rlsa-2026:36320
Vulnerability from osv_rocky
Published
2026-07-28 18:05
Modified
2026-07-29 18:08
Summary
Important: unbound security update
Details

The unbound packages provide a validating, recursive, and caching DNS or DNSSEC resolver.

Security Fix(es):

  • unbound: Unbound: Denial of Service via excessive EDNS options (CVE-2026-41292)

  • unbound: Unbound: Cache manipulation via 'ghost domain names' attack (CVE-2026-40622)

  • unbound: Unbound: Denial of Service due to excessive resource consumption with large DNS Resource Record Sets (CVE-2026-44390)

  • unbound: Unbound: Denial of Service due to degraded resolution performance in jostle logic (CVE-2026-42534)

For 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.

Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Credits
Rocky Enterprise Software Foundation
Red Hat
References
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "Rocky Linux:10",
        "name": "unbound",
        "purl": "pkg:rpm/rocky-linux/unbound?distro=rocky-linux-10\u0026epoch=0"
      },
      "ranges": [
        {
          "database_specific": {
            "yum_repository": "AppStream"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0:1.24.2-7.el10_2.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "credits": [
    {
      "name": "Rocky Enterprise Software Foundation"
    },
    {
      "name": "Red Hat"
    }
  ],
  "details": "The unbound packages provide a validating, recursive, and caching DNS or DNSSEC resolver. \n\nSecurity Fix(es):\n\n* unbound: Unbound: Denial of Service via excessive EDNS options (CVE-2026-41292)\n\n* unbound: Unbound: Cache manipulation via \u0027ghost domain names\u0027 attack (CVE-2026-40622)\n\n* unbound: Unbound: Denial of Service due to excessive resource consumption with large DNS Resource Record Sets (CVE-2026-44390)\n\n* unbound: Unbound: Denial of Service due to degraded resolution performance in jostle logic (CVE-2026-42534)\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.",
  "id": "RLSA-2026:36320",
  "modified": "2026-07-29T18:08:24.838578Z",
  "published": "2026-07-28T18:05:53.082410Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://errata.rockylinux.org/RLSA-2026:36320"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2480125"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2480127"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2480130"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2480131"
    }
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Important: unbound security update",
  "upstream": [
    "CVE-2026-40622",
    "CVE-2026-41292",
    "CVE-2026-42534",
    "CVE-2026-44390"
  ]
}



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