{"id":"SUSE-SU-2026:1351-1","summary":"Security update for bind","details":"This update for bind fixes the following issues:\n\nSecurity issues:\n\n- CVE-2026-1519: maliciously crafted DNSSEC-validated zone can lead to denial of service (bsc#1260805).\n- CVE-2026-3104: memory leak in code preparing DNSSEC proofs of non-existence allows for DoS (bsc#1260567).\n- CVE-2026-3119: authenticated queries containing a TKEY record may cause `named` to terminate unexpectedly\n  (bsc#1260568).\n- CVE-2026-3591: stack use-after-return flaw in SIG(0) handling code allows for ACL bypass (bsc#1260569).\n- use-after-free error in `dns_client_resolve()` triggered by a DNAME response (bsc#1259202).\n\nUpgrade to release 9.20.21\n Security Fixes:\n * Fix unbounded NSEC3 iterations when validating referrals to\n unsigned delegations.\n (CVE-2026-1519)\n [bsc#1260805]\n * Fix memory leaks in code preparing DNSSEC proofs of\n non-existence.\n (CVE-2026-3104)\n [bsc#1260567]\n * Prevent a crash in code processing queries containing a TKEY\n record.\n (CVE-2026-3119)\n [bsc#1260568]\n * Fix a stack use-after-return flaw in SIG(0) handling code.\n (CVE-2026-3591)\n [bsc#1260569]\n * Fix a use-after-free error in dns_client_resolve() triggered by\n a DNAME response. This issue only affected the delv tool and it\n has now been fixed.\n [bsc#1259202]\n Feature Changes:\n * Record query time for all dnstap responses.\n * Optimize TCP source port selection on Linux.\n Bug Fixes:\n * Fix the handling of key statements defined inside views.\n * Fix an assertion failure triggered by non-minimal IXFRs.\n * Fix a crash when retrying a NOTIFY over TCP.\n * Fetch loop detection improvements.\n * Randomize nameserver selection.\n * Fix dnstap logging of forwarded queries.\n * A stale answer could have been served in case of multiple\n upstream failures when following CNAME chains. This has been\n fixed.\n * Fail DNSKEY validation when supported but invalid DS is found.\n * Importing an invalid SKR file might corrupt stack memory.\n * Return FORMERR for queries with the EDNS Client Subnet FAMILY\n field set to 0.\n * Fix inbound IXFR performance regression.\n * Make catalog zone names and member zones' entry names\n case-insensitive.\n * Fix implementation of BRID and HHIT record types.\n * Fix implementation of DSYNC record type.\n * Fix response policy and catalog zones to work with $INCLUDE\n directive.\n","modified":"2026-04-16T08:31:25.414870Z","published":"2026-04-15T13:36:44Z","related":["CVE-2026-1519","CVE-2026-3104","CVE-2026-3119","CVE-2026-3591"],"upstream":["CVE-2026-1519","CVE-2026-3104","CVE-2026-3119","CVE-2026-3591"],"references":[{"type":"ADVISORY","url":"https://www.suse.com/support/update/announcement/2026/suse-su-20261351-1/"},{"type":"REPORT","url":"https://bugzilla.suse.com/1259202"},{"type":"REPORT","url":"https://bugzilla.suse.com/1260567"},{"type":"REPORT","url":"https://bugzilla.suse.com/1260568"},{"type":"REPORT","url":"https://bugzilla.suse.com/1260569"},{"type":"REPORT","url":"https://bugzilla.suse.com/1260805"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-1519"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-3104"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-3119"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-3591"}],"affected":[{"package":{"name":"bind","ecosystem":"SUSE:Linux Enterprise Module for Basesystem 15 SP7","purl":"pkg:rpm/suse/bind&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP7"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"9.20.21-150700.3.18.1"}]}],"ecosystem_specific":{"binaries":[{"bind-utils":"9.20.21-150700.3.18.1"}]},"database_specific":{"source":"https://ftp.suse.com/pub/projects/security/osv/SUSE-SU-2026:1351-1.json"}},{"package":{"name":"bind","ecosystem":"SUSE:Linux Enterprise Module for Server Applications 15 SP7","purl":"pkg:rpm/suse/bind&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP7"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"9.20.21-150700.3.18.1"}]}],"ecosystem_specific":{"binaries":[{"bind":"9.20.21-150700.3.18.1","bind-doc":"9.20.21-150700.3.18.1"}]},"database_specific":{"source":"https://ftp.suse.com/pub/projects/security/osv/SUSE-SU-2026:1351-1.json"}}],"schema_version":"1.7.5"}