SUSE-SU-2025:01743-1: important: Security update for dnsdist

[SLE-SECURITY-UPDATES]

# Security update for dnsdist

Announcement ID: SUSE-SU-2025:01743-1  
Release Date: 2025-05-29T11:44:30Z  
Rating: important  
References:

  * bsc#1242028
  * bsc#1243378

  
Cross-References:

  * CVE-2025-30193
  * CVE-2025-30194

  
CVSS scores:

  * CVE-2025-30193 ( SUSE ):  8.7
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2025-30193 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2025-30193 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2025-30194 ( SUSE ):  8.7
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2025-30194 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2025-30194 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

  
Affected Products:

  * Basesystem Module 15-SP7
  * SUSE Linux Enterprise Desktop 15 SP7
  * SUSE Linux Enterprise Real Time 15 SP7
  * SUSE Linux Enterprise Server 15 SP7
  * SUSE Linux Enterprise Server for SAP Applications 15 SP7

  
  
An update that solves two vulnerabilities can now be installed.

## Description:

This update for dnsdist fixes the following issues:

Update to version 1.9.10.

  * CVE-2025-30194: illegal memory access (double-free) when processing
    specially crafted DoH exchanges leads to a denial-of-service (bsc#1242028).
  * CVE-2025-30193: stack exhaustion when processing too many queries on
    incoming TCP connections leads to a denial-of-service (bsc#1243378).

## 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:

  * Basesystem Module 15-SP7  
    zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP7-2025-1743=1

## Package List:

  * Basesystem Module 15-SP7 (aarch64 ppc64le s390x x86_64)
    * dnsdist-debuginfo-1.9.10-150700.3.3.1
    * dnsdist-debugsource-1.9.10-150700.3.3.1
    * dnsdist-1.9.10-150700.3.3.1

## References:

  * https://www.suse.com/security/cve/CVE-2025-30193.html
  * https://www.suse.com/security/cve/CVE-2025-30194.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1242028
  * https://bugzilla.suse.com/show_bug.cgi?id=1243378

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