SUSE alert openSUSE-SU-2026:21015-1 (dnsdist)

From:
             
 
null@suse.de
To:
             
 
security-announce@lists.opensuse.org
Subject:
             
 
openSUSE-SU-2026:21015-1: moderate: Security update for dnsdist
Date:
             
 
Tue, 30 Jun 2026 09:47:55 +0200
Message-ID:
             
 
<20260630074755.EE624FF4B@maintenance.suse.de>
Archive-link:
             
 
Article
openSUSE security update: security update for dnsdist
-------------------------------------------------------------

Announcement ID: openSUSE-SU-2026:21015-1
Rating: moderate
References:

  * bsc#1261236
  * bsc#1261237
  * bsc#1261238
  * bsc#1261239
  * bsc#1261240
  * bsc#1261241
  * bsc#1261243
  * bsc#1262536
  * bsc#1262537
  * bsc#1262538
  * bsc#1262539
  * bsc#1262540
  * bsc#1262541
  * bsc#1262542
  * bsc#1262543
  * bsc#1262544
  * bsc#1262545
  * bsc#1262546



Cross-References:

  * CVE-2026-0396
  * CVE-2026-0397
  * CVE-2026-24028
  * CVE-2026-24029
  * CVE-2026-24030
  * CVE-2026-27853
  * CVE-2026-27854
  * CVE-2026-33254
  * CVE-2026-33257
  * CVE-2026-33260
  * CVE-2026-33593
  * CVE-2026-33594
  * CVE-2026-33595
  * CVE-2026-33596
  * CVE-2026-33597
  * CVE-2026-33598
  * CVE-2026-33599
  * CVE-2026-33602



CVSS scores:

  * CVE-2026-0396 ( SUSE ): 3.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N
  * CVE-2026-0396 ( SUSE ): 2.1 CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
  * CVE-2026-0397 ( SUSE ): 3.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
  * CVE-2026-0397 ( SUSE ): 2.1 CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
  * CVE-2026-24028 ( SUSE ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
  * CVE-2026-24028 ( SUSE ): 6.3 CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
  * CVE-2026-24029 ( SUSE ): 4.8 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
  * CVE-2026-24029 ( SUSE ): 6.3 CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
  * CVE-2026-24030 ( SUSE ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
  * CVE-2026-24030 ( SUSE ): 6.3 CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
  * CVE-2026-27853 ( SUSE ): 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-27853 ( SUSE ): 8.2 CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-27854 ( SUSE ): 4.8 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L
  * CVE-2026-27854 ( SUSE ): 6.3 CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N
  * CVE-2026-33257 ( SUSE ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
  * CVE-2026-33260 ( SUSE ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Affected Products:

         openSUSE Leap 16.0

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

An update that solves 18 vulnerabilities and has 18 bug fixes can now be installed.

Description:

This update for dnsdist fixes the following issues

- CVE-2026-0396: crafted DNS queries can allow to inject HTML content (bsc#1261236).
- CVE-2026-0397: CORS misconfiguration can lead to information disclosure (bsc#1261237).
- CVE-2026-24028: crafted DNS response packet can lead to an out-of-bounds read (bsc#1261238).
- CVE-2026-24029: HTTPS ACL bypass can allow clients to send DoH queries (bsc#1261239).
- CVE-2026-24030: allocating too much memory while processing DNS can result in a denial of service
(bsc#1261240).
- CVE-2026-27853: crafted DNS responses can lead to an out-of-bounds write (bsc#1261241).
- CVE-2026-27854: crafted DNS queries can be used to trigger a use-after-free (bsc#1261243).
- CVE-2026-33254: Resource exhaustion via DoQ/DoH3 connections (bsc#1262538).
- CVE-2026-33257: Insufficient input validation of internal webserver (bsc#1262536).
- CVE-2026-33260: Insufficient input validation of internal webserver (bsc#1262537).
- CVE-2026-33593: Denial of service via crafted DNSCrypt query (bsc#1262546).
- CVE-2026-33594: Outgoing DoH excessive memory allocation (bsc#1262545).
- CVE-2026-33595: DoQ/DoH3 excessive memory allocation (bsc#1262544).
- CVE-2026-33596: TCP backend stream ID overflow (bsc#1262543).
- CVE-2026-33597: PRSD detection denial of service (bsc#1262542).
- CVE-2026-33598: Out-of-bounds read in cache inspection via Lua (bsc#1262541).
- CVE-2026-33599: Out-of-bounds read in service discovery (bsc#1262540).
- CVE-2026-33602: Off-by-one access when processing crafted UDP responses (bsc#1262539).

Changes for dnsdist:

- Updated to 1.9.13


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-16.0-1027=1

Package List:

- openSUSE Leap 16.0:

  dnsdist-1.9.13-160000.1.1

References:

  * https://www.suse.com/security/cve/CVE-2026-0396.html
  * https://www.suse.com/security/cve/CVE-2026-0397.html
  * https://www.suse.com/security/cve/CVE-2026-24028.html
  * https://www.suse.com/security/cve/CVE-2026-24029.html
  * https://www.suse.com/security/cve/CVE-2026-24030.html
  * https://www.suse.com/security/cve/CVE-2026-27853.html
  * https://www.suse.com/security/cve/CVE-2026-27854.html
  * https://www.suse.com/security/cve/CVE-2026-33254.html
  * https://www.suse.com/security/cve/CVE-2026-33257.html
  * https://www.suse.com/security/cve/CVE-2026-33260.html
  * https://www.suse.com/security/cve/CVE-2026-33593.html
  * https://www.suse.com/security/cve/CVE-2026-33594.html
  * https://www.suse.com/security/cve/CVE-2026-33595.html
  * https://www.suse.com/security/cve/CVE-2026-33596.html
  * https://www.suse.com/security/cve/CVE-2026-33597.html
  * https://www.suse.com/security/cve/CVE-2026-33598.html
  * https://www.suse.com/security/cve/CVE-2026-33599.html
  * https://www.suse.com/security/cve/CVE-2026-33602.html