SUSE alert SUSE-SU-2026:22319-1 (dnsdist)

From:
             
 
SLE-SECURITY-UPDATES <null@suse.de>
To:
             
 
sle-security-updates@lists.suse.com
Subject:
             
 
SUSE-SU-2026:22319-1: moderate: Security update for dnsdist
Date:
             
 
Wed, 01 Jul 2026 16:41:55 -0000
Message-ID:
             
 
<178292411572.5373.3562531635734042987@bea6e15a6baf>
# Security update for dnsdist

Announcement ID: SUSE-SU-2026:22319-1  
Release Date: 2026-06-22T14:30:36Z  
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 ):  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-2026-0396 ( 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 ( NVD ):  3.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N
  * CVE-2026-0396 ( NVD ):  4.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/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-2026-0397 ( 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 ( NVD ):  4.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
  * CVE-2026-0397 ( NVD ):  3.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
  * 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-2026-24028 ( 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 ( NVD ):  5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
  * CVE-2026-24028 ( NVD ):  8.2 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
  * 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-2026-24029 ( 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 ( NVD ):  6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
  * CVE-2026-24029 ( NVD ):  6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
  * 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-2026-24030 ( 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 ( NVD ):  5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
  * CVE-2026-24030 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/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-2026-27853 ( 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 ( NVD ):  5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-27853 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * 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-2026-27854 ( 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 ( NVD ):  4.8 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L
  * CVE-2026-27854 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-33254 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-33254 ( NVD ):  5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
  * 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-2026-33257 ( NVD ):  5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
  * CVE-2026-33257 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * 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
  * CVE-2026-33260 ( NVD ):  5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
  * CVE-2026-33260 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-33593 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-33594 ( NVD ):  5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
  * CVE-2026-33594 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-33595 ( NVD ):  5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
  * CVE-2026-33595 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-33596 ( NVD ):  6.5 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-33596 ( NVD ):  3.1 CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
  * CVE-2026-33597 ( NVD ):  3.7 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
  * CVE-2026-33597 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-33598 ( NVD ):  4.8 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L
  * CVE-2026-33598 ( NVD ):  9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
  * CVE-2026-33599 ( NVD ):  3.1 CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
  * CVE-2026-33599 ( NVD ):  8.1 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
  * CVE-2026-33602 ( NVD ):  6.5 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H
  * CVE-2026-33602 ( NVD ):  8.2 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H

  
Affected Products:

  * SUSE Linux Enterprise Server 16.0
  * SUSE Linux Enterprise Server for SAP applications 16.0

  
  
An update that solves 18 vulnerabilities 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 SUSE update use the SUSE recommended installation methods like
YaST online_update or "zypper patch".  
Alternatively you can run the command listed for your product:

  * SUSE Linux Enterprise Server 16.0  
    zypper in -t patch SUSE-SLES-16.0-1027=1

  * SUSE Linux Enterprise Server for SAP applications 16.0  
    zypper in -t patch SUSE-SLES-16.0-1027=1

## Package List:

  * SUSE Linux Enterprise Server 16.0 (aarch64 ppc64le s390x x86_64)
    * dnsdist-1.9.13-160000.1.1
    * dnsdist-debugsource-1.9.13-160000.1.1
    * dnsdist-debuginfo-1.9.13-160000.1.1
  * SUSE Linux Enterprise Server for SAP applications 16.0 (ppc64le x86_64)
    * dnsdist-1.9.13-160000.1.1
    * dnsdist-debugsource-1.9.13-160000.1.1
    * dnsdist-debuginfo-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
  * https://bugzilla.suse.com/show_bug.cgi?id=1261236
  * https://bugzilla.suse.com/show_bug.cgi?id=1261237
  * https://bugzilla.suse.com/show_bug.cgi?id=1261238
  * https://bugzilla.suse.com/show_bug.cgi?id=1261239
  * https://bugzilla.suse.com/show_bug.cgi?id=1261240
  * https://bugzilla.suse.com/show_bug.cgi?id=1261241
  * https://bugzilla.suse.com/show_bug.cgi?id=1261243
  * https://bugzilla.suse.com/show_bug.cgi?id=1262536
  * https://bugzilla.suse.com/show_bug.cgi?id=1262537
  * https://bugzilla.suse.com/show_bug.cgi?id=1262538
  * https://bugzilla.suse.com/show_bug.cgi?id=1262539
  * https://bugzilla.suse.com/show_bug.cgi?id=1262540
  * https://bugzilla.suse.com/show_bug.cgi?id=1262541
  * https://bugzilla.suse.com/show_bug.cgi?id=1262542
  * https://bugzilla.suse.com/show_bug.cgi?id=1262543
  * https://bugzilla.suse.com/show_bug.cgi?id=1262544
  * https://bugzilla.suse.com/show_bug.cgi?id=1262545
  * https://bugzilla.suse.com/show_bug.cgi?id=1262546



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