Description
An issue has been found in the DNSSEC parsing code of PowerDNS Recursor from 4.0.0 up to and including 4.0.6 leading to a memory leak when parsing specially crafted DNSSEC ECDSA keys. These keys are only parsed when validation is enabled by setting dnssec to a value other than off or process-no-validate (default).
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| PowerDNS | PowerDNS Recursor | from 4.0.0 up to and including 4.0.6 | — |
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-recursor | 4.0.7-1 | — |
| Debian 13 | pdns-recursor | 4.0.7-1 | — |
| Debian 12 | pdns-recursor | 4.0.7-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 16.04 LTS | pdns-recursor | No fix yet | — |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | pdns-recursor | 4.5.5-1.3 | openSUSE-SU-2024:11157-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | pdns-recursor | 4.0.7-r0 | — |
| Alpine v3.23 | pdns-recursor | 4.0.7-r0 | — |
| Alpine v3.22 | pdns-recursor | 4.0.7-r0 | — |
| Alpine v3.21 | pdns-recursor | 4.0.7-r0 | — |
| Alpine v3.20 | pdns-recursor | 4.0.7-r0 | — |
Show 13 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | pdns-recursor | 4.0.7-r0 | — |
| Alpine v3.18 | pdns-recursor | 4.0.7-r0 | — |
| Alpine v3.17 | pdns-recursor | 4.0.7-r0 | — |
| Alpine v3.16 | pdns-recursor | 4.0.7-r0 | — |
| Alpine v3.15 | pdns-recursor | 4.0.7-r0 | — |
| Alpine v3.14 | pdns-recursor | 4.0.7-r0 | — |
| Alpine v3.13 | pdns-recursor | 4.0.7-r0 | — |
| Alpine v3.12 | pdns-recursor | 4.0.7-r0 | — |
| Alpine v3.11 | pdns-recursor | 4.0.7-r0 | — |
| Alpine v3.10 | pdns-recursor | 4.0.7-r0 | — |
| Alpine v3.9 | pdns-recursor | 4.0.7-r0 | — |
| Alpine v3.8 | pdns-recursor | 4.0.7-r0 | — |
| Alpine v3.7 | pdns-recursor | 4.0.7-r0 | — |
Advisories 1
- openSUSE-SU-2024:11157-1 pdns-recursor-4.5.5-1.3 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026