Description
An attacker can leverage this flaw to gradually erode available memory to the point where named crashes for lack of resources. Upon restart the attacker would have to begin again, but nevertheless there is the potential to deny service.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| ISC | BIND9 | Open Source Branch 9.18 9.18.0 through versions before 9.18.7, Development Branch 9.19 9.19.0 through versions before 9.19.5 | — |
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 | 1:9.18.7-1 | — |
| Debian 13 | bind9 | 1:9.18.7-1 | — |
| Debian 12 | bind9 | 1:9.18.7-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | bind9 | 1:9.18.1-1ubuntu1.2 | USN-5626-1 |
| Ubuntu 20.04 LTS | bind9 | 1:9.16.1-0ubuntu2.11 | USN-5626-1 |
| Ubuntu 18.04 LTS | bind9 | 1:9.11.3+dfsg-1ubuntu1.18 | USN-5626-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | bind | 9.18.7-1.1 | openSUSE-SU-2024:12356-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | bind | 9.18.7-r0 | — |
| Alpine v3.23 | bind | 9.18.7-r0 | — |
| Alpine v3.22 | bind | 9.18.7-r0 | — |
| Alpine v3.21 | bind | 9.18.7-r0 | — |
| Alpine v3.20 | bind | 9.18.7-r0 | — |
Show 7 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | bind | 9.18.7-r0 | — |
| Alpine v3.18 | bind | 9.18.7-r0 | — |
| Alpine v3.17 | bind | 9.18.7-r0 | — |
| Alpine v3.16 | bind | 9.16.33-r0 | — |
| Alpine v3.15 | bind | 9.16.33-r0 | — |
| Alpine v3.14 | bind | 9.16.33-r0 | — |
| Alpine v3.13 | bind | 9.16.33-r0 | — |
Advisories 3
- USN-5626-1 bind9 vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- openSUSE-SU-2024:12356-1 bind-9.18.7-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2022-1492 Internet Systems Consortium BIND: Mehrere Schwachstellen ermöglichen Denial of Service BSI CERT-Bund (WID) · Jan 6, 2026