Multiple flaws have been identified in `named` related to the handling of DNS messages whose CLASS is not Internet (`IN`) — for example, `CHAOS` or `HESIOD`, or DNS messages that specify meta-classes (`ANY` or `NONE`) in the question section. Specially crafted requests reaching the affected code paths — recursion, dynamic updates (`UPDATE`), zone change notifications (`NOTIFY`), or processing of `IN`-specific record types in non-`IN` data — can cause assertion failures in `named`. This issue affects BIND 9 versions 9.11.0 through 9.16.50, 9.18.0 through 9.18.48, 9.20.0 through 9.20.22, 9.21.0 through 9.21.21, 9.11.3-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.48-S1, and 9.20.9-S1 through 9.20.22-S1.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade bind-docUpgrade bind9.18-dnssec-utilsUpgrade bind-lite-develUpgrade bind9.16Upgrade bind-libsUpgrade bind-chrootUpgrade bind9.16-develUpgrade bind-pkcs11-libsUpgrade bind-utilsUpgrade bind9.18-chrootUpgrade bind-dnssec-docUpgrade bind-sdbUpgrade bind9.18-docUpgrade bind-libs-liteUpgrade python3-bind9.16Upgrade bind9.16-chrootUpgrade bind-pkcs11Upgrade bind-pkcs11-develUpgrade bind9.16-libsUpgrade bind-pkcs11-utilsUpgrade python3-bindUpgrade bind9.16-utilsUpgrade bind9.16-docUpgrade bind-export-libsUpgrade bind-licenseUpgrade bindUpgrade bind9.18-libsUpgrade bind9.16-dnssec-utilsUpgrade bind-export-develUpgrade bind9.18-utilsUpgrade bind-sdb-chrootUpgrade bind9.16-licenseUpgrade bind-dnssec-utilsUpgrade bind9.18-develUpgrade bind-develUpgrade bind9.18 | Jun 7, 2026 | Jun 4, 2026 |
| Alpine Linux | — | Upgrade bind | May 25, 2026 | May 20, 2026 |
| Amazon Linux Ami 2 | — | Upgrade bind-pkcs11Upgrade bind-licenseUpgrade bind-sdbUpgrade bind-sdb-chrootUpgrade bind-debuginfoUpgrade bindUpgrade bind-pkcs11-utilsUpgrade bind-pkcs11-develUpgrade bind-export-libsUpgrade bind-export-develUpgrade bind-pkcs11-libsUpgrade bind-libs-liteUpgrade bind-develUpgrade bind-utilsUpgrade bind-lite-develUpgrade bind-libsUpgrade bind-chroot | Jun 9, 2026 | Jun 9, 2026 |
| Amazon_linux_2023 | — | Upgrade bind-docUpgrade bind-chrootUpgrade bind-develUpgrade bind-debuginfoUpgrade bind-utilsUpgrade bind-dnssec-utils-debuginfoUpgrade bind-utils-debuginfoUpgrade bind-debugsourceUpgrade bindUpgrade bind-licenseUpgrade bind-libsUpgrade bind-libs-debuginfoUpgrade bind-dnssec-utils | May 28, 2026 | May 20, 2026 |
| Debian | — | Upgrade bind9 | May 24, 2026 | May 24, 2026 |
| Ibm Aix | — | Apply the fix or workaround for bind_advisory30 | Jun 29, 2026 | Jun 29, 2026 |
| Oracle_linux | — | Upgrade python3-bind9.16Upgrade bind9.16-licenseUpgrade bind9.16-chrootUpgrade bind-export-develUpgrade bind-pkcs11-develUpgrade bind-pkcs11Upgrade bind9.16Upgrade bind9.16-utilsUpgrade bind9.16-dnssec-utilsUpgrade bind-licenseUpgrade bind-sdb-chrootUpgrade bind-libsUpgrade bindUpgrade bind-chrootUpgrade bind-sdbUpgrade bind-develUpgrade python3-bindUpgrade bind-pkcs11-libsUpgrade bind-pkcs11-utilsUpgrade bind-export-libsUpgrade bind-libs-liteUpgrade bind9.16-docUpgrade bind-utilsUpgrade bind9.16-libsUpgrade bind9.16-develUpgrade bind-lite-devel | Jun 8, 2026 | May 20, 2026 |
