{
  "cveId": "CVE-2026-24401",
  "url": "https://patchblox.com/security/cve/CVE-2026-24401",
  "summary": "CVE-2026-24401 is fixed in 21 products on 1 platform, first by DEBIAN-CVE-2026-24401, released January 24, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "avahi-discover: Avahi is a system which facilitates service discovery on a local network via the mDNS/DNS-SD protocol suite",
  "description": "Avahi is a system which facilitates service discovery on a local network via the mDNS/DNS-SD protocol suite. In versions 0.9rc2 and below, avahi-daemon can be crashed via a segmentation fault by sending an unsolicited mDNS response containing a recursive CNAME record, where the alias and canonical name point to the same domain (e.g., \u0022h.local\u0022 as a CNAME for \u0022h.local\u0022). This causes unbounded recursion in the lookup_handle_cname function, leading to stack exhaustion. The vulnerability affects record browsers where AVAHI_LOOKUP_USE_MULTICAST is set explicitly, which includes record browsers created by resolvers used by nss-mdns. This issue is patched in commit 78eab31128479f06e30beb8c1cbf99dd921e2524, which is part of version 0.9-rc3.",
  "published": "2026-01-23T18:15:00Z",
  "severity": "Medium",
  "cvss": 6.5,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
  "epss": 0.00373,
  "epssPercentile": 0.31412,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "avahi",
      "release": "Debian 14",
      "fixedVersion": "0.8-18",
      "fix": "DEBIAN-CVE-2026-24401",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-24401",
      "released": "2026-01-24T02:15:48Z"
    },
    {
      "platform": "linux",
      "product": "avahi",
      "release": "opensuse-leap 15.6",
      "fixedVersion": "0.8-150600.15.15.1",
      "fix": "SUSE-SU-2026:1441-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-1441-1",
      "released": "2026-04-17T14:18:21Z"
    },
    {
      "platform": "linux",
      "product": "avahi",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "0.8-160000.5.1",
      "fix": "OPENSUSE-SU-2026:21014-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-21014-1",
      "released": "2026-06-22T14:40:15Z"
    },
    {
      "platform": "linux",
      "product": "avahi",
      "release": "sles 15.7",
      "fixedVersion": "0.8-150600.15.15.1",
      "fix": "SUSE-SU-2026:1441-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-1441-1",
      "released": "2026-04-17T14:18:21Z"
    },
    {
      "platform": "linux",
      "product": "avahi",
      "release": "sles 16.0",
      "fixedVersion": "0.8-160000.5.1",
      "fix": "SUSE-SU-2026:22338-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-22338-1",
      "released": "2026-06-22T14:38:22Z"
    },
    {
      "platform": "linux",
      "product": "avahi-autoipd",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "0.7-3.1ubuntu1.3\u002Besm4",
      "fix": "avahi-autoipd 0.7-3.1ubuntu1.3\u002Besm4",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-avahi-autoipd-0.7-3.1ubuntu1.3-esm4",
      "released": "2026-04-03T16:17:00Z"
    },
    {
      "platform": "linux",
      "product": "avahi-autoipd",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "0.7-4ubuntu7.3\u002Besm2",
      "fix": "avahi-autoipd 0.7-4ubuntu7.3\u002Besm2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-avahi-autoipd-0.7-4ubuntu7.3-esm2",
      "released": "2026-04-03T16:17:00Z"
    },
    {
      "platform": "linux",
      "product": "avahi-autoipd",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "0.8-5ubuntu5.5",
      "fix": "avahi-autoipd 0.8-5ubuntu5.5",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-avahi-autoipd-0.8-5ubuntu5.5",
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    {
      "platform": "linux",
      "product": "avahi-autoipd",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "0.8-13ubuntu6.2",
      "fix": "avahi-autoipd 0.8-13ubuntu6.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-avahi-autoipd-0.8-13ubuntu6.2",
      "released": "2026-04-03T16:17:00Z"
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    {
      "platform": "linux",
      "product": "avahi-autoipd",
      "release": "Ubuntu 25.10 (questing)",
      "fixedVersion": "0.8-16ubuntu3.2",
      "fix": "avahi-autoipd 0.8-16ubuntu3.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-questing-avahi-autoipd-0.8-16ubuntu3.2",
      "released": "2026-04-03T16:17:00Z"
    },
    {
      "platform": "linux",
      "product": "avahi-daemon",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "0.7-3.1ubuntu1.3\u002Besm4",
      "fix": "avahi-daemon 0.7-3.1ubuntu1.3\u002Besm4",
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      "platform": "linux",
      "product": "avahi-daemon",
      "release": "Ubuntu 20.04 LTS (focal)",
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    {
      "platform": "linux",
      "product": "avahi-daemon",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
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      "platform": "linux",
      "product": "avahi-daemon",
      "release": "Ubuntu 24.04.5 LTS (noble)",
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      "fix": "avahi-daemon 0.8-13ubuntu6.2",
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      "released": "2026-04-03T16:17:00Z"
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      "platform": "linux",
      "product": "avahi-discover",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "0.7-3.1ubuntu1.3\u002Besm4",
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    {
      "platform": "linux",
      "product": "avahi-discover",
      "release": "Ubuntu 20.04 LTS (focal)",
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      "released": "2026-04-03T16:17:00Z"
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    {
      "platform": "linux",
      "product": "avahi-discover",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
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      "platform": "linux",
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      "platform": "linux",
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    {
      "platform": "linux",
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    {
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    {
      "platform": "linux",
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      "platform": "linux",
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      "released": "2026-06-22T14:40:15Z"
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    {
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    },
    {
      "platform": "linux",
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      "platform": "linux",
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      "platform": "linux",
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  "dataAsOf": "2026-11-08T06:59:42Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}