SUSE alert openSUSE-SU-2026:21083-1 (unbound)

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openSUSE-SU-2026:21083-1: important: Security update for unbound
Date:
             
 
Tue, 30 Jun 2026 09:48:16 +0200
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<20260630074816.79743FF7F@maintenance.suse.de>
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Article
openSUSE security update: security update for unbound
-------------------------------------------------------------

Announcement ID: openSUSE-SU-2026:21083-1
Rating: important
References:

  * bsc#1265578
  * bsc#1265580
  * bsc#1265581
  * bsc#1265582
  * bsc#1265583
  * bsc#1265584
  * bsc#1265585
  * bsc#1265586
  * bsc#1265587
  * bsc#1265588
  * bsc#1265589



Cross-References:

  * CVE-2026-32792
  * CVE-2026-33278
  * CVE-2026-40622
  * CVE-2026-41292
  * CVE-2026-42534
  * CVE-2026-42923
  * CVE-2026-42944
  * CVE-2026-42959
  * CVE-2026-42960
  * CVE-2026-44390
  * CVE-2026-44608



CVSS scores:

  * CVE-2026-32792 ( SUSE ): 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-33278 ( SUSE ): 8.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
  * CVE-2026-40622 ( SUSE ): 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
  * CVE-2026-41292 ( SUSE ): 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-42534 ( SUSE ): 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-42923 ( SUSE ): 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-42944 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
  * CVE-2026-42959 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-42960 ( SUSE ): 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
  * CVE-2026-44390 ( SUSE ): 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-44608 ( SUSE ): 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Products:

         openSUSE Leap 16.0

-------------------------------------------------------------

An update that solves 11 vulnerabilities and has 11 bug fixes can now be installed.

Description:

This update for unbound fixes the following issues

- CVE-2026-32792: Packet of death with DNSCrypt (bsc#1265583).
- CVE-2026-33278: Possible remote code execution during DNSSEC validation (bsc#1265587).
- CVE-2026-40622: "Ghost domain name" variant (bsc#1265581).
- CVE-2026-41292: Parsing a long list of incoming EDNS options degrades performance (bsc#1265580).
- CVE-2026-42534: Jostle logic bypass degrades resolution performance (bsc#1265585).
- CVE-2026-42923: Degradation of service with unbounded NSEC3 hash calculations (bsc#1265589).
- CVE-2026-42944: Heap overflow and crash with multiple nsid, cookie, padding EDNS options
(bsc#1265578).
- CVE-2026-42959: Crash during DNSSEC validation of malicious content (bsc#1265586).
- CVE-2026-42960: Possible cache poisoning attack while following delegation (bsc#1265588).
- CVE-2026-44390: Unbounded name compression in certain cases causes degradation of service
(bsc#1265584).
- CVE-2026-44608: Use after free and crash in RPZ code (bsc#1265582).


Patch instructions:

   To install this openSUSE security update use the suse recommended installation methods
   like YaST online_update or "zypper patch".
   Alternatively you can run the command listed for your product:

- openSUSE Leap 16.0

   zypper in -t patch openSUSE-Leap-16.0-948=1

Package List:

- openSUSE Leap 16.0:

  libunbound8-1.24.1-160000.2.1
  python3-unbound-1.24.1-160000.2.1
  unbound-1.24.1-160000.2.1
  unbound-anchor-1.24.1-160000.2.1
  unbound-devel-1.24.1-160000.2.1
  unbound-munin-1.24.1-160000.2.1

References:

  * https://www.suse.com/security/cve/CVE-2026-32792.html
  * https://www.suse.com/security/cve/CVE-2026-33278.html
  * https://www.suse.com/security/cve/CVE-2026-40622.html
  * https://www.suse.com/security/cve/CVE-2026-41292.html
  * https://www.suse.com/security/cve/CVE-2026-42534.html
  * https://www.suse.com/security/cve/CVE-2026-42923.html
  * https://www.suse.com/security/cve/CVE-2026-42944.html
  * https://www.suse.com/security/cve/CVE-2026-42959.html
  * https://www.suse.com/security/cve/CVE-2026-42960.html
  * https://www.suse.com/security/cve/CVE-2026-44390.html
  * https://www.suse.com/security/cve/CVE-2026-44608.html