SUSE-SU-2026:20085-1: important: Security update for bind

Tue Jan 20 16:30:38 UTC 2026

# Security update for bind

Announcement ID: SUSE-SU-2026:20085-1  
Release Date: 2026-01-15T10:43:49Z  
Rating: important  
References:

  * bsc#1230649
  * bsc#1252378
  * bsc#1252379
  * bsc#1252380

Cross-References:

  * CVE-2025-40778
  * CVE-2025-40780
  * CVE-2025-8677

CVSS scores:

  * CVE-2025-40778 ( 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-2025-40778 ( SUSE ):  8.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
  * CVE-2025-40778 ( NVD ):  8.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
  * CVE-2025-40780 ( 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-2025-40780 ( SUSE ):  8.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
  * CVE-2025-40780 ( NVD ):  8.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
  * CVE-2025-8677 ( 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-2025-8677 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2025-8677 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Products:

  * SUSE Linux Enterprise Server 16.0
  * SUSE Linux Enterprise Server for SAP Applications 16.0

An update that solves three vulnerabilities and has one fix can now be
installed.

## Description:

This update for bind fixes the following issues:

  * Upgrade to release 9.20.15 Security Fixes:
  * CVE-2025-40778: Fixed cache poisoning attacks with unsolicited RRs
    (bsc#1252379)
  * CVE-2025-40780: Fixed cache poisoning due to weak PRNG (bsc#1252380)
  * CVE-2025-8677: Fixed resource exhaustion via malformed DNSKEY handling
    (bsc#1252378)

New Features: * Add dnssec-policy keys configuration check to named-checkconf. *
Add a new option `manual-mode` to dnssec-policy. * Add a new option `servfail-
until-ready` to response-policy zones. * Support for parsing HHIT and BRID
records has been added. * Support for parsing DSYNC records has been added.

Removed Features: * Deprecate the `tkey-gssapi-credential` statement. * Obsolete
the `tkey-domain` statement.

Feature Changes: * Add deprecation warnings for RSASHA1, RSASHA1-NSEC3SHA1, and
DS digest type 1.

Bug Fixes: * Missing DNSSEC information when CD bit is set in query. * rndc sign
during ZSK rollover will now replace signatures. * Use signer name when
disabling DNSSEC algorithms. * Preserve cache when reload fails and reload the
server again. * Prevent spurious SERVFAILs for certain 0-TTL resource records. *
Fix unexpected termination if catalog-zones had undefined `default-primaries`. *
Stale RRsets in a CNAME chain were not always refreshed. * Add RPZ extended DNS
error for zones with a CNAME override policy configured. * Fix dig +keepopen
option. * Log dropped or slipped responses in the query-errors category. * Fix
synth-from-dnssec not working in some scenarios. * Clean enough memory when
adding new ADB names/entries under memory pressure. * Prevent spurious
validation failures. * Ensure file descriptors 0-2 are in use before using libuv
[bsc#1230649]

## 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 16.0  
    zypper in -t patch SUSE-SLES-16.0-144=1

  * SUSE Linux Enterprise Server for SAP Applications 16.0  
    zypper in -t patch SUSE-SLES-16.0-144=1

## Package List:

  * SUSE Linux Enterprise Server 16.0 (aarch64 ppc64le s390x x86_64)
    * bind-modules-perl-debuginfo-9.20.15-160000.1.1
    * bind-modules-sqlite3-9.20.15-160000.1.1
    * bind-utils-9.20.15-160000.1.1
    * bind-modules-mysql-debuginfo-9.20.15-160000.1.1
    * bind-modules-generic-9.20.15-160000.1.1
    * bind-9.20.15-160000.1.1
    * bind-debugsource-9.20.15-160000.1.1
    * bind-modules-mysql-9.20.15-160000.1.1
    * bind-modules-generic-debuginfo-9.20.15-160000.1.1
    * bind-utils-debuginfo-9.20.15-160000.1.1
    * bind-modules-ldap-debuginfo-9.20.15-160000.1.1
    * bind-modules-perl-9.20.15-160000.1.1
    * bind-debuginfo-9.20.15-160000.1.1
    * bind-modules-ldap-9.20.15-160000.1.1
    * bind-modules-sqlite3-debuginfo-9.20.15-160000.1.1
  * SUSE Linux Enterprise Server 16.0 (noarch)
    * bind-doc-9.20.15-160000.1.1
  * SUSE Linux Enterprise Server for SAP Applications 16.0 (ppc64le x86_64)
    * bind-modules-perl-debuginfo-9.20.15-160000.1.1
    * bind-modules-sqlite3-9.20.15-160000.1.1
    * bind-utils-9.20.15-160000.1.1
    * bind-modules-mysql-debuginfo-9.20.15-160000.1.1
    * bind-modules-generic-9.20.15-160000.1.1
    * bind-9.20.15-160000.1.1
    * bind-debugsource-9.20.15-160000.1.1
    * bind-modules-mysql-9.20.15-160000.1.1
    * bind-modules-generic-debuginfo-9.20.15-160000.1.1
    * bind-utils-debuginfo-9.20.15-160000.1.1
    * bind-modules-ldap-debuginfo-9.20.15-160000.1.1
    * bind-modules-perl-9.20.15-160000.1.1
    * bind-debuginfo-9.20.15-160000.1.1
    * bind-modules-ldap-9.20.15-160000.1.1
    * bind-modules-sqlite3-debuginfo-9.20.15-160000.1.1
  * SUSE Linux Enterprise Server for SAP Applications 16.0 (noarch)
    * bind-doc-9.20.15-160000.1.1

## References:

  * https://www.suse.com/security/cve/CVE-2025-40778.html
  * https://www.suse.com/security/cve/CVE-2025-40780.html
  * https://www.suse.com/security/cve/CVE-2025-8677.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1230649
  * https://bugzilla.suse.com/show_bug.cgi?id=1252378
  * https://bugzilla.suse.com/show_bug.cgi?id=1252379
  * https://bugzilla.suse.com/show_bug.cgi?id=1252380

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