{
  "fix": "OPENSUSE-SU-2026:21533-1",
  "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-21533-1",
  "summary": "OPENSUSE-SU-2026:21533-1, released August 5, 2026, fixes 7 CVEs in dnsdist (version 1.9.15-160000.1.1). None of them is reported as exploited. Patch Radar priority: Routine.",
  "platform": "linux",
  "type": "advisory",
  "title": "dnsdist security update",
  "released": "2026-08-05T09:13:07Z",
  "priority": "Routine",
  "priorityTier": 4,
  "priorityReason": "Closes 7 CVEs, none high severity",
  "supported": true,
  "cveCount": 7,
  "exploitedCveCount": 0,
  "kevCveCount": 0,
  "ransomwareCveCount": 0,
  "maxEpss": 0.00739,
  "maxCvss": 5.3,
  "vendorAdvisory": "https://osv.dev/vulnerability/openSUSE-SU-2026:21533-1",
  "appliesTo": [
    {
      "product": "dnsdist",
      "productUrl": "https://patchblox.com/security/product/linux/dnsdist",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "1.9.15-160000.1.1",
      "supported": true
    }
  ],
  "cves": [
    {
      "cveId": "CVE-2026-40210",
      "url": "https://patchblox.com/security/cve/CVE-2026-40210",
      "title": "dnsdist: out-of-bounds read when \u0060SetMacAddrAction\u0060 is used can lead to uninitialized memory being sent over",
      "priority": "Routine",
      "severity": "medium",
      "cvss": 4.8,
      "epss": 0.00739,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-40209",
      "url": "https://patchblox.com/security/cve/CVE-2026-40209",
      "title": "dnsdist: outgoing TCP connections to backend can get stuck until a timeout occurs when specially crafted IXFR",
      "priority": "Routine",
      "severity": "medium",
      "cvss": 5.3,
      "epss": 0.007,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-40211",
      "url": "https://patchblox.com/security/cve/CVE-2026-40211",
      "title": "dnsdist: crafted DNS over HTTP/3 queries can trigger an exception that prevents memory from being freed and can",
      "priority": "Routine",
      "severity": "medium",
      "cvss": 5.3,
      "epss": 0.007,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-42005",
      "url": "https://patchblox.com/security/cve/CVE-2026-42005",
      "title": "dnsdist: crafted web request can cause unlimited memory allocation in the internal web server and lead to a DoS",
      "priority": "Routine",
      "severity": "medium",
      "cvss": 4.3,
      "epss": 0.00625,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-40208",
      "url": "https://patchblox.com/security/cve/CVE-2026-40208",
      "title": "dnsdist: processing of DoH3 queries can be delayed via DoH3 GET queries with an invalid DATA frames",
      "priority": "Routine",
      "severity": "low",
      "cvss": 3.7,
      "epss": 0.00402,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-40011",
      "url": "https://patchblox.com/security/cve/CVE-2026-40011",
      "title": "dnsdist: invalid output produced in the prometheus endpoint when a large number of crafted DNS queries are sent",
      "priority": "Routine",
      "severity": "low",
      "cvss": 3.7,
      "epss": 0.00225,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-42004",
      "url": "https://patchblox.com/security/cve/CVE-2026-42004",
      "title": "dnsdist: crafted EDNS OPT record will be ignored by filtering rules, but will be rewritten as a valid OPT",
      "priority": "Routine",
      "severity": "low",
      "cvss": 3.7,
      "epss": 0.00225,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    }
  ],
  "dataAsOf": "2026-11-11T07:45:43Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}