# CVE-2021-25219: bind: The Berkeley Internet Name Domain (BIND) is an implementation of the Domain Name System (DNS) protocols

CVE-2021-25219 is fixed in 36 products on 1 platform, first by bind9 1:9.11.3+dfsg-1ubuntu1.16, released October 26, 2021. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2021-25219
- Priority: Routine
- CVSS: 5.3 (Moderate)
- EPSS: 0.1116
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Oct 26, 2021

## Description

The Berkeley Internet Name Domain (BIND) is an implementation of the Domain Name System (DNS) protocols. BIND includes a DNS server (named); a resolver library (routines for applications to use when interfacing with DNS); and tools for verifying that the DNS server is operating correctly.  The following packages have been upgraded to a later upstream version: bind (9.11.36). (BZ#2013993)  Security Fix(es):  * bind: Lame cache can be abused to severely degrade resolver performance (CVE-2021-25219)  For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.  Additional Changes:  For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.6 Release Notes linked from the References section.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | bind RHEL 8 | 32:9.11.36-3.el8 | [RHSA-2022:2092](https://patchblox.com/security/data/fix/linux/rhsa-2022-2092.md) | May 10, 2022 |
| Linux | bind almalinux 8 | 32:9.11.36-3.el8 | [ALSA-2022:2092](https://patchblox.com/security/data/fix/linux/alsa-2022-2092.md) | May 10, 2022 |
| Linux | bind ol 8 | 32:9.11.36-3.el8 | [ELSA-2022-2092](https://patchblox.com/security/data/fix/linux/elsa-2022-2092.md) | May 17, 2022 |
| Linux | bind rocky 8 | 2:9.11.36-3.el8 | [RLSA-2022:2092](https://patchblox.com/security/data/fix/linux/rlsa-2022-2092.md) | May 10, 2022 |
| Linux | bind-chroot RHEL 8 | 32:9.11.36-3.el8 | [RHSA-2022:2092](https://patchblox.com/security/data/fix/linux/rhsa-2022-2092.md) | May 10, 2022 |
| Linux | bind-chroot almalinux 8 | 32:9.11.36-3.el8 | [ALSA-2022:2092](https://patchblox.com/security/data/fix/linux/alsa-2022-2092.md) | May 10, 2022 |
| Linux | bind-chroot ol 8 | 32:9.11.36-3.el8 | [ELSA-2022-2092](https://patchblox.com/security/data/fix/linux/elsa-2022-2092.md) | May 17, 2022 |
| Linux | bind-devel RHEL 8 | 32:9.11.36-3.el8 | [RHSA-2022:2092](https://patchblox.com/security/data/fix/linux/rhsa-2022-2092.md) | May 10, 2022 |
| Linux | bind-devel almalinux 8 | 32:9.11.36-3.el8 | [ALSA-2022:2092](https://patchblox.com/security/data/fix/linux/alsa-2022-2092.md) | May 10, 2022 |
| Linux | bind-devel ol 8 | 32:9.11.36-3.el8 | [ELSA-2022-2092](https://patchblox.com/security/data/fix/linux/elsa-2022-2092.md) | May 17, 2022 |
| Linux | bind-export-devel RHEL 8 | 32:9.11.36-3.el8 | [RHSA-2022:2092](https://patchblox.com/security/data/fix/linux/rhsa-2022-2092.md) | May 10, 2022 |
| Linux | bind-export-devel almalinux 8 | 32:9.11.36-3.el8 | [ALSA-2022:2092](https://patchblox.com/security/data/fix/linux/alsa-2022-2092.md) | May 10, 2022 |
| Linux | bind-export-devel ol 8 | 32:9.11.36-3.el8 | [ELSA-2022-2092](https://patchblox.com/security/data/fix/linux/elsa-2022-2092.md) | May 17, 2022 |
