Description
In BIND 9.3.0 -> 9.11.35, 9.12.0 -> 9.16.21, and versions 9.9.3-S1 -> 9.11.35-S1 and 9.16.8-S1 -> 9.16.21-S1 of BIND Supported Preview Edition, as well as release versions 9.17.0 -> 9.17.18 of the BIND 9.17 development branch, exploitation of broken authoritative servers using a flaw in response processing can cause degradation in BIND resolver performance. The way the lame cache is currently designed makes it possible for its internal data structures to grow almost infinitely, which may cause significant delays in client query processing.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| ISC | BIND9 | Open Source Branches 9.3 through 9.11 9.3.0 through versions before 9.11.36, Open Source Branches 9.12 through 9.16 9.12.0 through versions before 9.16.22, Supported Preview Branches 9.9-S through 9.11-S 9.9.3-S1 through versions before 9.11.36-S1, Supported Preview Branch 9.16-S 9.16.8-S1 through … | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | bind9 | 1:9.17.19-1 | — |
| Debian 13 | bind9 | 1:9.17.19-1 | — |
| Debian 12 | bind9 | 1:9.17.19-1 | — |
| Debian 11 | bind9 | 1:9.16.22-1~deb11u1 | DSA-4994-1 |
| Debian 10 | bind9 | 1:9.11.5.P4+dfsg-5.1+deb10u6 | DSA-4994-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 9 | bind9 | 1:9.10.3.dfsg.P4-12.3+deb9u10 | DLA-2807-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | bind9 | 1:9.16.15-1ubuntu2 | — |
| Ubuntu 20.04 LTS | bind9 | 1:9.16.1-0ubuntu2.9 | USN-5126-1 |
| Ubuntu 18.04 LTS | bind9 | 1:9.11.3+dfsg-1ubuntu1.16 | USN-5126-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 16.04 LTS | bind9 | 1:9.10.3.dfsg.P4-8ubuntu1.19+esm1 | USN-5126-2 |
| Ubuntu Pro 14.04 LTS | bind9 | 1:9.9.5.dfsg-3ubuntu0.19+esm5 | USN-5126-2 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | bind +16 | 32:9.11.36-3.el8 | RHSA-2022:2092 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 8 | bind +16 | 32:9.11.36-3.el8 | ALSA-2022:2092 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 8 | bind | 2:9.11.36-3.el8 | RLSA-2022:2092 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP4 | bind | 9.16.31-150400.5.6.1 | SUSE-SU-2022:2713-1 |
| SLES 15 SP3 | bind | 9.16.6-150300.22.13.1 | SUSE-SU-2022:0151-1 |
| SLES 15 SP2 | bind | 9.16.6-12.57.1 | SUSE-SU-2021:3773-1 |
| SLES 12 SP5 | bind | 9.11.22-3.37.1 | SUSE-SU-2021:3657-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP5 | bind | 9.11.22-3.37.1 | SUSE-SU-2021:3657-1 |
| SUSE Package Hub 15 SP3 | htmldoc | 1.9.12-bp153.2.15.1 | openSUSE-SU-2022:0151-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | bind | 9.16.20-3.1 | openSUSE-SU-2024:11660-1 |
| openSUSE Leap 15.4 | bind | 9.16.31-150400.5.6.1 | SUSE-SU-2022:2713-1 |
| openSUSE Leap 15.3 | bind | 9.16.6-12.57.1 | openSUSE-SU-2022:0151-1, openSUSE-SU-2021:3773-1 |
| openSUSE Leap 15.3 | htmldoc | 1.9.12-bp153.2.15.1 | openSUSE-SU-2022:0151-1 |
| openSUSE Leap 15.2 | bind | 9.16.6-lp152.14.25.1 | openSUSE-SU-2021:1502-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | bind | 9.16.22-r0 | — |
| Alpine v3.23 | bind | 9.16.22-r0 | — |
| Alpine v3.22 | bind | 9.16.22-r0 | — |
| Alpine v3.21 | bind | 9.16.22-r0 | — |
| Alpine v3.20 | bind | 9.16.22-r0 | — |
Show 8 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | bind | 9.16.22-r0 | — |
| Alpine v3.18 | bind | 9.16.22-r0 | — |
| Alpine v3.17 | bind | 9.16.22-r0 | — |
| Alpine v3.16 | bind | 9.16.22-r0 | — |
| Alpine v3.15 | bind | 9.16.22-r0 | — |
| Alpine v3.14 | bind | 9.16.25-r0 | — |
| Alpine v3.13 | bind | 9.16.25-r0 | — |
| Alpine v3.12 | bind | 9.16.27-r0 | — |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 2 (CBL-Mariner) | bind | 9.16.29-1 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | bind +16 | 32:9.11.36-3.el8 | ELSA-2022-2092 |
Advisories 18
- ALSA-2022:2092 Moderate: bind security, bug fix, and enhancement update AlmaLinux Security Advisories · Oct 29, 2026
- USN-5126-2 bind9 vulnerability Ubuntu Security Notices (USN) · Jun 29, 2026
- RHSA-2022:2092 Red Hat Security Advisory: bind security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- USN-5126-1 bind9 vulnerability Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-4994-1 bind9 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-2807-1 bind9 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- RLSA-2022:2092 Moderate: bind security, bug fix, and enhancement update Rocky Linux Security Advisories · Feb 5, 2026
- SUSE-SU-2021:3657-1 Security update for bind SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2021:1502-1 Security update for bind SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:11660-1 bind-9.16.20-3.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:2713-1 Security update for bind SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:0151-1 Security update for bind SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:3773-1 Security update for bind SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2022:0151-1 Security update for bind SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2021:3773-1 Security update for bind SUSE / openSUSE Security Updates · Feb 4, 2026
- ICSA-22-069-09 Siemens SINEC INS CISA ICS & IT advisories · May 6, 2025
- ELSA-2022-2092 Moderate: bind security, bug fix, and enhancement update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · May 17, 2022
- SSA-389290 SSA-389290: Third-Party Component Vulnerabilities in SINEC INS Siemens ProductCERT · Mar 8, 2022
References
- https://kb.isc.org/v1/docs/cve-2021-25219
- DSA-4994 vendor-advisory
- [debian-lts-announce] 20211102 [SECURITY] [DLA 2807-1] bind9 security update mailing-list
- FEDORA-2021-58e7b873b7 vendor-advisory
- FEDORA-2021-39b33260b8 vendor-advisory
- FEDORA-2021-eb8dab50ba vendor-advisory
- https://www.oracle.com/security-alerts/cpuapr2022.html
- https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf
- https://security.netapp.com/advisory/ntap-20211118-0002/
- GLSA-202210-25 vendor-advisory