Overly broad permissions can turn one compromised account into a much larger security problem. Learn how to reduce unnecessary access, review privileges, and apply least privilege across modern Linux systems. Review Linux Privileges×

Alerts This Week
Warning Icon 1 488
Alerts This Week
Warning Icon 1 488

Fedora 43 dnsx Update Addresses Critical DoS Cross-Site Scripting Issues

fedora
Calendar Grey July 20, 2026
Scroller Fedora
Installing the dnsx update for Fedora 43 resolves multiple critical issues including Denial of Service vulnerabilities.
Update to 1.3.0

Summary

Dnsx is a fast and multi-purpose DNS toolkit allow to run multiple DNS queries

of your choice with a list of user-supplied resolvers.

Update Information:

Update to 1.3.0

Topics%20covered

Topics Covered

security advisory denial of service fedora update important dnsx

Change Log

* Fri Jul 17 2026 Mikel Olasagasti Uranga - 1.3.0-1 - Update to 1.3.0 - Closes rhbz#2420897 * Wed Jul 15 2026 Fedora Release Engineering - 1.2.3-5 - Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild * Mon Feb 2 2026 Maxwell G - 1.2.3-4 - Rebuild for https://fedoraproject.org/wiki/Changes/golang1.26 * Fri Jan 16 2026 Fedora Release Engineering - 1.2.3-3 - Rebuilt for https://fedoraproject.org/wiki/Fedora_44_Mass_Rebuild * Fri Jan 16 2026 Fedora Release Engineering - 1.2.3-2 - Rebuilt for https://fedoraproject.org/wiki/Fedora_44_Mass_Rebuild * Wed Dec 17 2025 Mikel Olasagasti Uranga - 1.2.3-1 - Update to 1.2.3 - Closes rhbz#2420897 * Fri Oct 10 2025 Alejandro Sáez - 1.2.2-6 - rebuild

References


[ 1 ] Bug #2408156 - CVE-2025-58189 dnsx: go crypto/tls ALPN negotiation error contains attacker controlled information [fedora-43] https://bugzilla.redhat.com/show_bug.cgi?id=2408156 [ 2 ] Bug #2409626 - CVE-2025-61723 dnsx: Quadratic complexity when parsing some invalid inputs in encoding/pem [fedora-43] https://bugzilla.redhat.com/show_bug.cgi?id=2409626 [ 3 ] Bug #2410577 - CVE-2025-58185 dnsx: Parsing DER payload can cause memory exhaustion in encoding/asn1 [fedora-43] https://bugzilla.redhat.com/show_bug.cgi?id=2410577 [ 4 ] Bug #2411475 - CVE-2025-58188 dnsx: Panic when validating certificates with DSA public keys in crypto/x509 [fedora-43] https://bugzilla.redhat.com/show_bug.cgi?id=2411475 [ 5 ] Bug #2412680 - CVE-2025-58183 dnsx: Unbounded allocation when parsing GNU sparse map [fedora-43] https://bugzilla.redhat.com/show_bug.cgi?id=2412680 [ 6 ] Bug #2442405 - CVE-2026-1229 dnsx: CIRCL ecc/p384: Incorrect cryptographic c...

Read the Full Advisory

Update Instructions

This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-1c78e384e3' 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
important
Lowest
Low
Medium
High
Critical

Name: dnsx
Product: Fedora 43
Version: 1.3.0
Release: 1.fc43
URL: https://github.com/projectdiscovery/dnsx
Summary: Dnsx is a fast and multi-purpose DNS toolkit

Topics%20covered

Topics Covered

security advisory denial of service fedora update important dnsx

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.