| Linux | bind-export-libs RHEL 8 | 32:9.11.36-3.el8 | [RHSA-2022:2092](https://patchblox.com/security/data/fix/linux/rhsa-2022-2092.md) | May 10, 2022 |
| Linux | bind-export-libs almalinux 8 | 32:9.11.36-3.el8 | [ALSA-2022:2092](https://patchblox.com/security/data/fix/linux/alsa-2022-2092.md) | May 10, 2022 |
| Linux | bind-export-libs ol 8 | 32:9.11.36-3.el8 | [ELSA-2022-2092](https://patchblox.com/security/data/fix/linux/elsa-2022-2092.md) | May 17, 2022 |
| Linux | bind-libs RHEL 8 | 32:9.11.36-3.el8 | [RHSA-2022:2092](https://patchblox.com/security/data/fix/linux/rhsa-2022-2092.md) | May 10, 2022 |
| Linux | bind-libs almalinux 8 | 32:9.11.36-3.el8 | [ALSA-2022:2092](https://patchblox.com/security/data/fix/linux/alsa-2022-2092.md) | May 10, 2022 |
| Linux | bind-libs ol 8 | 32:9.11.36-3.el8 | [ELSA-2022-2092](https://patchblox.com/security/data/fix/linux/elsa-2022-2092.md) | May 17, 2022 |
| Linux | bind-libs-lite RHEL 8 | 32:9.11.36-3.el8 | [RHSA-2022:2092](https://patchblox.com/security/data/fix/linux/rhsa-2022-2092.md) | May 10, 2022 |
| Linux | bind-libs-lite almalinux 8 | 32:9.11.36-3.el8 | [ALSA-2022:2092](https://patchblox.com/security/data/fix/linux/alsa-2022-2092.md) | May 10, 2022 |
| Linux | bind-libs-lite ol 8 | 32:9.11.36-3.el8 | [ELSA-2022-2092](https://patchblox.com/security/data/fix/linux/elsa-2022-2092.md) | May 17, 2022 |
| Linux | bind-license RHEL 8 | 32:9.11.36-3.el8 | [RHSA-2022:2092](https://patchblox.com/security/data/fix/linux/rhsa-2022-2092.md) | May 10, 2022 |
| Linux | bind-license almalinux 8 | 32:9.11.36-3.el8 | [ALSA-2022:2092](https://patchblox.com/security/data/fix/linux/alsa-2022-2092.md) | May 10, 2022 |
| Linux | bind-license ol 8 | 32:9.11.36-3.el8 | [ELSA-2022-2092](https://patchblox.com/security/data/fix/linux/elsa-2022-2092.md) | May 17, 2022 |
| Linux | bind-lite-devel RHEL 8 | 32:9.11.36-3.el8 | [RHSA-2022:2092](https://patchblox.com/security/data/fix/linux/rhsa-2022-2092.md) | May 10, 2022 |
| Linux | bind-lite-devel almalinux 8 | 32:9.11.36-3.el8 | [ALSA-2022:2092](https://patchblox.com/security/data/fix/linux/alsa-2022-2092.md) | May 10, 2022 |
| Linux | bind-lite-devel ol 8 | 32:9.11.36-3.el8 | [ELSA-2022-2092](https://patchblox.com/security/data/fix/linux/elsa-2022-2092.md) | May 17, 2022 |
| Linux | bind-pkcs11 RHEL 8 | 32:9.11.36-3.el8 | [RHSA-2022:2092](https://patchblox.com/security/data/fix/linux/rhsa-2022-2092.md) | May 10, 2022 |
| Linux | bind-pkcs11 almalinux 8 | 32:9.11.36-3.el8 | [ALSA-2022:2092](https://patchblox.com/security/data/fix/linux/alsa-2022-2092.md) | May 10, 2022 |
| Linux | bind-pkcs11 ol 8 | 32:9.11.36-3.el8 | [ELSA-2022-2092](https://patchblox.com/security/data/fix/linux/elsa-2022-2092.md) | May 17, 2022 |
| Linux | bind-pkcs11-devel RHEL 8 | 32:9.11.36-3.el8 | [RHSA-2022:2092](https://patchblox.com/security/data/fix/linux/rhsa-2022-2092.md) | May 10, 2022 |
| Linux | bind-pkcs11-devel almalinux 8 | 32:9.11.36-3.el8 | [ALSA-2022:2092](https://patchblox.com/security/data/fix/linux/alsa-2022-2092.md) | May 10, 2022 |
| Linux | bind-pkcs11-devel ol 8 | 32:9.11.36-3.el8 | [ELSA-2022-2092](https://patchblox.com/security/data/fix/linux/elsa-2022-2092.md) | May 17, 2022 |
