cve-2026-61915-els_os-rhel7els.json"
      }
    ],
    "tracking": {
      "current_release_date": "2026-10-15T18:11:12Z",
      "generator": {
        "date": "2026-10-15T18:11:12Z",
        "engine": {
          "name": "pyCSAF"
        }
      },
      "id": "CVE-2026-61915-ELS_OS-RHEL7ELS",
      "initial_release_date": "2026-09-09T20:18:00Z",
      "revision_history": [
        {
          "date": "2026-09-09T20:18:00Z",
          "number": "1",
          "summary": "Initial version"
        },
        {
          "date": "2026-09-17T12:36:19Z",
          "number": "2",
          "summary": "Official Publication"
        },
        {
          "date": "2026-10-01T04:39:17Z",
          "number": "3",
          "summary": "Update document"
        },
        {
          "date": "2026-10-15T18:11:12Z",
          "number": "4",
          "summary": "Update document"
        }
      ],
      "status": "final",
      "version": "4"
    },
    "title": "Security update on CVE-2026-61915"
  },
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        "branches": [
          {
            "branches": [
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                "category": "product_name",
                "name": "Red Hat Enterprise Linux 7",
                "product": {
                  "name": "Red Hat Enterprise Linux 7",
                  "product_id": "Red-Hat-7",
                  "product_identification_helper": {
                    "cpe": "cpe:2.3:o:redhat:enterprise_linux:7:*:*:*:*:*:*:*"
                  }
                }
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            ],
            "category": "product_family",
            "name": "Red Hat Enterprise Linux"
          }
        ],
        "category": "vendor",
        "name": "Red Hat, Inc."
      },
      {
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        "category": "vendor",
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          "product_id": "Red-Hat-7:cyrus-imapd-0:2.4.17-15.el7.tuxcare.els1.x86_64"
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        "relates_to_product_reference": "Red-Hat-7"
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        "relates_to_product_reference": "Red-Hat-7"
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  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-61915",
      "cwe": {
        "id": "CWE-415",
        "name": "Double Free"
      },
      "notes": [
        {
          "category": "description",
          "text": "An issue was discovered in Cyrus IMAP before 3.12.4. There is a VPATCH BYPARAM double-free. An authenticated calendar user could crash a Cyrus CalDAV worker with a PATCH containing PATCH-ACTION=\"BYPARAM@...\" against a resource with two or more properties of the matched kind. The memory holding the selector would be freed once on each iteration over the properties.",
          "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": {
        "known_not_affected": [
          "Red-Hat-7:cyrus-imapd-0:2.4.17-15.el7.tuxcare.els1.x86_64",
          "Red-Hat-7:cyrus-imapd-devel-0:2.4.17-15.el7.tuxcare.els1.i686",
          "Red-Hat-7:cyrus-imapd-devel-0:2.4.17-15.el7.tuxcare.els1.x86_64",
          "Red-Hat-7:cyrus-imapd-utils-0:2.4.17-15.el7.tuxcare.els1.x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://cve.tuxcare.com/els/cve/CVE-2026-61915"
        },
        {
          "category": "external",
          "summary": "https://cyrusimap.org",
          "url": "https://cyrusimap.org/"
        },
        {
          "category": "external",
          "summary": "https://www.cyrusimap.org/3.12/imap/download/release-notes/3.10/x/3.10.4.html",
          "url": "https://www.cyrusimap.org/3.12/imap/download/release-notes/3.10/x/3.10.4.html"
        },
        {
          "category": "external",
          "summary": "https://www.cyrusimap.org/3.12/imap/download/release-notes/3.12/x/3.12.4.html",
          "url": "https://www.cyrusimap.org/3.12/imap/download/release-notes/3.12/x/3.12.4.html"
        },
        {
          "category": "external",
          "summary": "https://www.cyrusimap.org/3.12/imap/download/release-notes/3.8/x/3.8.8.html",
          "url": "https://www.cyrusimap.org/3.12/imap/download/release-notes/3.8/x/3.8.8.html"
        }
      ],
      "release_date": "2026-09-09T20:18:00Z",
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        },
        {
          "category": "impact",
          "date": "2026-10-15T15:25:22.359438Z",
          "details": "The cyrus-imapd package for RHEL 7 ELS is not affected by CVE-2026-61915. The vulnerable CalDAV VPATCH BYPARAM code is not built into the shipped package: the build has no HTTP/DAV support enabled and the shipped source contains no CalDAV paths, since the CalDAV subsystem was introduced upstream in the Cyrus 3.0 line while this platform ships cyrus-imapd 2.4.17.",
          "product_ids": [
            "Red-Hat-7:cyrus-imapd-0:2.4.17-15.el7.tuxcare.els1.x86_64",
            "Red-Hat-7:cyrus-imapd-devel-0:2.4.17-15.el7.tuxcare.els1.i686",
            "Red-Hat-7:cyrus-imapd-devel-0:2.4.17-15.el7.tuxcare.els1.x86_64",
            "Red-Hat-7:cyrus-imapd-utils-0:2.4.17-15.el7.tuxcare.els1.x86_64"
          ]
        }
      ]
    }
  ]
}