Bug 2506753 - CVE-2026-52684 pdns-recursor: prefetch feature allows persistent ghost domain cache poisoning attack [fedora-all]
Summary: CVE-2026-52684 pdns-recursor: prefetch feature allows persistent ghost domain...
Keywords:
Status: ON_QA
Alias: None
Product: Fedora
Classification: Fedora
Component: pdns-recursor
Version: rawhide
Hardware: Unspecified
OS: Unspecified
low
low
Target Milestone: ---
Assignee: Filipe Rosset
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: {"flaws": ["b6dc092c-08a0-46f8-ba09-f...
Depends On:
Blocks: CVE-2026-52684
TreeView+ depends on / blocked
 
Reported: 2026-07-24 14:58 UTC by Guilherme de Almeida Suckevicz
Modified: 2026-08-09 01:58 UTC (History)
3 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Type: ---
Embargoed:


Attachments (Terms of Use)

Description Guilherme de Almeida Suckevicz 2026-07-24 14:58:52 UTC
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

If the auth responds very slowly and the records expire in between, the capping of TTLs is not enforced for lack of data. This does not happen on regular resolve as then then the 
child records are used immediately if not expired and thus valid, or the
 records are expired, and in that case not used.  So this case 
can only happen if almost expired records are used to refresh the 
authoritative NS records.

Comment 1 Fedora Update System 2026-08-08 00:17:26 UTC
FEDORA-2026-ac51ed6e75 (pdns-recursor-5.2.13-1.fc43) has been submitted as an update to Fedora 43.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-ac51ed6e75

Comment 2 Fedora Update System 2026-08-08 00:17:27 UTC
FEDORA-EPEL-2026-3afb49ff26 (pdns-recursor-5.4.5-2.el10_2) has been submitted as an update to Fedora EPEL 10.2.
https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-3afb49ff26

Comment 3 Fedora Update System 2026-08-08 00:17:28 UTC
FEDORA-2026-707054d631 (pdns-recursor-5.4.5-2.fc44) has been submitted as an update to Fedora 44.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-707054d631

Comment 4 Fedora Update System 2026-08-09 01:24:15 UTC
FEDORA-EPEL-2026-6aa47fdac2 has been pushed to the Fedora EPEL 10.3 testing repository.

You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-6aa47fdac2

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 5 Fedora Update System 2026-08-09 01:36:53 UTC
FEDORA-EPEL-2026-3afb49ff26 has been pushed to the Fedora EPEL 10.2 testing repository.

You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-3afb49ff26

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 6 Fedora Update System 2026-08-09 01:40:14 UTC
FEDORA-2026-707054d631 has been pushed to the Fedora 44 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-707054d631`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-707054d631

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 7 Fedora Update System 2026-08-09 01:58:41 UTC
FEDORA-2026-ac51ed6e75 has been pushed to the Fedora 43 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-ac51ed6e75`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-ac51ed6e75

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.


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