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If an attacker-controlled authoritative server can produce a negative answer that is exactly 65536 bytes, then a flaw in `named` results in a negative cache entry of 0 bytes. When this entry is subsequently read, `named` aborts. This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.27-S1.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade bind9.16-utilsUpgrade bind9.16-licenseUpgrade bind9.16Upgrade bind-pkcs11-utilsUpgrade bind9.18-libsUpgrade bind-sdb-chrootUpgrade bindUpgrade bind-libsUpgrade bind-sdbUpgrade bind-pkcs11Upgrade bind9.18-utilsUpgrade bind9.16-chrootUpgrade bind9.18-chrootUpgrade python3-bind9.16Upgrade bind-export-develUpgrade bind9.16-dnssec-utilsUpgrade bind9.18-develUpgrade bind-develUpgrade bind9.18Upgrade bind-licenseUpgrade bind-libs-liteUpgrade bind9.16-develUpgrade bind-docUpgrade bind9.18-docUpgrade bind9.16-libsUpgrade bind-dnssec-docUpgrade python3-bindUpgrade bind-pkcs11-develUpgrade bind9.16-docUpgrade bind-export-libsUpgrade bind-utilsUpgrade bind-pkcs11-libsUpgrade bind9.18-dnssec-utilsUpgrade bind-dnssec-utilsUpgrade bind-chrootUpgrade bind-lite-devel | Oct 11, 2026 | Oct 5, 2026 |
| Alpine Linux | — | Upgrade bind | Sep 28, 2026 | Sep 16, 2026 |
| Amazon_linux_2023 | — | Upgrade bind-utils-debuginfoUpgrade bind-docUpgrade bind-develUpgrade bind-debuginfoUpgrade bind-utilsUpgrade bind-chrootUpgrade bind-debugsourceUpgrade bindUpgrade bind-licenseUpgrade bind-libs-debuginfoUpgrade bind-dnssec-utils-debuginfoUpgrade bind-libsUpgrade bind-dnssec-utils | Sep 30, 2026 | Sep 16, 2026 |
| Debian | — | Upgrade bind9 | Sep 21, 2026 | Sep 16, 2026 |
| Freebsd | — | Upgrade bind920 | Oct 5, 2026 | Oct 4, 2026 |
| Oracle_linux | — | Upgrade bind-pkcs11Upgrade bind9.16Upgrade bind9.18Upgrade bindUpgrade bind-export-develUpgrade bind9.16-utilsUpgrade python3-bindUpgrade bind9.18-libsUpgrade bind-libsUpgrade bind9.16-dnssec-utilsUpgrade bind9.18-utilsUpgrade bind-pkcs11-develUpgrade bind-licenseUpgrade bind-docUpgrade bind9.16-chrootUpgrade bind9.16-licenseUpgrade python3-bind9.16Upgrade bind-lite-develUpgrade bind9.16-develUpgrade bind9.18-docUpgrade bind9.16-docUpgrade bind-sdbUpgrade bind-export-libsUpgrade bind9.18-develUpgrade bind-sdb-chrootUpgrade bind-dnssec-docUpgrade bind9.18-chrootUpgrade bind-libs-liteUpgrade bind-chrootUpgrade bind-develUpgrade bind9.18-dnssec-utilsUpgrade bind-pkcs11-libsUpgrade bind9.16-libsUpgrade bind-utilsUpgrade bind-pkcs11-utilsUpgrade bind-dnssec-utils | Oct 22, 2026 | Sep 16, 2026 |
