Security update for unbound

{
  "id": "8d8af81a83c4a5dbff6d55f2c3ded1e65a2b96abc5bf24770d0d1ed606d9248c",
  "url": "https://osv.dev/vulnerability/SUSE-SU-2026%3A24226-1",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Security update for unbound",
    "summary": "This update for unbound fixes the following issues: - CVE-2026-77860: 'serve-expired' can bypass Unbound 'wait-limit' (bsc#1280403). - CVE-2026-77955: Possible ZONEMD verification bypass window (bsc#1280404). - CVE-2026-78227: Use-after-free in DoQ stream output buffer on reset re-transmission (bsc#1280405). - CVE-2026-80225: Possible degradation of service from continuous queries on the same TCP/DoT connection (bsc#1280406). - CVE-2026-81634: Possible heap buffer overflow during DNSSEC canonicalization (bsc#1280409). - CVE-2026-81642: Heap buffer overflow and possible Remote Code Execution when digesting DNSKEY (bsc#1280411). - CVE-2026-82717: CNAME synthesis could lead to heap corruption (bsc#1280412). - CVE-2026-82720: Use-after-free in DoH stream cleanup code path (bsc#1280413). - CVE-2026-85501: Retrap: Novel Vulnerabilities to launch Algorithmic Complexity Attacks on DNSSEC (bsc#1280414). Changes for unbound: - Update to 1.26.1: * Update icannbundle.pem certificates in unbound-anchor, valid for 2009-2029 and 2025-2045 * Add max-transfer-size and max-transfer-time options to limit auth-zone and rpz transfer size and time, default disabled * Overload local_data_remove in unbound-control to also remove specific records * Add local-zone types block_aaaa, block_a_wdata and block_aaaa_wdata; fix respip+dns64 to use original A records instead of ones already modified by respip * ipsecmod hook script now needs to start with '#!/bin/sh', it is executed with execv instead of syst",
    "evidence": "osv:SUSE-SU-2026:24226-1",
    "products": [
      {
        "name": {
          "value": "unbound",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1.26.1-160000.1.1",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "unbound",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1.26.1-160000.1.1",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "SUSE-SU-2026:24226-1",
      "aliases": [
        "SUSE-SU-2026:24226-1"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1.26.1-160000.1.1"
                }
              ]
            }
          ],
          "package": {
            "name": "unbound",
            "purl": "pkg:rpm/suse/unbound&distro=SUSE%20Linux%20Enterprise%20Server%2016.0",
            "ecosystem": "SUSE:Linux Enterprise Server 16.0"
          },
          "database_specific": {
            "source": "https://ftp.suse.com/pub/projects/security/osv/SUSE-SU-2026:24226-1.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "unbound": "1.26.1-160000.1.1",
                "libunbound8": "1.26.1-160000.1.1",
                "unbound-devel": "1.26.1-160000.1.1",
                "unbound-anchor": "1.26.1-160000.1.1",
                "python3-unbound": "1.26.1-160000.1.1"
              }
            ]
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1.26.1-160000.1.1"
                }
              ]
            }
          ],
          "package": {
            "name": "unbound",
            "purl": "pkg:rpm/suse/unbound&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20applications%2016.0",
            "ecosystem": "SUSE:Linux Enterprise Server for SAP applications 16.0"
          },
          "database_specific": {
            "source": "https://ftp.suse.com/pub/projects/security/osv/SUSE-SU-2026:24226-1.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "unbound": "1.26.1-160000.1.1",
                "libunbound8": "1.26.1-160000.1.1",
                "unbound-devel": "1.26.1-160000.1.1",
                "unbound-anchor": "1.26.1-160000.1.1",
                "python3-unbound": "1.26.1-160000.1.1"
              }
            ]
          }
        }
      ],
      "modified": "2026-10-21T17:23:11.050283658Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-77860",
        "CVE-2026-77955",
        "CVE-2026-78227",
        "CVE-2026-80225",
        "CVE-2026-81634",
        "CVE-2026-81642",
        "CVE-2026-82717",
        "CVE-2026-82720",
        "CVE-2026-85501"
      ],
      "references": [
        "https://www.suse.com/support/update/announcement/2026/suse-su-202624226-1/",
        "https://bugzilla.suse.com/1280403",
        "https://bugzilla.suse.com/1280404",
        "https://bugzilla.suse.com/1280405",
        "https://bugzilla.suse.com/1280406",
        "https://bugzilla.suse.com/1280409",
        "https://bugzilla.suse.com/1280411",
        "https://bugzilla.suse.com/1280412",
        "https://bugzilla.suse.com/1280413",
        "https://bugzilla.suse.com/1280414",
        "https://www.suse.com/security/cve/CVE-2026-77860",
        "https://www.suse.com/security/cve/CVE-2026-77955",
        "https://www.suse.com/security/cve/CVE-2026-78227",
        "https://www.suse.com/security/cve/CVE-2026-80225",
        "https://www.suse.com/security/cve/CVE-2026-81634",
        "https://www.suse.com/security/cve/CVE-2026-81642",
        "https://www.suse.com/security/cve/CVE-2026-82717",
        "https://www.suse.com/security/cve/CVE-2026-82720",
        "https://www.suse.com/security/cve/CVE-2026-85501"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-77860",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-77955",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-78227",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-80225",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-81634",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-81642",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-82717",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-82720",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-85501",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 397560,
  "published_at": "2026-10-09T15:11:19+00:00"
}