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        "text": "An update for yggdrasil is now available for Red Hat Enterprise Linux 10.\n\nRed Hat Product Security has rated this update as having a security impact of Important. 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.",
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        "text": "yggdrasil is a system daemon that subscribes to topics on an MQTT broker and routes any data received on the topics to an appropriate child \"worker\" process, exchanging data with its worker processes through a D-Bus message broker.\n\nSecurity Fix(es):\n\n* net/url: Incorrect parsing of IPv6 host literals in net/url (CVE-2026-25679)\n\n* crypto/tls: golang: Go crypto/tls: Denial of Service via multiple TLS 1.3 key update messages (CVE-2026-32283)\n\nFor 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.",
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        "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 Red Hat Inc. and provide a link to the original.",
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      "cve": "CVE-2026-32283",
      "cwe": {
        "id": "CWE-764",
        "name": "Multiple Locks of a Critical Resource"
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      "ids": [
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          "category": "description",
          "text": "A flaw was found in the `crypto/tls` package within the Go (golang) standard library, specifically affecting TLS 1.3 connections. A remote attacker can exploit this vulnerability by sending multiple key update messages in a single record after the handshake. This can cause the connection to deadlock, leading to uncontrolled consumption of resources and ultimately a denial of service (DoS).",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "crypto/tls: golang: Go crypto/tls: Denial of Service via multiple TLS 1.3 key update messages",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "Important: A flaw in the Go `crypto/tls` package allows a remote attacker to cause a denial of service in applications using TLS 1.3. By sending multiple key update messages in a single record post-handshake, an attacker can trigger a connection deadlock, leading to uncontrolled resource consumption. This impacts Red Hat products utilizing the affected Go standard library for TLS 1.3 connections.",
          "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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            "CRB-10.2.Z:yggdrasil-debugsource-0:0.4.9-4.el10_2.x86_64",
            "CRB-10.2.Z:yggdrasil-devel-0:0.4.9-4.el10_2.aarch64",
            "CRB-10.2.Z:yggdrasil-devel-0:0.4.9-4.el10_2.ppc64le",
            "CRB-10.2.Z:yggdrasil-devel-0:0.4.9-4.el10_2.s390x",
            "CRB-10.2.Z:yggdrasil-devel-0:0.4.9-4.el10_2.x86_64",
            "CRB-10.2.Z:yggdrasil-examples-debuginfo-0:0.4.9-4.el10_2.aarch64",
            "CRB-10.2.Z:yggdrasil-examples-debuginfo-0:0.4.9-4.el10_2.ppc64le",
            "CRB-10.2.Z:yggdrasil-examples-debuginfo-0:0.4.9-4.el10_2.s390x",
            "CRB-10.2.Z:yggdrasil-examples-debuginfo-0:0.4.9-4.el10_2.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "crypto/tls: golang: Go crypto/tls: Denial of Service via multiple TLS 1.3 key update messages"
    }
  ]
}