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Fixes for Malformed IPv6 Addresses in Fedora 44 perl-Net-CIDR-Lite

fedora
Calendar Grey April 25, 2026
Scroller Fedora
The update for Fedora 44 resolves critical issues related to malformed IPv6 handling found in perl-Net-CIDR-Lite.
This update addresses two security issues regarding incorrect handling of malformed IPv6 addresses: Fix IPv4 mapped IPv6 packed length (CVE-2026-40199) Reject invalid uncompressed ...

Summary

Faster alternative to Net::CIDR when merging a large number of CIDR address

ranges. Works for IPv4 and IPv6 addresses.

Update Information:

This update addresses two security issues regarding incorrect handling of malformed IPv6 addresses: Fix IPv4 mapped IPv6 packed length (CVE-2026-40199) Reject invalid uncompressed IPv6 (CVE-2026-40198)

Topics%20covered

Topics Covered

security advisory fedora critical IPv6 issue perl-Net-CIDR-Lite malformed address

Change Log

* Sat Apr 11 2026 Paul Howarth - 0.23-1 - Update to 0.23 - Security: Fix IPv4 mapped IPv6 packed length (CVE-2026-40199) - Security: Reject invalid uncompressed IPv6 (CVE-2026-40198)

References

Fedora Update Notification FEDORA-2026-fe487aa625 2026-04-25 01:21:36.172722+00:00 Name : perl-Net-CIDR-Lite Product : Fedora 44 Version : 0.23 Release : 1.fc44 URL : https://metacpan.org/release/Net-CIDR-Lite Summary : Perl extension for merging IPv4 or IPv6 CIDR addresses Description : Faster alternative to Net::CIDR when merging a large number of CIDR address ranges. Works for IPv4 and IPv6 addresses.

Update Instructions

This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-fe487aa625' 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
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Name: perl-Net-CIDR-Lite
Product: Fedora 44
Version: 0.23
Release: 1.fc44
URL: https://metacpan.org/release/Net-CIDR-Lite
Summary: Perl extension for merging IPv4 or IPv6 CIDR addresses

Topics%20covered

Topics Covered

security advisory fedora critical IPv6 issue perl-Net-CIDR-Lite malformed address

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