SUSE-SU-2026:1351-1: important: Security update for bind

Wed Apr 15 20:33:43 UTC 2026

# Security update for bind

Announcement ID: SUSE-SU-2026:1351-1  
Release Date: 2026-04-15T13:36:44Z  
Rating: important  
References:

  * bsc#1259202
  * bsc#1260567
  * bsc#1260568
  * bsc#1260569
  * bsc#1260805

Cross-References:

  * CVE-2026-1519
  * CVE-2026-3104
  * CVE-2026-3119
  * CVE-2026-3591

CVSS scores:

  * CVE-2026-1519 ( 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-2026-1519 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-1519 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-3104 ( 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-2026-3104 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-3104 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-3119 ( SUSE ):  7.1
    CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-3119 ( SUSE ):  6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-3119 ( NVD ):  6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-3591 ( SUSE ):  5.3
    CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
  * CVE-2026-3591 ( SUSE ):  5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
  * CVE-2026-3591 ( NVD ):  5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

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 four vulnerabilities and has one security fix can now be
installed.

## Description:

This update for bind fixes the following issues:

Security issues:

  * CVE-2026-1519: maliciously crafted DNSSEC-validated zone can lead to denial
    of service (bsc#1260805).
  * CVE-2026-3104: memory leak in code preparing DNSSEC proofs of non-existence
    allows for DoS (bsc#1260567).
  * CVE-2026-3119: authenticated queries containing a TKEY record may cause
    `named` to terminate unexpectedly (bsc#1260568).
  * CVE-2026-3591: stack use-after-return flaw in SIG(0) handling code allows
    for ACL bypass (bsc#1260569).
  * use-after-free error in `dns_client_resolve()` triggered by a DNAME response
    (bsc#1259202).

Upgrade to release 9.20.21 Security Fixes: * Fix unbounded NSEC3 iterations when
validating referrals to unsigned delegations. (CVE-2026-1519) [bsc#1260805] *
Fix memory leaks in code preparing DNSSEC proofs of non-existence.
(CVE-2026-3104) [bsc#1260567] * Prevent a crash in code processing queries
containing a TKEY record. (CVE-2026-3119) [bsc#1260568] * Fix a stack use-after-
return flaw in SIG(0) handling code. (CVE-2026-3591) [bsc#1260569] * Fix a use-
after-free error in dns_client_resolve() triggered by a DNAME response. This
issue only affected the delv tool and it has now been fixed. [bsc#1259202]
Feature Changes: * Record query time for all dnstap responses. * Optimize TCP
source port selection on Linux. Bug Fixes: * Fix the handling of key statements
defined inside views. * Fix an assertion failure triggered by non-minimal IXFRs.
* Fix a crash when retrying a NOTIFY over TCP. * Fetch loop detection
improvements. * Randomize nameserver selection. * Fix dnstap logging of
forwarded queries. * A stale answer could have been served in case of multiple
upstream failures when following CNAME chains. This has been fixed. * Fail
DNSKEY validation when supported but invalid DS is found. * Importing an invalid
SKR file might corrupt stack memory. * Return FORMERR for queries with the EDNS
Client Subnet FAMILY field set to 0. * Fix inbound IXFR performance regression.
* Make catalog zone names and member zones' entry names case-insensitive. * Fix
implementation of BRID and HHIT record types. * Fix implementation of DSYNC
record type. * Fix response policy and catalog zones to work with $INCLUDE
directive.

## 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-SP7-2026-1351=1

  * Server Applications Module 15-SP7  
    zypper in -t patch SUSE-SLE-Module-Server-Applications-15-SP7-2026-1351=1

## Package List:

  * Basesystem Module 15-SP7 (aarch64 ppc64le s390x x86_64)
    * bind-debuginfo-9.20.21-150700.3.18.1
    * bind-utils-9.20.21-150700.3.18.1
    * bind-utils-debuginfo-9.20.21-150700.3.18.1
    * bind-debugsource-9.20.21-150700.3.18.1
  * Server Applications Module 15-SP7 (aarch64 ppc64le s390x x86_64)
    * bind-9.20.21-150700.3.18.1
    * bind-debugsource-9.20.21-150700.3.18.1
    * bind-debuginfo-9.20.21-150700.3.18.1
  * Server Applications Module 15-SP7 (noarch)
    * bind-doc-9.20.21-150700.3.18.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-1519.html
  * https://www.suse.com/security/cve/CVE-2026-3104.html
  * https://www.suse.com/security/cve/CVE-2026-3119.html
  * https://www.suse.com/security/cve/CVE-2026-3591.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1259202
  * https://bugzilla.suse.com/show_bug.cgi?id=1260567
  * https://bugzilla.suse.com/show_bug.cgi?id=1260568
  * https://bugzilla.suse.com/show_bug.cgi?id=1260569
  * https://bugzilla.suse.com/show_bug.cgi?id=1260805

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