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An attacker who knows (or guesses) that a resolver uses RPZ with wildcard CNAME policies can craft query names long enough to trigger a NAMETOOLONG error condition during RPZ processing. This is not handled correctly and may lead to defeating the RPZ rule. It also may lead to an unexpected exit of the BIND 9 software. This issue affects BIND 9 versions 9.16.0 through 9.18.50, 9.20.0 through 9.20.24, 9.21.0 through 9.21.23, 9.16.8-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.24-S1.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade python3-bind9.16Upgrade bind9.16-utilsUpgrade bind9.18-develUpgrade bind9.16-dnssec-utilsUpgrade bind9.18Upgrade bind-licenseUpgrade bind9.18-utilsUpgrade bind9.16-licenseUpgrade bind9.18-libsUpgrade bindUpgrade bind9.16-chrootUpgrade bind-libsUpgrade bind9.16Upgrade bind-dnssec-utilsUpgrade bind9.18-dnssec-utilsUpgrade bind-utilsUpgrade bind9.18-chrootUpgrade bind-chrootUpgrade bind-dnssec-docUpgrade bind-docUpgrade python3-bindUpgrade bind-develUpgrade bind9.18-docUpgrade bind9.16-docUpgrade bind9.16-develUpgrade bind9.16-libs | Oct 11, 2026 | Aug 13, 2026 |
| Alpine Linux | — | Upgrade bind | Jul 28, 2026 | Jul 22, 2026 |
| Amazon_linux_2023 | — | Upgrade bind-dnssec-utilsUpgrade bind-debuginfoUpgrade bind-docUpgrade bind-utilsUpgrade bind-develUpgrade bind-utils-debuginfoUpgrade bind-chrootUpgrade bind-dnssec-utils-debuginfoUpgrade bind-debugsourceUpgrade bind-libsUpgrade bindUpgrade bind-libs-debuginfoUpgrade bind-license | Aug 10, 2026 | Jul 22, 2026 |
| Debian | — | Upgrade bind9 | Jul 28, 2026 | Jul 28, 2026 |
| F5 Big Ip | — | Update F5 BIG-IP to the latest version | Sep 9, 2026 | Sep 8, 2026 |
| Ibm Aix | — | Apply the fix or workaround for bind_advisory31 | Sep 16, 2026 | Sep 16, 2026 |
| Oracle_linux | — | Upgrade bind9.18-utilsUpgrade bind9.18-dnssec-utilsUpgrade bind-licenseUpgrade bind9.16-licenseUpgrade bind9.18Upgrade bindUpgrade bind-utilsUpgrade bind9.18-develUpgrade bind-dnssec-docUpgrade bind9.16-docUpgrade bind9.16-libsUpgrade bind-dnssec-utilsUpgrade bind9.18-libsUpgrade bind-develUpgrade python3-bindUpgrade bind9.18-chrootUpgrade bind9.18-docUpgrade bind9.16-dnssec-utilsUpgrade python3-bind9.16Upgrade bind9.16-chrootUpgrade bind-docUpgrade bind9.16Upgrade bind-chrootUpgrade bind9.16-develUpgrade bind-libsUpgrade bind9.16-utils | Oct 22, 2026 | Jul 22, 2026 |
| Redhat Openshift | — | Upgrade ose-rhel-coreos | Sep 3, 2026 | Jul 22, 2026 |
| Redhat_linux | — | Upgrade bind9.18-dnssec-utilsUpgrade bind9.18-chrootUpgrade bindUpgrade bind-utilsUpgrade bind9.18-libsUpgrade python3-bind9.16Upgrade bind-docUpgrade bind9.16-utilsUpgrade bind9.16-docUpgrade bind9.18-libs-debuginfoUpgrade bind-debugsourceUpgrade bind-licenseUpgrade bind-dnssec-utilsUpgrade bind9.18Upgrade bind9.16-libsUpgrade bind-utils-debuginfoUpgrade bind-dnssec-utils-debuginfoUpgrade bind9.16-utils-debuginfoUpgrade bind9.18-debuginfoUpgrade bind9.18-utils-debuginfoUpgrade bind9.18-docUpgrade bind-libsUpgrade python3-bindUpgrade bind9.16-chrootUpgrade bind9.18-dnssec-utils-debuginfoUpgrade bind-libs-debuginfoUpgrade bind9.16-dnssec-utilsUpgrade bind9.16-licenseUpgrade bind-develUpgrade bind9.16-libs-debuginfoUpgrade bind-dnssec-docUpgrade bind9.16-develUpgrade bind9.18-debugsourceUpgrade bind9.18-develUpgrade bind-chrootUpgrade bind9.16-debuginfoUpgrade bind9.16-debugsourceUpgrade bind-debuginfoUpgrade bind9.18-utilsUpgrade bind9.16-dnssec-utils-debuginfoUpgrade bind9.16 | Jul 24, 2026 | Jul 22, 2026 |
| Rocky_linux | — | Upgrade bind9.18-debugsourceUpgrade bind9.16-dnssec-utils-debuginfoUpgrade bind9.16-debugsourceUpgrade bind9.18-utils-debuginfoUpgrade bind-develUpgrade bind9.18-debuginfoUpgrade bind-dnssec-utils-debuginfoUpgrade bind9.18-utilsUpgrade bind9.16-debuginfoUpgrade bind9.16-libsUpgrade bind9.18-libs-debuginfoUpgrade bind-libsUpgrade bindUpgrade bind9.18Upgrade bind-debugsourceUpgrade bind9.16-utils-debuginfoUpgrade bind-libs-debuginfoUpgrade bind9.18-develUpgrade bind9.16-chrootUpgrade bind9.16-dnssec-utilsUpgrade bind9.16-utilsUpgrade bind-dnssec-utilsUpgrade bind9.18-libsUpgrade bind-chrootUpgrade bind9.18-dnssec-utils-debuginfoUpgrade bind-utils-debuginfoUpgrade bind-debuginfoUpgrade bind-utilsUpgrade bind9.18-chrootUpgrade bind9.16Upgrade bind9.16-libs-debuginfoUpgrade bind9.18-dnssec-utilsUpgrade bind9.16-devel | Aug 17, 2026 | Aug 14, 2026 |
| Ubuntu | — | Upgrade bind9Upgrade bind9 (Ubuntu Pro) | Aug 19, 2026 | Aug 19, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Aug 17, 2026 | Jul 22, 2026 |
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