Security update for bind

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