| Linux | bind-pkcs11-libs RHEL 8 | 32:9.11.36-3.el8 | [RHSA-2022:2092](https://patchblox.com/security/data/fix/linux/rhsa-2022-2092.md) | May 10, 2022 |
| Linux | bind-pkcs11-libs almalinux 8 | 32:9.11.36-3.el8 | [ALSA-2022:2092](https://patchblox.com/security/data/fix/linux/alsa-2022-2092.md) | May 10, 2022 |
| Linux | bind-pkcs11-libs ol 8 | 32:9.11.36-3.el8 | [ELSA-2022-2092](https://patchblox.com/security/data/fix/linux/elsa-2022-2092.md) | May 17, 2022 |
| Linux | bind-pkcs11-utils RHEL 8 | 32:9.11.36-3.el8 | [RHSA-2022:2092](https://patchblox.com/security/data/fix/linux/rhsa-2022-2092.md) | May 10, 2022 |
| Linux | bind-pkcs11-utils almalinux 8 | 32:9.11.36-3.el8 | [ALSA-2022:2092](https://patchblox.com/security/data/fix/linux/alsa-2022-2092.md) | May 10, 2022 |
| Linux | bind-pkcs11-utils ol 8 | 32:9.11.36-3.el8 | [ELSA-2022-2092](https://patchblox.com/security/data/fix/linux/elsa-2022-2092.md) | May 17, 2022 |
| Linux | bind-sdb RHEL 8 | 32:9.11.36-3.el8 | [RHSA-2022:2092](https://patchblox.com/security/data/fix/linux/rhsa-2022-2092.md) | May 10, 2022 |
| Linux | bind-sdb almalinux 8 | 32:9.11.36-3.el8 | [ALSA-2022:2092](https://patchblox.com/security/data/fix/linux/alsa-2022-2092.md) | May 10, 2022 |
| Linux | bind-sdb ol 8 | 32:9.11.36-3.el8 | [ELSA-2022-2092](https://patchblox.com/security/data/fix/linux/elsa-2022-2092.md) | May 17, 2022 |
| Linux | bind-sdb-chroot RHEL 8 | 32:9.11.36-3.el8 | [RHSA-2022:2092](https://patchblox.com/security/data/fix/linux/rhsa-2022-2092.md) | May 10, 2022 |
| Linux | bind-sdb-chroot almalinux 8 | 32:9.11.36-3.el8 | [ALSA-2022:2092](https://patchblox.com/security/data/fix/linux/alsa-2022-2092.md) | May 10, 2022 |
| Linux | bind-sdb-chroot ol 8 | 32:9.11.36-3.el8 | [ELSA-2022-2092](https://patchblox.com/security/data/fix/linux/elsa-2022-2092.md) | May 17, 2022 |
| Linux | bind-utils RHEL 8 | 32:9.11.36-3.el8 | [RHSA-2022:2092](https://patchblox.com/security/data/fix/linux/rhsa-2022-2092.md) | May 10, 2022 |
| Linux | bind-utils almalinux 8 | 32:9.11.36-3.el8 | [ALSA-2022:2092](https://patchblox.com/security/data/fix/linux/alsa-2022-2092.md) | May 10, 2022 |
| Linux | bind-utils ol 8 | 32:9.11.36-3.el8 | [ELSA-2022-2092](https://patchblox.com/security/data/fix/linux/elsa-2022-2092.md) | May 17, 2022 |
| Linux | bind9 Ubuntu 18.04.6 LTS (bionic) | 1:9.11.3+dfsg-1ubuntu1.16 | [bind9 1:9.11.3+dfsg-1ubuntu1.16](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-bind9-1-9.11.3-dfsg-1ubuntu1.16.md) | Oct 26, 2021 |
| Linux | bind9 Ubuntu 20.04 LTS (focal) | 1:9.16.1-0ubuntu2.9 | [bind9 1:9.16.1-0ubuntu2.9](https://patchblox.com/security/data/fix/linux/ubuntu-focal-bind9-1-9.16.1-0ubuntu2.9.md) | Oct 26, 2021 |
| Linux | bind9 Ubuntu 22.04.1 LTS (jammy) | 1:9.16.15-1ubuntu2 | [bind9 1:9.16.15-1ubuntu2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-bind9-1-9.16.15-1ubuntu2.md) | Oct 26, 2021 |
| Linux | bind9-dnsutils Ubuntu 20.04 LTS (focal) | 1:9.16.1-0ubuntu2.9 | [bind9-dnsutils 1:9.16.1-0ubuntu2.9](https://patchblox.com/security/data/fix/linux/ubuntu-focal-bind9-dnsutils-1-9.16.1-0ubuntu2.9.md) | Oct 26, 2021 |
