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 bind-libs-liteUpgrade bind9.16-docUpgrade bind-dnssec-utilsUpgrade bind9.16-libsUpgrade bind9.16-develUpgrade bind-utilsUpgrade bind-chrootUpgrade python3-bindUpgrade bind-pkcs11-develUpgrade bind-docUpgrade bind-dnssec-docUpgrade bind-lite-develUpgrade bind-export-libsUpgrade bind-pkcs11-libsUpgrade bind9.16-licenseUpgrade bind-pkcs11-utilsUpgrade bind-licenseUpgrade bind9.16-dnssec-utilsUpgrade bind-export-develUpgrade bind-pkcs11Upgrade bind9.16-utilsUpgrade bind-sdbUpgrade bind-sdb-chrootUpgrade bind9.16-chrootUpgrade bind-libsUpgrade bindUpgrade bind-develUpgrade python3-bind9.16Upgrade bind9.16 | Oct 11, 2026 | Oct 5, 2026 |
| Alpine Linux | — | Upgrade bind | Sep 28, 2026 | Sep 16, 2026 |
| Amazon_linux_2023 | — | Upgrade bind-libs-debuginfoUpgrade bind-licenseUpgrade bindUpgrade bind-dnssec-utils-debuginfoUpgrade bind-debugsourceUpgrade bind-dnssec-utilsUpgrade bind-libsUpgrade bind-debuginfoUpgrade bind-develUpgrade bind-chrootUpgrade bind-utils-debuginfoUpgrade bind-utilsUpgrade bind-doc | Sep 30, 2026 | Sep 16, 2026 |
| Debian | — | Upgrade bind9 | Sep 21, 2026 | Sep 16, 2026 |
| Freebsd | — | Upgrade bind920 | Oct 5, 2026 | Oct 4, 2026 |
| Redhat_linux | — | Upgrade bind9.18-dnssec-utilsUpgrade bind-dnssec-docUpgrade bind9.18-dnssec-utils-debuginfoUpgrade bind-utilsUpgrade bind-debugsourceUpgrade bind-libsUpgrade bind9.18-docUpgrade bind9.18-utils-debuginfoUpgrade bindUpgrade bind-chrootUpgrade bind-docUpgrade bind9.18-chrootUpgrade bind9.18-debuginfoUpgrade bind-utils-debuginfoUpgrade bind-debuginfoUpgrade bind9.18-utilsUpgrade python3-bindUpgrade bind-dnssec-utilsUpgrade bind-dnssec-utils-debuginfoUpgrade bind-libs-debuginfoUpgrade bind9.18-debugsourceUpgrade bind9.18Upgrade bind9.18-develUpgrade bind9.18-libsUpgrade bind-licenseNo solution existsUpgrade bind-develUpgrade bind9.18-libs-debuginfo | Sep 18, 2026 | Sep 16, 2026 |
| Rocky_linux | — | Upgrade bind-chrootUpgrade bind9.18-debugsourceUpgrade bind-utils-debuginfoUpgrade bind-libsUpgrade bind9.18-dnssec-utils-debuginfoUpgrade bind9.18-dnssec-utilsUpgrade bind9.18-utils-debuginfoUpgrade bind-utilsUpgrade bind-debuginfoUpgrade bind9.18-debuginfoUpgrade bind9.18-chrootUpgrade bind-develUpgrade bind9.18-utilsUpgrade bind9.18Upgrade bind-libs-debuginfoUpgrade bind9.18-develUpgrade bind-dnssec-utils-debuginfoUpgrade bind-dnssec-utilsUpgrade bind9.18-libsUpgrade bind-debugsourceUpgrade bind9.18-libs-debuginfoUpgrade bind | Oct 7, 2026 | Oct 6, 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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