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SUSE-SU-2026:1351-1

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

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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.

Fix available

Published
Updated

Stack: system

Affected products and versions

  • bind SUSE:Linux Enterprise Module for Basesystem 15 SP7

    Affected ranges
    • ECOSYSTEM: < 9.20.21-150700.3.18.1

    Update to 9.20.21-150700.3.18.1

  • bind SUSE:Linux Enterprise Module for Server Applications 15 SP7

    Affected ranges
    • ECOSYSTEM: < 9.20.21-150700.3.18.1

    Update to 9.20.21-150700.3.18.1

Original sources

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