| Linux | bind9-dnsutils Ubuntu 22.04.1 LTS (jammy) | 1:9.16.15-1ubuntu2 | [bind9-dnsutils 1:9.16.15-1ubuntu2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-bind9-dnsutils-1-9.16.15-1ubuntu2.md) | Oct 26, 2021 |
| Linux | bind9-host Ubuntu 18.04.6 LTS (bionic) | 1:9.11.3+dfsg-1ubuntu1.16 | [bind9-host 1:9.11.3+dfsg-1ubuntu1.16](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-bind9-host-1-9.11.3-dfsg-1ubuntu1.16.md) | Oct 26, 2021 |
| Linux | bind9-host Ubuntu 20.04 LTS (focal) | 1:9.16.1-0ubuntu2.9 | [bind9-host 1:9.16.1-0ubuntu2.9](https://patchblox.com/security/data/fix/linux/ubuntu-focal-bind9-host-1-9.16.1-0ubuntu2.9.md) | Oct 26, 2021 |
| Linux | bind9-host Ubuntu 22.04.1 LTS (jammy) | 1:9.16.15-1ubuntu2 | [bind9-host 1:9.16.15-1ubuntu2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-bind9-host-1-9.16.15-1ubuntu2.md) | Oct 26, 2021 |
| Linux | bind9-libs Ubuntu 20.04 LTS (focal) | 1:9.16.1-0ubuntu2.9 | [bind9-libs 1:9.16.1-0ubuntu2.9](https://patchblox.com/security/data/fix/linux/ubuntu-focal-bind9-libs-1-9.16.1-0ubuntu2.9.md) | Oct 26, 2021 |
| Linux | bind9-libs Ubuntu 22.04.1 LTS (jammy) | 1:9.16.15-1ubuntu2 | [bind9-libs 1:9.16.15-1ubuntu2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-bind9-libs-1-9.16.15-1ubuntu2.md) | Oct 26, 2021 |
| Linux | bind9-utils Ubuntu 20.04 LTS (focal) | 1:9.16.1-0ubuntu2.9 | [bind9-utils 1:9.16.1-0ubuntu2.9](https://patchblox.com/security/data/fix/linux/ubuntu-focal-bind9-utils-1-9.16.1-0ubuntu2.9.md) | Oct 26, 2021 |
| Linux | bind9-utils Ubuntu 22.04.1 LTS (jammy) | 1:9.16.15-1ubuntu2 | [bind9-utils 1:9.16.15-1ubuntu2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-bind9-utils-1-9.16.15-1ubuntu2.md) | Oct 26, 2021 |
| Linux | bind9utils Ubuntu 18.04.6 LTS (bionic) | 1:9.11.3+dfsg-1ubuntu1.16 | [bind9utils 1:9.11.3+dfsg-1ubuntu1.16](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-bind9utils-1-9.11.3-dfsg-1ubuntu1.16.md) | Oct 26, 2021 |
| Linux | bind9utils Ubuntu 20.04 LTS (focal) | 1:9.16.1-0ubuntu2.9 | [bind9utils 1:9.16.1-0ubuntu2.9](https://patchblox.com/security/data/fix/linux/ubuntu-focal-bind9utils-1-9.16.1-0ubuntu2.9.md) | Oct 26, 2021 |
| Linux | bind9utils Ubuntu 22.04.1 LTS (jammy) | 1:9.16.15-1ubuntu2 | [bind9utils 1:9.16.15-1ubuntu2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-bind9utils-1-9.16.15-1ubuntu2.md) | Oct 26, 2021 |
| Linux | dnsutils Ubuntu 18.04.6 LTS (bionic) | 1:9.11.3+dfsg-1ubuntu1.16 | [dnsutils 1:9.11.3+dfsg-1ubuntu1.16](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-dnsutils-1-9.11.3-dfsg-1ubuntu1.16.md) | Oct 26, 2021 |
| Linux | dnsutils Ubuntu 20.04 LTS (focal) | 1:9.16.1-0ubuntu2.9 | [dnsutils 1:9.16.1-0ubuntu2.9](https://patchblox.com/security/data/fix/linux/ubuntu-focal-dnsutils-1-9.16.1-0ubuntu2.9.md) | Oct 26, 2021 |
| Linux | dnsutils Ubuntu 22.04.1 LTS (jammy) | 1:9.16.15-1ubuntu2 | [dnsutils 1:9.16.15-1ubuntu2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-dnsutils-1-9.16.15-1ubuntu2.md) | Oct 26, 2021 |
| Linux | libbind9-160 Ubuntu 18.04.6 LTS (bionic) | 1:9.11.3+dfsg-1ubuntu1.16 | [libbind9-160 1:9.11.3+dfsg-1ubuntu1.16](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libbind9-160-1-9.11.3-dfsg-1ubuntu1.16.md) | Oct 26, 2021 |
