{
  "document": {
    "aggregate_severity": {
      "text": "Moderate"
    },
    "category": "csaf_security_advisory",
    "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"
      },
      {
        "category": "details",
        "text": "CVE-2026-16730: bump RLIMIT_NOFILE to hard limit at broker startup to prevent\n  fatal EMFILE during peer setup (DoS)",
        "title": "Details"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "https://tuxcare.com/contact/",
      "name": "TuxCare",
      "namespace": "https://tuxcare.com/"
    },
    "references": [
      {
        "category": "self",
        "summary": "https://cve.tuxcare.com/els/releases/CLSA-2026:1788817207",
        "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1788817207"
      },
      {
        "category": "self",
        "summary": "Canonical URL",
        "url": "https://security.tuxcare.com/csaf/v2/els_os/almalinux9.2esu/advisories/2026/clsa-2026_1788817207.json"
      }
    ],
    "tracking": {
      "current_release_date": "2026-09-07T21:40:43Z",
      "generator": {
        "date": "2026-09-07T21:40:43Z",
        "engine": {
          "name": "pyCSAF"
        }
      },
      "id": "CLSA-2026:1788817207",
      "initial_release_date": "2026-09-07T21:40:43Z",
      "revision_history": [
        {
          "date": "2026-09-07T21:40:43Z",
          "number": "1",
          "summary": "Initial version"
        }
      ],
      "status": "final",
      "version": "1"
    },
    "title": "dbus-broker: Fix of CVE-2026-16730"
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_name",
                "name": "AlmaLinux 9.2",
                "product": {
                  "name": "AlmaLinux 9.2",
                  "product_id": "AlmaLinux-9.2",
                  "product_identification_helper": {
                    "cpe": "cpe:2.3:o:almalinux:almalinux:9.2:*:*:*:*:*:*:*"
                  }
                }
              }
            ],
            "category": "product_family",
            "name": "AlmaLinux"
          }
        ],
        "category": "vendor",
        "name": "AlmaLinux OS Foundation"
      },
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version",
                "name": "dbus-broker-0:28-7.el9.tuxcare.els1.x86_64",
                "product": {
                  "name": "dbus-broker-0:28-7.el9.tuxcare.els1.x86_64",
                  "product_id": "dbus-broker-0:28-7.el9.tuxcare.els1.x86_64",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/tuxcare/dbus-broker@28-7.el9.tuxcare.els1?arch=x86_64"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "x86_64"
          }
        ],
        "category": "vendor",
        "name": "TuxCare"
      }
    ],
    "relationships": [
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "dbus-broker-0:28-7.el9.tuxcare.els1.x86_64 as a component of AlmaLinux 9.2",
          "product_id": "AlmaLinux-9.2:dbus-broker-0:28-7.el9.tuxcare.els1.x86_64"
        },
        "product_reference": "dbus-broker-0:28-7.el9.tuxcare.els1.x86_64",
        "relates_to_product_reference": "AlmaLinux-9.2"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-16730",
      "cwe": {
        "id": "CWE-755",
        "name": "Improper Handling of Exceptional Conditions"
      },
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in dbus-broker. When the process file-descriptor limit is reached, EMFILE/ENFILE errors during peer setup (notably SO_PEERPIDFD) are handled as fatal failures, causing the broker to exit. A local attacker who can open many connections to the user session bus can trigger this and deny service to the desktop session. Flatpak applications can reach the host session bus through the dbus proxy.",
          "title": "Vulnerability description"
        }
      ],
      "product_status": {
        "fixed": [
          "AlmaLinux-9.2:dbus-broker-0:28-7.el9.tuxcare.els1.x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://cve.tuxcare.com/els/cve/CVE-2026-16730"
        },
        {
          "category": "external",
          "summary": "https://access.redhat.com/errata/RHSA-2026:61340",
          "url": "https://access.redhat.com/errata/RHSA-2026:61340"
        },
        {
          "category": "external",
          "summary": "https://access.redhat.com/errata/RHSA-2026:61355",
          "url": "https://access.redhat.com/errata/RHSA-2026:61355"
        },
        {
          "category": "external",
          "summary": "https://access.redhat.com/security/cve/CVE-2026-16730",
          "url": "https://access.redhat.com/security/cve/CVE-2026-16730"
        },
        {
          "category": "external",
          "summary": "https://bugzilla.redhat.com/show_bug.cgi?id=2506348",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2506348"
        },
        {
          "category": "external",
          "summary": "https://github.com/bus1/dbus-broker/issues/435",
          "url": "https://github.com/bus1/dbus-broker/issues/435"
        }
      ],
      "release_date": "2026-07-24T12:16:00Z",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-09-07T21:40:09.315263Z",
          "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els/releases/CLSA-2026:1788817207",
          "product_ids": [
            "AlmaLinux-9.2:dbus-broker-0:28-7.el9.tuxcare.els1.x86_64"
          ],
          "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1788817207"
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ]
    }
  ]
}