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Fedora 43 pdns-recursor Update Mitigates DNS Poisoning Threats Effectively

fedora
Calendar Grey July 3, 2026
Dist Fedora Esm H88
Fedora 43 pdns-recursor update fixes critical DNS caching issues impacting network security.
update to latest upstream release to fix CVEs

Summary

PowerDNS Recursor is a non authoritative/recursing DNS server. Use this

package if you need a dns cache for your network.

Update Information:

update to latest upstream release to fix CVEs

Topics%20covered

Topics Covered

security advisory fedora update dns poisoning CVE recursor

Change Log

* Thu Jun 25 2026 Filipe Rosset - 5.2.11-1 - update to 5.2.11 fixes rhbz#2492868 - a bunch of other bugs were fixed and will be backported to all supported Fedora / EPEL versions

References


[ 1 ] Bug #2438157 - CVE-2025-59023 pdns-recursor: crafted delegations or IP fragments can poison cached delegations [fedora-43] https://bugzilla.redhat.com/show_bug.cgi?id=2438157 [ 2 ] Bug #2438176 - CVE-2025-59024 pdns-recursor: crafted delegations or IP fragments can poison cached delegations [fedora-43] https://bugzilla.redhat.com/show_bug.cgi?id=2438176 [ 3 ] Bug #2438180 - CVE-2026-0398 pdns-recursor: crafted zones can lead to increased resource usage and crafted CNAME chains can lead to cache poisoning [fedora-43] https://bugzilla.redhat.com/show_bug.cgi?id=2438180

Update Instructions

This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-34cca3d390' at the command line. For more information, refer to the dnf documentation available at http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label

Severity
critical
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Name: pdns-recursor
Product: Fedora 43
Version: 5.2.11
Release: 1.fc43
URL: https://powerdns.com
Summary: Modern, advanced and high performance recursing/non authoritative name server

Topics%20covered

Topics Covered

security advisory fedora update dns poisoning CVE recursor

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