| Linux | libdns-export1100 Ubuntu 18.04.6 LTS (bionic) | 1:9.11.3+dfsg-1ubuntu1.16 | [libdns-export1100 1:9.11.3+dfsg-1ubuntu1.16](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libdns-export1100-1-9.11.3-dfsg-1ubuntu1.16.md) | Oct 26, 2021 |
| Linux | libdns1100 Ubuntu 18.04.6 LTS (bionic) | 1:9.11.3+dfsg-1ubuntu1.16 | [libdns1100 1:9.11.3+dfsg-1ubuntu1.16](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libdns1100-1-9.11.3-dfsg-1ubuntu1.16.md) | Oct 26, 2021 |
| Linux | libirs-export160 Ubuntu 18.04.6 LTS (bionic) | 1:9.11.3+dfsg-1ubuntu1.16 | [libirs-export160 1:9.11.3+dfsg-1ubuntu1.16](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libirs-export160-1-9.11.3-dfsg-1ubuntu1.16.md) | Oct 26, 2021 |
| Linux | libirs160 Ubuntu 18.04.6 LTS (bionic) | 1:9.11.3+dfsg-1ubuntu1.16 | [libirs160 1:9.11.3+dfsg-1ubuntu1.16](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libirs160-1-9.11.3-dfsg-1ubuntu1.16.md) | Oct 26, 2021 |
| Linux | libisc-export169 Ubuntu 18.04.6 LTS (bionic) | 1:9.11.3+dfsg-1ubuntu1.16 | [libisc-export169 1:9.11.3+dfsg-1ubuntu1.16](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libisc-export169-1-9.11.3-dfsg-1ubuntu1.16.md) | Oct 26, 2021 |
| Linux | libisc169 Ubuntu 18.04.6 LTS (bionic) | 1:9.11.3+dfsg-1ubuntu1.16 | [libisc169 1:9.11.3+dfsg-1ubuntu1.16](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libisc169-1-9.11.3-dfsg-1ubuntu1.16.md) | Oct 26, 2021 |
| Linux | libisccc-export160 Ubuntu 18.04.6 LTS (bionic) | 1:9.11.3+dfsg-1ubuntu1.16 | [libisccc-export160 1:9.11.3+dfsg-1ubuntu1.16](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libisccc-export160-1-9.11.3-dfsg-1ubuntu1.16.md) | Oct 26, 2021 |
| Linux | libisccc160 Ubuntu 18.04.6 LTS (bionic) | 1:9.11.3+dfsg-1ubuntu1.16 | [libisccc160 1:9.11.3+dfsg-1ubuntu1.16](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libisccc160-1-9.11.3-dfsg-1ubuntu1.16.md) | Oct 26, 2021 |
| Linux | libisccfg-export160 Ubuntu 18.04.6 LTS (bionic) | 1:9.11.3+dfsg-1ubuntu1.16 | [libisccfg-export160 1:9.11.3+dfsg-1ubuntu1.16](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libisccfg-export160-1-9.11.3-dfsg-1ubuntu1.16.md) | Oct 26, 2021 |
| Linux | libisccfg160 Ubuntu 18.04.6 LTS (bionic) | 1:9.11.3+dfsg-1ubuntu1.16 | [libisccfg160 1:9.11.3+dfsg-1ubuntu1.16](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libisccfg160-1-9.11.3-dfsg-1ubuntu1.16.md) | Oct 26, 2021 |
| Linux | liblwres160 Ubuntu 18.04.6 LTS (bionic) | 1:9.11.3+dfsg-1ubuntu1.16 | [liblwres160 1:9.11.3+dfsg-1ubuntu1.16](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-liblwres160-1-9.11.3-dfsg-1ubuntu1.16.md) | Oct 26, 2021 |
| Linux | python3-bind RHEL 8 | 32:9.11.36-3.el8 | [RHSA-2022:2092](https://patchblox.com/security/data/fix/linux/rhsa-2022-2092.md) | May 10, 2022 |
| Linux | python3-bind almalinux 8 | 32:9.11.36-3.el8 | [ALSA-2022:2092](https://patchblox.com/security/data/fix/linux/alsa-2022-2092.md) | May 10, 2022 |
| Linux | python3-bind ol 8 | 32:9.11.36-3.el8 | [ELSA-2022-2092](https://patchblox.com/security/data/fix/linux/elsa-2022-2092.md) | May 17, 2022 |

---

Data as of 2026-11-07T06:34:28Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo