# CVE-2026-10822: Key Record using PRIVATEDNS algorithm may lead to unexpected exit CVE-2026-10822 is fixed in 23 products on 1 platform, first by bind9 1:9.20.24-1ubuntu0.2, released July 22, 2026. It is not reported as exploited. Patch Radar priority: Routine. - Web page: https://patchblox.com/security/cve/CVE-2026-10822 - Priority: Routine - CVSS: 6.5 (Moderate) - EPSS: 0.0042 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Jul 22, 2026 - Weakness: Reachable Assertion - Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-10822 ## Description If BIND encounters a particular invalid data structure in a DNS record, it will accept the invalid data, and may subsequently abort and exit. BIND will first need to store a DNS record for a key (KEY, DNSKEY, etc.). That key must specify a PRIVATEDNS algorithm (253), and in the algorithm identifier, improperly give a length longer than the actual identifier data. The invalid identifier will be stored. If BIND later needs to render that record to text, it will use the invalid length during processing, leading to a consistency check failing. This issue affects BIND 9 versions 9.18.0 through 9.18.50, 9.20.0 through 9.20.24, 9.21.0 through 9.21.23, 9.18.11-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.24-S1. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | bind Fedora 43 | 32:9.18.51^git20261003.d0a87358-2.fc43 | [FEDORA-2026-ABA85B9A89](https://patchblox.com/security/data/fix/linux/fedora-2026-aba85b9a89.md) | Nov 7, 2026 | | Linux | bind amzn 2023 | 32:9.18.50-1.amzn2023.0.2 | [ALAS2023-2026-2040](https://patchblox.com/security/data/fix/linux/alas2023-2026-2040.md) | Aug 3, 2026 | | Linux | bind opensuse-leap 16.0 | 9.20.26-160000.1.1 | [OPENSUSE-SU-2026:21489-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21489-1.md) | Jul 30, 2026 | | Linux | bind sles 15.6 | 9.18.50-150600.3.32.1 | [SUSE-SU-2026:3452-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-3452-1.md) | Aug 3, 2026 | | Linux | bind sles 15.7 | 9.20.26-150700.3.29.1 | [SUSE-SU-2026:3426-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-3426-1.md) | Jul 30, 2026 | | Linux | bind-chroot Fedora 43 | 32:9.18.51^git20261003.d0a87358-2.fc43 | [FEDORA-2026-ABA85B9A89](https://patchblox.com/security/data/fix/linux/fedora-2026-aba85b9a89.md) | Nov 7, 2026 | | Linux | bind-chroot amzn 2023 | 32:9.18.50-1.amzn2023.0.2 | [ALAS2023-2026-2040](https://patchblox.com/security/data/fix/linux/alas2023-2026-2040.md) | Aug 3, 2026 | | Linux | bind-debuginfo Fedora 43 | 32:9.18.51^git20261003.d0a87358-2.fc43 | [FEDORA-2026-ABA85B9A89](https://patchblox.com/security/data/fix/linux/fedora-2026-aba85b9a89.md) | Nov 7, 2026 | | Linux | bind-debuginfo amzn 2023 | 32:9.18.50-1.amzn2023.0.2 | [ALAS2023-2026-2040](https://patchblox.com/security/data/fix/linux/alas2023-2026-2040.md) | Aug 3, 2026 | | Linux | bind-debugsource Fedora 43 | 32:9.18.51^git20261003.d0a87358-2.fc43 | [FEDORA-2026-ABA85B9A89](https://patchblox.com/security/data/fix/linux/fedora-2026-aba85b9a89.md) | Nov 7, 2026 | | Linux | bind-debugsource amzn 2023 | 32:9.18.50-1.amzn2023.0.2 | [ALAS2023-2026-2040](https://patchblox.com/security/data/fix/linux/alas2023-2026-2040.md) | Aug 3, 2026 | | Linux | bind-devel Fedora 43 | 32:9.18.51^git20261003.d0a87358-2.fc43 | [FEDORA-2026-ABA85B9A89](https://patchblox.com/security/data/fix/linux/fedora-2026-aba85b9a89.md) | Nov 7, 2026 | | Linux | bind-devel amzn 2023 | 32:9.18.50-1.amzn2023.0.2 | [ALAS2023-2026-2040](https://patchblox.com/security/data/fix/linux/alas2023-2026-2040.md) | Aug 3, 2026 | | Linux | bind-dnssec-utils Fedora 43 | 32:9.18.51^git20261003.d0a87358-2.fc43 | [FEDORA-2026-ABA85B9A89](https://patchblox.com/security/data/fix/linux/fedora-2026-aba85b9a89.md) | Nov 7, 2026 | | Linux | bind-dnssec-utils amzn 2023 | 32:9.18.50-1.amzn2023.0.2 | [ALAS2023-2026-2040](https://patchblox.com/security/data/fix/linux/alas2023-2026-2040.md) | Aug 3, 2026 | | Linux | bind-dnssec-utils-debuginfo Fedora 43 | 32:9.18.51^git20261003.d0a87358-2.fc43 | [FEDORA-2026-ABA85B9A89](https://patchblox.com/security/data/fix/linux/fedora-2026-aba85b9a89.md) | Nov 7, 2026 | | Linux | bind-dnssec-utils-debuginfo amzn 2023 | 32:9.18.50-1.amzn2023.0.2 | [ALAS2023-2026-2040](https://patchblox.com/security/data/fix/linux/alas2023-2026-2040.md) | Aug 3, 2026 | | Linux | bind-doc Fedora 43 | 32:9.18.51^git20261003.d0a87358-2.fc43 | [FEDORA-2026-ABA85B9A89](https://patchblox.com/security/data/fix/linux/fedora-2026-aba85b9a89.md) | Nov 7, 2026 | | Linux | bind-doc amzn 2023 | 32:9.18.50-1.amzn2023.0.2 | [ALAS2023-2026-2040](https://patchblox.com/security/data/fix/linux/alas2023-2026-2040.md) | Aug 3, 2026 | | Linux | bind-dyndb-ldap Fedora 43 | 11.11-15.fc43 | [FEDORA-2026-ABA85B9A89](https://patchblox.com/security/data/fix/linux/fedora-2026-aba85b9a89.md) | Nov 7, 2026 | | Linux | bind-dyndb-ldap-debuginfo Fedora 43 | 11.11-15.fc43 | [FEDORA-2026-ABA85B9A89](https://patchblox.com/security/data/fix/linux/fedora-2026-aba85b9a89.md) | Nov 7, 2026 | | Linux | bind-dyndb-ldap-debugsource Fedora 43 | 11.11-15.fc43 | [FEDORA-2026-ABA85B9A89](https://patchblox.com/security/data/fix/linux/fedora-2026-aba85b9a89.md) | Nov 7, 2026 | | Linux | bind-libs Fedora 43 | 32:9.18.51^git20261003.d0a87358-2.fc43 | [FEDORA-2026-ABA85B9A89](https://patchblox.com/security/data/fix/linux/fedora-2026-aba85b9a89.md) | Nov 7, 2026 | | Linux | bind-libs amzn 2023 | 32:9.18.50-1.amzn2023.0.2 | [ALAS2023-2026-2040](https://patchblox.com/security/data/fix/linux/alas2023-2026-2040.md) | Aug 3, 2026 | | Linux | bind-libs-debuginfo Fedora 43 | 32:9.18.51^git20261003.d0a87358-2.fc43 | [FEDORA-2026-ABA85B9A89](https://patchblox.com/security/data/fix/linux/fedora-2026-aba85b9a89.md) | Nov 7, 2026 | | Linux | bind-libs-debuginfo amzn 2023 | 32:9.18.50-1.amzn2023.0.2 | [ALAS2023-2026-2040](https://patchblox.com/security/data/fix/linux/alas2023-2026-2040.md) | Aug 3, 2026 | | Linux | bind-license amzn 2023 | 32:9.18.50-1.amzn2023.0.2 | [ALAS2023-2026-2040](https://patchblox.com/security/data/fix/linux/alas2023-2026-2040.md) | Aug 3, 2026 | | Linux | bind-utils Fedora 43 | 32:9.18.51^git20261003.d0a87358-2.fc43 | [FEDORA-2026-ABA85B9A89](https://patchblox.com/security/data/fix/linux/fedora-2026-aba85b9a89.md) | Nov 7, 2026 | | Linux | bind-utils amzn 2023 | 32:9.18.50-1.amzn2023.0.2 | [ALAS2023-2026-2040](https://patchblox.com/security/data/fix/linux/alas2023-2026-2040.md) | Aug 3, 2026 | | Linux | bind-utils-debuginfo Fedora 43 | 32:9.18.51^git20261003.d0a87358-2.fc43 | [FEDORA-2026-ABA85B9A89](https://patchblox.com/security/data/fix/linux/fedora-2026-aba85b9a89.md) | Nov 7, 2026 | | Linux | bind-utils-debuginfo amzn 2023 | 32:9.18.50-1.amzn2023.0.2 | [ALAS2023-2026-2040](https://patchblox.com/security/data/fix/linux/alas2023-2026-2040.md) | Aug 3, 2026 | | Linux | bind9 Debian 12.15 (bookworm) | 1:9.18.49-1~deb12u2 | [DEBIAN-CVE-2026-10822](https://patchblox.com/security/data/fix/linux/debian-cve-2026-10822.md) | Jul 23, 2026 | | Linux | bind9 Debian 13.5 (trixie) | 1:9.20.26-1~deb13u1 | [DEBIAN-CVE-2026-10822](https://patchblox.com/security/data/fix/linux/debian-cve-2026-10822.md) | Jul 23, 2026 | | Linux | bind9 Debian 14 | 1:9.20.26-1 | [DEBIAN-CVE-2026-10822](https://patchblox.com/security/data/fix/linux/debian-cve-2026-10822.md) | Jul 23, 2026 | | Linux | bind9 Ubuntu 20.04 LTS (focal) | 1:9.18.30-0ubuntu0.20.04.2+esm3 | [bind9 1:9.18.30-0ubuntu0.20.04.2+esm3](https://patchblox.com/security/data/fix/linux/ubuntu-focal-bind9-1-9.18.30-0ubuntu0.20.04.2-esm3.md) | Sep 16, 2026 | | Linux | bind9 Ubuntu 22.04.1 LTS (jammy) | 1:9.18.39-0ubuntu0.22.04.5 | [bind9 1:9.18.39-0ubuntu0.22.04.5](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-bind9-1-9.18.39-0ubuntu0.22.04.5.md) | Aug 20, 2026 | | Linux | bind9 Ubuntu 24.04.5 LTS (noble) | 1:9.18.39-0ubuntu0.24.04.6 | [bind9 1:9.18.39-0ubuntu0.24.04.6](https://patchblox.com/security/data/fix/linux/ubuntu-noble-bind9-1-9.18.39-0ubuntu0.24.04.6.md) | Aug 20, 2026 | | Linux | bind9 Ubuntu 26.04.1 LTS (resolute) | 1:9.20.24-1ubuntu0.2 | [bind9 1:9.20.24-1ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-bind9-1-9.20.24-1ubuntu0.2.md) | Jul 22, 2026 | | Linux | bind9-dnsutils Ubuntu 20.04 LTS (focal) | 1:9.18.30-0ubuntu0.20.04.2+esm3 | [bind9-dnsutils 1:9.18.30-0ubuntu0.20.04.2+esm3](https://patchblox.com/security/data/fix/linux/ubuntu-focal-bind9-dnsutils-1-9.18.30-0ubuntu0.20.04.2-esm3.md) | Sep 16, 2026 | | Linux | bind9-dnsutils Ubuntu 22.04.1 LTS (jammy) | 1:9.18.39-0ubuntu0.22.04.5 | [bind9-dnsutils 1:9.18.39-0ubuntu0.22.04.5](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-bind9-dnsutils-1-9.18.39-0ubuntu0.22.04.5.md) | Aug 20, 2026 | | Linux | bind9-dnsutils Ubuntu 24.04.5 LTS (noble) | 1:9.18.39-0ubuntu0.24.04.6 | [bind9-dnsutils 1:9.18.39-0ubuntu0.24.04.6](https://patchblox.com/security/data/fix/linux/ubuntu-noble-bind9-dnsutils-1-9.18.39-0ubuntu0.24.04.6.md) | Aug 20, 2026 | | Linux | bind9-dnsutils Ubuntu 26.04.1 LTS (resolute) | 1:9.20.24-1ubuntu0.2 | [bind9-dnsutils 1:9.20.24-1ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-bind9-dnsutils-1-9.20.24-1ubuntu0.2.md) | Jul 22, 2026 | | Linux | bind9-host Ubuntu 20.04 LTS (focal) | 1:9.18.30-0ubuntu0.20.04.2+esm3 | [bind9-host 1:9.18.30-0ubuntu0.20.04.2+esm3](https://patchblox.com/security/data/fix/linux/ubuntu-focal-bind9-host-1-9.18.30-0ubuntu0.20.04.2-esm3.md) | Sep 16, 2026 | | Linux | bind9-host Ubuntu 22.04.1 LTS (jammy) | 1:9.18.39-0ubuntu0.22.04.5 | [bind9-host 1:9.18.39-0ubuntu0.22.04.5](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-bind9-host-1-9.18.39-0ubuntu0.22.04.5.md) | Aug 20, 2026 | | Linux | bind9-host Ubuntu 24.04.5 LTS (noble) | 1:9.18.39-0ubuntu0.24.04.6 | [bind9-host 1:9.18.39-0ubuntu0.24.04.6](https://patchblox.com/security/data/fix/linux/ubuntu-noble-bind9-host-1-9.18.39-0ubuntu0.24.04.6.md) | Aug 20, 2026 | | Linux | bind9-host Ubuntu 26.04.1 LTS (resolute) | 1:9.20.24-1ubuntu0.2 | [bind9-host 1:9.20.24-1ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-bind9-host-1-9.20.24-1ubuntu0.2.md) | Jul 22, 2026 | | Linux | bind9-libs Ubuntu 20.04 LTS (focal) | 1:9.18.30-0ubuntu0.20.04.2+esm3 | [bind9-libs 1:9.18.30-0ubuntu0.20.04.2+esm3](https://patchblox.com/security/data/fix/linux/ubuntu-focal-bind9-libs-1-9.18.30-0ubuntu0.20.04.2-esm3.md) | Sep 16, 2026 | | Linux | bind9-libs Ubuntu 22.04.1 LTS (jammy) | 1:9.18.39-0ubuntu0.22.04.5 | [bind9-libs 1:9.18.39-0ubuntu0.22.04.5](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-bind9-libs-1-9.18.39-0ubuntu0.22.04.5.md) | Aug 20, 2026 | | Linux | bind9-libs Ubuntu 24.04.5 LTS (noble) | 1:9.18.39-0ubuntu0.24.04.6 | [bind9-libs 1:9.18.39-0ubuntu0.24.04.6](https://patchblox.com/security/data/fix/linux/ubuntu-noble-bind9-libs-1-9.18.39-0ubuntu0.24.04.6.md) | Aug 