Description
PowerDNS Recursor up to and including 4.5.9, 4.6.2 and 4.7.1, when protobuf logging is enabled, has Improper Cleanup upon a Thrown Exception, leading to a denial of service (daemon crash) via a DNS query that leads to an answer with specific properties.
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 | pdns-recursor | 4.7.2-1 | — |
| Debian 13 | pdns-recursor | 4.7.2-1 | — |
| Debian 12 | pdns-recursor | 4.7.2-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 22.04 LTS | pdns-recursor | No fix yet | — |
| Ubuntu Pro 20.04 LTS | pdns-recursor | No fix yet | — |
| Ubuntu Pro 18.04 LTS | pdns-recursor | No fix yet | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 16.04 LTS | pdns-recursor | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SUSE Package Hub 15 SP4 | pdns-recursor | 4.6.3-bp154.2.3.1 | openSUSE-SU-2022:10171-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | pdns-recursor | 4.7.2-1.1 | openSUSE-SU-2024:12281-1 |
| openSUSE Leap 15.4 | pdns-recursor | 4.6.3-bp154.2.3.1 | openSUSE-SU-2022:10171-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | pdns-recursor | 4.7.2-r0 | — |
| Alpine v3.23 | pdns-recursor | 4.7.2-r0 | — |
| Alpine v3.22 | pdns-recursor | 4.7.2-r0 | — |
| Alpine v3.21 | pdns-recursor | 4.7.2-r0 | — |
| Alpine v3.20 | pdns-recursor | 4.7.2-r0 | — |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | pdns-recursor | 4.7.2-r0 | — |
| Alpine v3.18 | pdns-recursor | 4.7.2-r0 | — |
| Alpine v3.17 | pdns-recursor | 4.7.2-r0 | — |
| Alpine v3.16 | pdns-recursor | 4.6.3-r0 | — |
Advisories 3
- openSUSE-SU-2024:12281-1 pdns-recursor-4.7.2-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2022:10171-1 Security update for pdns-recursor SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2022-1152 PowerDNS: Schwachstelle ermöglicht Denial of Service BSI CERT-Bund (WID) · Apr 4, 2023