{
  "cveId": "CVE-2026-69184",
  "url": "https://patchblox.com/security/cve/CVE-2026-69184",
  "summary": "CVE-2026-69184 is fixed in 23 products on 1 platform, first by DEBIAN-CVE-2026-69184, released August 11, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "c-ares: CPU-exhaustion denial of service via unbounded DNS name compression pointer chains",
  "description": "c-ares is an asynchronous resolver library. Prior to 1.34.7, ares_dns_name_parse() enforces backward DNS compression pointers but does not bound the total pointer hops or assembled name length. A malicious DNS server can send a response containing a long descending pointer chain and many resource records whose NAME or RDATA fields refer to the chain, causing repeated decompression work that grows quadratically with message size. A single crafted response can stall the single-threaded c-ares event loop and deny DNS resolution, without causing memory corruption or information disclosure. This issue is fixed in version 1.34.7.",
  "published": "2026-08-17T09:00:00Z",
  "severity": "Important",
  "cvss": 7.5,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
  "cwe": "Inefficient Algorithmic Complexity",
  "epss": 0.00479,
  "epssPercentile": 0.416,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69184",
  "fixes": [
    {
      "platform": "linux",
      "product": "c-ares",
      "release": "Debian 14",
      "fixedVersion": "1.34.7-1",
      "fix": "DEBIAN-CVE-2026-69184",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-69184",
      "released": "2026-08-11T16:03:09Z"
    },
    {
      "platform": "linux",
      "product": "c-ares",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "1.34.8-160000.1.1",
      "fix": "OPENSUSE-SU-2026:21721-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-21721-1",
      "released": "2026-09-01T15:48:33Z"
    },
    {
      "platform": "linux",
      "product": "c-ares",
      "release": "sles 15.6",
      "fixedVersion": "1.34.8-150000.3.29.1",
      "fix": "SUSE-SU-2026:4021-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-4021-1",
      "released": "2026-09-07T07:42:20Z"
    },
    {
      "platform": "linux",
      "product": "c-ares",
      "release": "sles 15.7",
      "fixedVersion": "1.34.8-150000.3.29.1",
      "fix": "SUSE-SU-2026:4021-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-4021-1",
      "released": "2026-09-07T07:42:20Z"
    },
    {
      "platform": "linux",
      "product": "c-ares",
      "release": "sles 16.0",
      "fixedVersion": "1.34.8-160000.1.1",
      "fix": "SUSE-SU-2026:23597-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-23597-1",
      "released": "2026-09-01T15:51:00Z"
    },
    {
      "platform": "linux",
      "product": "libc-ares2",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "1.14.0-1ubuntu0.2\u002Besm3",
      "fix": "libc-ares2 1.14.0-1ubuntu0.2\u002Besm3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libc-ares2-1.14.0-1ubuntu0.2-esm3",
      "released": "2026-09-18T11:17:00Z"
    },
    {
      "platform": "linux",
      "product": "libc-ares2",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "1.15.0-1ubuntu0.5\u002Besm1",
      "fix": "libc-ares2 1.15.0-1ubuntu0.5\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-libc-ares2-1.15.0-1ubuntu0.5-esm1",
      "released": "2026-09-18T11:17:00Z"
    },
    {
      "platform": "linux",
      "product": "libc-ares2",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "1.18.1-1ubuntu0.22.04.4",
      "fix": "libc-ares2 1.18.1-1ubuntu0.22.04.4",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-libc-ares2-1.18.1-1ubuntu0.22.04.4",
      "released": "2026-09-18T11:17:00Z"
    },
    {
      "platform": "linux",
      "product": "libc-ares2",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "1.34.6-1ubuntu0.2",
      "fix": "libc-ares2 1.34.6-1ubuntu0.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-libc-ares2-1.34.6-1ubuntu0.2",
      "released": "2026-09-18T11:17:00Z"
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    {
      "platform": "linux",
      "product": "libcares2",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "1.27.0-1.0ubuntu1.1",
      "fix": "libcares2 1.27.0-1.0ubuntu1.1",
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      "released": "2026-09-18T11:17:00Z"
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      "release": "Ubuntu 26.04.1 LTS (resolute)",
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      "fix": "libcares2 1.34.6-1ubuntu0.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-libcares2-1.34.6-1ubuntu0.2",
      "released": "2026-09-18T11:17:00Z"
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      "product": "nodejs22",
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  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T19:12:23Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}