{"id":"SUSE-SU-2026:3426-1","summary":"Security update for bind","details":"This update for bind fixes the following issues:\n\nUpgrade to release 9.20.26.\n\nSecurity issues fixed:\n\n- CVE-2026-10723: incorrect acceptance of NSEC3 records (bsc#1271982).\n- CVE-2026-10822: key record using PRIVATEDNS algorithm may lead to unexpected exit (bsc#1271983).\n- CVE-2026-11331: potential wildcard CNAME RPZ policy bypass (bsc#1271984).\n- CVE-2026-11605: unnecessary validation of DNSSEC signed records (bsc#1271985).\n- CVE-2026-11622: potential memory usage beyond configured limits (bsc#1271986).\n- CVE-2026-11721: cache poisoning possible with label count discrepancy, RRSIG, and wildcards (bsc#1271987).\n- CVE-2026-12617: record ordering based unexpected exit with CNAME or DNAME (bsc#1271988).\n- CVE-2026-13204: unexpected exit in certain situations with NSEC and NSEC3 both present (bsc#1271989).\n- CVE-2026-13321: DNSSEC validation bypass via out-of-zone NSEC Next field (bsc#1271990).\n\nOther updates and bugfixes:\n\n- Release 9.20.26:\n  * Reclaim memory promptly when DNSSEC validations are canceled.\n  * Removed Features:\n    * Remove the secondary validator in query.c.\n    * Remove ineffective TCP fallback after repeated UDP timeouts.\n  * Feature Changes:\n    * Fall back to TCP on receipt of a UDP response with a mismatched\n      query ID.\n    * Limit the number of glue records cached from a referral.\n    * Fix a resolver stall on a CNAME response to a DS query.\n  * Bug Fixes:\n    * Fix a bug in DNS UPDATE processing with inline-signing enabled.\n    * Properly detect private records before copying.\n    * Tighten referral DS acceptance.\n    * Don't synthesize negative responses with pending NSEC.\n    * Check that an NSEC signer is at or above the name to be\n      validated.\n    * Don't evict DNSSEC-validated cache data on a CD=1 NXDOMAIN.\n    * Fix a deny-answer-aliases configuration bypass issue.\n    * Reject external referrals from forwarders.\n    * Fix a zone transfer over TLS (XoT) issue when using the\n      opportunistic TLS mode.\n    * Unvalidated opt-out NSEC3 could be accepted in insecurity\n      proof.\n    * Check wildcard signer and NOQNAME signer match.\n    * Fix CNAME resolution failure caused by a cached SERVFAIL\n      response.\n    * Reject unsupported RSA DNSKEY shapes during DNSSEC validation.\n    * Fix a bug in GeoIP2 string matching.\n    * Fix DNS-over-HTTPS (DoH) quota configuration issue.\n    * Truncated reply to a TSIG query no longer stalls the resolver.\n    * Ignore updates removing DNSKEY RRset with class ANY.\n    * Ignore 0-byte reads in the TCP read callback.\n    * Only print per-zone glue stats when zone-statistics is set to\n      full.\n    * CDS/CDNSKEY records were not removed when re-configuring the\n      server.\n    * Fix a crash when querying an empty non-terminal in a wildcard\n      zone in RBTDB.\n    * Stop reusing outgoing TCP connections the peer has already\n      closed.\n    * Fix DNSSEC validation failures for names under an apex DNAME.\n      * The resolver now removes other RRsets at the same name when\n        caching a CNAME.\n    * Fix nxdomain-redirect combined with dns64.\n    * Fix DNS64 owner case after DNAME restart.\n    * Clear REDIRECT flag when it isn't needed.\n    * Disable output escaping in bind9.xsl.\n    * Fix crash on badly configured secondary signer.\n    * Fix a possible crash on concurrent TKEY DELETE for the same\n      key.\n    * Reject RRSIG records covering meta-types.\n","modified":"2026-07-31T09:15:07.882845988Z","published":"2026-07-30T11:12:12Z","related":["CVE-2026-10723","CVE-2026-10822","CVE-2026-11331","CVE-2026-11605","CVE-2026-11622","CVE-2026-11721","CVE-2026-12617","CVE-2026-13204","CVE-2026-13321"],"upstream":["CVE-2026-10723","CVE-2026-10822","CVE-2026-11331","CVE-2026-11605","CVE-2026-11622","CVE-2026-11721","CVE-2026-12617","CVE-2026-13204","CVE-2026-13321"],"references":[{"type":"ADVISORY","url":"https://www.suse.com/support/update/announcement/2026/suse-su-20263426-1/"},{"type":"REPORT","url":"https://bugzilla.suse.com/1271982"},{"type":"REPORT","url":"https://bugzilla.suse.com/1271983"},{"type":"REPORT","url":"https://bugzilla.suse.com/1271984"},{"type":"REPORT","url":"https://bugzilla.suse.com/1271985"},{"type":"REPORT","url":"https://bugzilla.suse.com/1271986"},{"type":"REPORT","url":"https://bugzilla.suse.com/1271987"},{"type":"REPORT","url":"https://bugzilla.suse.com/1271988"},{"type":"REPORT","url":"https://bugzilla.suse.com/1271989"},{"type":"REPORT","url":"https://bugzilla.suse.com/1271990"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-10723"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-10822"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-11331"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-11605"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-11622"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-11721"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-12617"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-13204"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-13321"}],"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":"9.20.26-150700.3.29.1"}]}],"ecosystem_specific":{"binaries":[{"bind-utils":"9.20.26-150700.3.29.1"}]},"database_specific":{"source":"https://ftp.suse.com/pub/projects/security/osv/SUSE-SU-2026:3426-1.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":"9.20.26-150700.3.29.1"}]}],"ecosystem_specific":{"binaries":[{"bind":"9.20.26-150700.3.29.1","bind-doc":"9.20.26-150700.3.29.1"}]},"database_specific":{"source":"https://ftp.suse.com/pub/projects/security/osv/SUSE-SU-2026:3426-1.json"}}],"schema_version":"1.7.5"}