SUSE-SU-2026:2673-1: important: Security update for bind

[SLE-UPDATES]

# Security update for bind

Announcement ID: SUSE-SU-2026:2673-1  
Release Date: 2026-06-29T09:32:13Z  
Rating: important  
References:

  * bsc#1263494
  * bsc#1265591
  * bsc#1265592
  * bsc#1265594
  * bsc#1265595
  * bsc#1265596

  
Cross-References:

  * CVE-2026-3039
  * CVE-2026-3592
  * CVE-2026-5946
  * CVE-2026-5947
  * CVE-2026-5950

  
CVSS scores:

  * CVE-2026-3039 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-3039 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-3592 ( SUSE ):  5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
  * CVE-2026-3592 ( NVD ):  5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
  * CVE-2026-5946 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-5946 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-5947 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-5947 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-5947 ( NVD ):  5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-5950 ( SUSE ):  5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
  * CVE-2026-5950 ( NVD ):  5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

  
Affected Products:

  * Basesystem Module 15-SP7
  * Server Applications 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 five vulnerabilities and has one security fix can now be
installed.

## Description:

This update for bind fixes the following issues:

Security issues:

  * CVE-2026-3039: BIND 9 server memory exhaustion during GSS-API TKEY
    negotiation (bsc#1265591).
  * CVE-2026-3592: Amplification vulnerabilities via self-pointed glue records
    (bsc#1265592).
  * CVE-2026-5946: Invalid handling of CLASS != IN (bsc#1265594).
  * CVE-2026-5947: SIG(0) validation during query flood may lead to undefined
    behavior (bsc#1265595).
  * CVE-2026-5950: Unbounded resend loop in BIND 9 resolver (bsc#1265596).

Non security issue:

  * bind test failed with version 9.20.21 (bsc#1263494).
  * Upgrade to release 9.20.23

## 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-SP7-2026-2673=1

  * Server Applications Module 15-SP7  
    zypper in -t patch SUSE-SLE-Module-Server-Applications-15-SP7-2026-2673=1

## Package List:

  * Basesystem Module 15-SP7 (aarch64 ppc64le s390x x86_64)
    * bind-utils-debuginfo-9.20.23-150700.3.25.1
    * bind-utils-9.20.23-150700.3.25.1
    * bind-debugsource-9.20.23-150700.3.25.1
    * bind-debuginfo-9.20.23-150700.3.25.1
  * Server Applications Module 15-SP7 (aarch64 ppc64le s390x x86_64)
    * bind-debugsource-9.20.23-150700.3.25.1
    * bind-9.20.23-150700.3.25.1
    * bind-debuginfo-9.20.23-150700.3.25.1
  * Server Applications Module 15-SP7 (noarch)
    * bind-doc-9.20.23-150700.3.25.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-3039.html
  * https://www.suse.com/security/cve/CVE-2026-3592.html
  * https://www.suse.com/security/cve/CVE-2026-5946.html
  * https://www.suse.com/security/cve/CVE-2026-5947.html
  * https://www.suse.com/security/cve/CVE-2026-5950.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1263494
  * https://bugzilla.suse.com/show_bug.cgi?id=1265591
  * https://bugzilla.suse.com/show_bug.cgi?id=1265592
  * https://bugzilla.suse.com/show_bug.cgi?id=1265594
  * https://bugzilla.suse.com/show_bug.cgi?id=1265595
  * https://bugzilla.suse.com/show_bug.cgi?id=1265596

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