20, 2026 | | Linux | bind9-libs Ubuntu 26.04.1 LTS (resolute) | 1:9.20.24-1ubuntu0.2 | [bind9-libs 1:9.20.24-1ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-bind9-libs-1-9.20.24-1ubuntu0.2.md) | Jul 22, 2026 | | Linux | bind9-utils Ubuntu 20.04 LTS (focal) | 1:9.18.30-0ubuntu0.20.04.2+esm3 | [bind9-utils 1:9.18.30-0ubuntu0.20.04.2+esm3](https://patchblox.com/security/data/fix/linux/ubuntu-focal-bind9-utils-1-9.18.30-0ubuntu0.20.04.2-esm3.md) | Sep 16, 2026 | | Linux | bind9-utils Ubuntu 22.04.1 LTS (jammy) | 1:9.18.39-0ubuntu0.22.04.5 | [bind9-utils 1:9.18.39-0ubuntu0.22.04.5](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-bind9-utils-1-9.18.39-0ubuntu0.22.04.5.md) | Aug 20, 2026 | | Linux | bind9-utils Ubuntu 24.04.5 LTS (noble) | 1:9.18.39-0ubuntu0.24.04.6 | [bind9-utils 1:9.18.39-0ubuntu0.24.04.6](https://patchblox.com/security/data/fix/linux/ubuntu-noble-bind9-utils-1-9.18.39-0ubuntu0.24.04.6.md) | Aug 20, 2026 | | Linux | bind9-utils Ubuntu 26.04.1 LTS (resolute) | 1:9.20.24-1ubuntu0.2 | [bind9-utils 1:9.20.24-1ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-bind9-utils-1-9.20.24-1ubuntu0.2.md) | Jul 22, 2026 | | Linux | bind9utils Ubuntu 20.04 LTS (focal) | 1:9.18.30-0ubuntu0.20.04.2+esm3 | [bind9utils 1:9.18.30-0ubuntu0.20.04.2+esm3](https://patchblox.com/security/data/fix/linux/ubuntu-focal-bind9utils-1-9.18.30-0ubuntu0.20.04.2-esm3.md) | Sep 16, 2026 | | Linux | bind9utils Ubuntu 22.04.1 LTS (jammy) | 1:9.18.39-0ubuntu0.22.04.5 | [bind9utils 1:9.18.39-0ubuntu0.22.04.5](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-bind9utils-1-9.18.39-0ubuntu0.22.04.5.md) | Aug 20, 2026 | | Linux | bind9utils Ubuntu 24.04.5 LTS (noble) | 1:9.18.39-0ubuntu0.24.04.6 | [bind9utils 1:9.18.39-0ubuntu0.24.04.6](https://patchblox.com/security/data/fix/linux/ubuntu-noble-bind9utils-1-9.18.39-0ubuntu0.24.04.6.md) | Aug 20, 2026 | | Linux | dnsutils Ubuntu 20.04 LTS (focal) | 1:9.18.30-0ubuntu0.20.04.2+esm3 | [dnsutils 1:9.18.30-0ubuntu0.20.04.2+esm3](https://patchblox.com/security/data/fix/linux/ubuntu-focal-dnsutils-1-9.18.30-0ubuntu0.20.04.2-esm3.md) | Sep 16, 2026 | | Linux | dnsutils Ubuntu 22.04.1 LTS (jammy) | 1:9.18.39-0ubuntu0.22.04.5 | [dnsutils 1:9.18.39-0ubuntu0.22.04.5](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-dnsutils-1-9.18.39-0ubuntu0.22.04.5.md) | Aug 20, 2026 | | Linux | dnsutils Ubuntu 24.04.5 LTS (noble) | 1:9.18.39-0ubuntu0.24.04.6 | [dnsutils 1:9.18.39-0ubuntu0.24.04.6](https://patchblox.com/security/data/fix/linux/ubuntu-noble-dnsutils-1-9.18.39-0ubuntu0.24.04.6.md) | Aug 20, 2026 | --- Data as of 2026-11-08T19:12:23Z UTC. 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