| Redhat_linux | — | Upgrade bind-pkcs11Upgrade bind-debugsourceUpgrade bind-libsUpgrade bind-utilsUpgrade bind-dnssec-docUpgrade bind9.16-utils-debuginfoUpgrade bind9.18-dnssec-utilsUpgrade bind-pkcs11-libs-debuginfoUpgrade bind-pkcs11-libsUpgrade bind-libs-liteUpgrade bind-pkcs11-debuginfoUpgrade bind-chrootUpgrade bind-utils-debuginfoUpgrade bind-debuginfoUpgrade bind9.18-dnssec-utils-debuginfoUpgrade bind-lite-develUpgrade bind9.18-debuginfoUpgrade bind-libs-lite-debuginfoUpgrade bind9.16-debugsourceUpgrade bind9.16-dnssec-utils-debuginfoUpgrade python3-bind9.16Upgrade bind-pkcs11-utils-debuginfoUpgrade bind-docUpgrade bindUpgrade bind9.18-chrootUpgrade bind9.16-develUpgrade bind9.18-utils-debuginfoUpgrade bind9.18-docUpgrade bind-sdbUpgrade bind-export-libsUpgrade bind9.18-utilsUpgrade bind9.16-libs-debuginfoUpgrade bind-dnssec-utilsUpgrade bind9.18Upgrade python3-bindUpgrade bind9.16-dnssec-utilsUpgrade bind-libs-debuginfoUpgrade bind-pkcs11-develUpgrade bind9.16-utilsUpgrade bind9.16-libsUpgrade bind-pkcs11-utilsUpgrade bind9.16-chrootUpgrade bind-sdb-debuginfoUpgrade bind-develNo solution existsUpgrade bind9.16-licenseUpgrade bind9.16-docUpgrade bind-sdb-chrootUpgrade bind-dnssec-utils-debuginfoUpgrade bind9.16Upgrade bind-export-develUpgrade bind9.18-debugsourceUpgrade bind9.16-debuginfoUpgrade bind-export-libs-debuginfoUpgrade bind9.18-develUpgrade bind9.18-libsUpgrade bind9.18-libs-debuginfoUpgrade bind-license | Sep 18, 2026 | Sep 16, 2026 |
| Rocky_linux | — | Upgrade bind-lite-develUpgrade bind-sdbUpgrade bind9.18-debuginfoUpgrade bind-debuginfoUpgrade bind9.18-dnssec-utils-debuginfoUpgrade bind-export-libs-debuginfoUpgrade bind-libs-liteUpgrade bind-chrootUpgrade bind9.16-develUpgrade bind-pkcs11-libsUpgrade bind-pkcs11-libs-debuginfoUpgrade bind-pkcs11-utilsUpgrade bind9.18-chrootUpgrade bind9.16-dnssec-utils-debuginfoUpgrade bind9.16Upgrade bind-libs-lite-debuginfoUpgrade bind9.18-debugsourceUpgrade bind-libsUpgrade bind-utils-debuginfoUpgrade bind9.16-debugsourceUpgrade bind9.18-dnssec-utilsUpgrade bind9.16-libs-debuginfoUpgrade bind-utilsUpgrade bind9.18-utils-debuginfoUpgrade bind-pkcs11-utils-debuginfoUpgrade bind-pkcs11-debuginfoUpgrade bind-libs-debuginfoUpgrade bind9.18Upgrade bind-pkcs11-develUpgrade bindUpgrade bind-develUpgrade bind9.18-utilsUpgrade bind9.16-dnssec-utilsUpgrade bind9.16-debuginfoUpgrade bind-dnssec-utils-debuginfoUpgrade bind9.18-develUpgrade bind9.16-utilsUpgrade bind-sdb-debuginfoUpgrade bind9.16-utils-debuginfoUpgrade bind-dnssec-utilsUpgrade bind9.18-libsUpgrade bind9.18-libs-debuginfoUpgrade bind9.16-libsUpgrade bind-sdb-chrootUpgrade bind-export-libsUpgrade bind-pkcs11Upgrade bind-export-develUpgrade bind-debugsourceUpgrade bind9.16-chroot | Oct 7, 2026 | Oct 6, 2026 |
| Ubuntu | — | Upgrade bind9Upgrade bind9 (Ubuntu Pro) | Oct 15, 2026 | Oct 14, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Sep 28, 2026 | Sep 16, 2026 |
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