| Redhat Openshift | — | Upgrade ose-rhel-coreos | Sep 11, 2026 | May 21, 2026 |
| Redhat_linux | — | Upgrade bind-develUpgrade bind9.18-docUpgrade bind9.16-develUpgrade bind-libs-liteUpgrade bind-debuginfoUpgrade bind-sdbUpgrade bind-pkcs11-utilsUpgrade bind9.16-libsNo solution existsUpgrade bind9.18-chrootUpgrade bind9.18-debugsourceUpgrade bind-dnssec-utilsUpgrade bind-chrootUpgrade bind9.16-dnssec-utils-debuginfoUpgrade bind9.18-dnssec-utils-debuginfoUpgrade bind-utilsUpgrade bind-pkcs11-libsUpgrade python3-bindUpgrade bind-libs-lite-debuginfoUpgrade bind-export-libsUpgrade bind-dnssec-docUpgrade bind9.16-docUpgrade bind9.18-dnssec-utilsUpgrade bind9.16-debugsourceUpgrade bind-sdb-chrootUpgrade bind9.18-debuginfoUpgrade bind9.18-utils-debuginfoUpgrade bind9.18-develUpgrade bind-pkcs11-debuginfoUpgrade bind-lite-develUpgrade bind-sdb-debuginfoUpgrade bind9.16-dnssec-utilsUpgrade bind-licenseUpgrade python3-bind9.16Upgrade bind-pkcs11-utils-debuginfoUpgrade bind-pkcs11Upgrade bind9.16-libs-debuginfoUpgrade bind9.18-libs-debuginfoUpgrade bind-libsUpgrade bind9.16Upgrade bind-docUpgrade bind-debugsourceUpgrade bind9.16-chrootUpgrade bind-libs-debuginfoUpgrade bind9.18-libsUpgrade bind9.16-utils-debuginfoUpgrade bind-dnssec-utils-debuginfoUpgrade bind9.16-utilsUpgrade bind9.18Upgrade bind-utils-debuginfoUpgrade bindUpgrade bind-pkcs11-develUpgrade bind-export-develUpgrade bind9.16-debuginfoUpgrade bind9.18-utilsUpgrade bind-export-libs-debuginfoUpgrade bind-pkcs11-libs-debuginfoUpgrade bind9.16-license | Jun 8, 2026 | May 21, 2026 |
| Rocky_linux | — | Upgrade bind9.18-libs-debuginfoUpgrade bind9.16-debuginfoUpgrade bind-export-libs-debuginfoUpgrade bind-dnssec-utils-debuginfoUpgrade bind9.16-dnssec-utils-debuginfoUpgrade bind9.16-dnssec-utilsUpgrade bind9.18-utilsUpgrade bind9.18-libsUpgrade bind9.18-debugsourceUpgrade bind9.16Upgrade bind9.16-chrootUpgrade bind9.18-dnssec-utils-debuginfoUpgrade bind-libs-lite-debuginfoUpgrade bind-export-develUpgrade bind-libs-liteUpgrade bind-utilsUpgrade bind9.16-libsUpgrade bind-lite-develUpgrade bind-pkcs11-debuginfoUpgrade bind-libs-debuginfoUpgrade bind9.18-develUpgrade bind9.18-debuginfoUpgrade bindUpgrade bind-sdb-chrootUpgrade bind-pkcs11-utils-debuginfoUpgrade bind-debugsourceUpgrade bind-export-libsUpgrade bind-chrootUpgrade bind-dnssec-utilsUpgrade bind9.18Upgrade bind-utils-debuginfoUpgrade bind-pkcs11-utilsUpgrade bind-sdbUpgrade bind9.18-dnssec-utilsUpgrade bind-sdb-debuginfoUpgrade bind9.18-chrootUpgrade bind-pkcs11-develUpgrade bind-pkcs11Upgrade bind9.16-debugsourceUpgrade bind9.18-utils-debuginfoUpgrade bind9.16-utilsUpgrade bind-pkcs11-libsUpgrade bind-pkcs11-libs-debuginfoUpgrade bind9.16-develUpgrade bind-debuginfoUpgrade bind9.16-utils-debuginfoUpgrade bind-develUpgrade bind-libsUpgrade bind9.16-libs-debuginfo | Jun 8, 2026 | Jun 6, 2026 |
| Ubuntu | — | Upgrade bind9Upgrade bind9 (Ubuntu Pro) | May 25, 2026 | May 21, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jun 17, 2026 | May 20, 2026 |
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