ESB-2026.3746 — Vulnetix

ESB-2026.3746 PUBLISHED CVSS 7.5 HIGH

=========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2026.3746 Security update for bind 16 April 2026 =========================================================================== AUSCERT Security Bulletin Summary --------------------------------- Product: bind Publisher: SUSE Operating System: SUSE Resolution: Patch/Upgrade CVE Names: CVE-2026-1519 CVE-2026-3104 CVE-2026-3119 CVE-2026-3591 Original Bulletin: https://www.suse.com/support/update/announcement/2026/suse-su-20261351-1 Comment: CVSS (Max): 7.5 CVE-2026-3104 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H) CVSS Source: SUSE Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H EPSS (Max): 0.1% (20th) CVE-2026-1519 2026-04-15 - --------------------------BEGIN INCLUDED TEXT-------------------- Security update for bind Announcement ID: SUSE-SU-2026:1351-1 Release Date: 2026-04-15T13:36:44Z Rating: important o bsc#1259202 o bsc#1260567 References: o bsc#1260568 o bsc#1260569 o bsc#1260805 o CVE-2026-1519 o CVE-2026-3104 Cross-References: o CVE-2026-3119 o CVE-2026-3591 o 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 o 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 o 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 o 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 o 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 o 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 CVSS scores: o 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 o 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 o 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 o 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 o 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 o 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 o Basesystem Module 15-SP7 o Server Applications Module 15-SP7 Affected o SUSE Linux Enterprise Desktop 15 SP7 Products: o SUSE Linux Enterprise Real Time 15 SP7 o SUSE Linux Enterprise Server 15 SP7 o 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: o CVE-2026-1519: maliciously crafted DNSSEC-validated zone can lead to denial of service (bsc#1260805). o CVE-2026-3104: memory leak in code preparing DNSSEC proofs of non-existence allows for DoS (bsc#1260567). o CVE-2026-3119: authenticated queries containing a TKEY record may cause named to terminate unexpectedly (bsc#1260568). o CVE-2026-3591: stack use-after-return flaw in SIG(0) handling code allows for ACL bypass (bsc#1260569). o 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: o Basesystem Module 15-SP7 zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP7-2026-1351=1 o Server Applications Module 15-SP7 zypper in -t patch SUSE-SLE-Module-Server-Applications-15-SP7-2026-1351=1 Package List: o 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 o 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 o Server Applications Module 15-SP7 (noarch) bind-doc-9.20.21-150700.3.18.1 References: o https://www.suse.com/security/cve/CVE-2026-1519.html o https://www.suse.com/security/cve/CVE-2026-3104.html o https://www.suse.com/security/cve/CVE-2026-3119.html o https://www.suse.com/security/cve/CVE-2026-3591.html o https://bugzilla.suse.com/show_bug.cgi?id=1259202 o https://bugzilla.suse.com/show_bug.cgi?id=1260567 o https://bugzilla.suse.com/show_bug.cgi?id=1260568 o https://bugzilla.suse.com/show_bug.cgi?id=1260569 o https://bugzilla.suse.com/show_bug.cgi?id=1260805 - --------------------------END INCLUDED TEXT---------------------- You have received this e-mail bulletin as a result of your organisation's registration with AUSCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AUSCERT's members. As AUSCERT did not write the document quoted above, AUSCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AUSCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: https://portal.auscert.org.au/bulletins/ =========================================================================== AUSCERT The University of Queensland, Brisbane QLD 4072 Australia e: auscert@auscert.org.au t: +61 (0)7 3365 4417 Allies in Cyber Security ===========================================================================

Risk Scores

CVSS v3.1

7.5

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Products

Vendor	Product	Versions
SUSE	bind

Timeline

Apr 16, 2026 CVE Published

References

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