SUSE-SU-2026:3484-1: important: Security update for bind

SLE-UPDATES null at suse.de
Tue Aug 4 16:38:39 UTC 2026 

# Security update for bind

Announcement ID: SUSE-SU-2026:3484-1  
Release Date: 2026-08-04T11:52:47Z  
Rating: important  
References:

  * bsc#1271986
  * bsc#1271987
  * bsc#1271989
  * bsc#1271990

  
Cross-References:

  * CVE-2026-11622
  * CVE-2026-11721
  * CVE-2026-13204
  * CVE-2026-13321

  
CVSS scores:

  * CVE-2026-11622 ( 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-2026-11622 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-11622 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-11721 ( SUSE ):  8.7
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
  * CVE-2026-11721 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
  * CVE-2026-11721 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
  * CVE-2026-13204 ( 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-2026-13204 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-13204 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-13321 ( SUSE ):  9.2
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N
  * CVE-2026-13321 ( SUSE ):  8.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
  * CVE-2026-13321 ( NVD ):  8.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N

  
Affected Products:

  * SUSE Linux Enterprise High Performance Computing 12 SP5
  * SUSE Linux Enterprise Server 12 SP5
  * SUSE Linux Enterprise Server 12 SP5 LTSS
  * SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security
  * SUSE Linux Enterprise Server for SAP Applications 12 SP5

  
  
An update that solves four vulnerabilities can now be installed.

## Description:

This update for bind fixes the following issues

  * CVE-2026-11622: Potential memory usage beyond configured limits
    (bsc#1271986).
  * CVE-2026-11721: Cache poisoning possible with label count discrepancy,
    RRSIG, and wildcards (bsc#1271987).
  * CVE-2026-13204: Unexpected exit in certain situations with NSEC and NSEC3
    both present (bsc#1271989).
  * CVE-2026-13321: DNSSEC Validation Bypass via Out-of-Zone NSEC Next Field
    (bsc#1271990).

## 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 12 SP5 LTSS Extended Security  
    zypper in -t patch SUSE-SLE-SERVER-12-SP5-LTSS-EXTENDED-SECURITY-2026-3484=1

  * SUSE Linux Enterprise Server 12 SP5 LTSS  
    zypper in -t patch SUSE-SLE-SERVER-12-SP5-LTSS-2026-3484=1

## Package List:

  * SUSE Linux Enterprise Server 12 SP5 LTSS (aarch64 ppc64le s390x x86_64)
    * bind-devel-9.11.22-3.74.1
    * libisc1107-debuginfo-9.11.22-3.74.1
    * libisccc161-9.11.22-3.74.1
    * bind-utils-9.11.22-3.74.1
    * libdns1110-9.11.22-3.74.1
    * libbind9-161-9.11.22-3.74.1
    * liblwres161-9.11.22-3.74.1
    * libisccfg163-9.11.22-3.74.1
    * bind-debuginfo-9.11.22-3.74.1
    * libisccfg163-debuginfo-9.11.22-3.74.1
    * libisc1107-9.11.22-3.74.1
    * libbind9-161-debuginfo-9.11.22-3.74.1
    * bind-9.11.22-3.74.1
    * bind-chrootenv-9.11.22-3.74.1
    * libisccc161-debuginfo-9.11.22-3.74.1
    * libirs161-debuginfo-9.11.22-3.74.1
    * libirs161-9.11.22-3.74.1
    * liblwres161-debuginfo-9.11.22-3.74.1
    * libdns1110-debuginfo-9.11.22-3.74.1
    * bind-debugsource-9.11.22-3.74.1
    * bind-utils-debuginfo-9.11.22-3.74.1
  * SUSE Linux Enterprise Server 12 SP5 LTSS (noarch)
    * python-bind-9.11.22-3.74.1
    * bind-doc-9.11.22-3.74.1
  * SUSE Linux Enterprise Server 12 SP5 LTSS (s390x x86_64)
    * libisc1107-32bit-9.11.22-3.74.1
    * libisc1107-debuginfo-32bit-9.11.22-3.74.1
  * SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security (x86_64)
    * bind-devel-9.11.22-3.74.1
    * libisc1107-debuginfo-9.11.22-3.74.1
    * libisccc161-9.11.22-3.74.1
    * bind-utils-9.11.22-3.74.1
    * libisc1107-32bit-9.11.22-3.74.1
    * libdns1110-9.11.22-3.74.1
    * libbind9-161-9.11.22-3.74.1
    * liblwres161-9.11.22-3.74.1
    * libisccfg163-9.11.22-3.74.1
    * bind-debuginfo-9.11.22-3.74.1
    * libisccfg163-debuginfo-9.11.22-3.74.1
    * libisc1107-9.11.22-3.74.1
    * libbind9-161-debuginfo-9.11.22-3.74.1
    * bind-9.11.22-3.74.1
    * bind-chrootenv-9.11.22-3.74.1
    * libisc1107-debuginfo-32bit-9.11.22-3.74.1
    * libisccc161-debuginfo-9.11.22-3.74.1
    * libirs161-9.11.22-3.74.1
    * libirs161-debuginfo-9.11.22-3.74.1
    * liblwres161-debuginfo-9.11.22-3.74.1
    * libdns1110-debuginfo-9.11.22-3.74.1
    * bind-debugsource-9.11.22-3.74.1
    * bind-utils-debuginfo-9.11.22-3.74.1
  * SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security (noarch)
    * python-bind-9.11.22-3.74.1
    * bind-doc-9.11.22-3.74.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-11622.html
  * https://www.suse.com/security/cve/CVE-2026-11721.html
  * https://www.suse.com/security/cve/CVE-2026-13204.html
  * https://www.suse.com/security/cve/CVE-2026-13321.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1271986
  * https://bugzilla.suse.com/show_bug.cgi?id=1271987
  * https://bugzilla.suse.com/show_bug.cgi?id=1271989
  * https://bugzilla.suse.com/show_bug.cgi?id=1271990

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