Description
The DNS packet parsing/generation code in PowerDNS (aka pdns) Authoritative Server 3.4.x before 3.4.6 allows remote attackers to cause a denial of service (crash) via crafted query packets.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| PowerDNS | PowerDNS Authoritative Server | 3.4.x before 3.4.6 | — |
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 | 3.4.6-1 | — |
| Debian 13 | pdns | 3.4.6-1 | — |
| Debian 12 | pdns | 3.4.6-1 | — |
| Debian 8 | pdns | 3.4.1-4+deb8u3 | DSA-3347-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | pdns | 4.0.1-1.2 | openSUSE-SU-2024:10136-1 |
Advisories 2
- DSA-3347-1 pdns - security update Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2024:10136-1 pdns-4.0.1-1.2 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026