CVE-2025-40911

Name	CVE-2025-40911
Description	Net::CIDR::Set versions 0.10 through 0.13 for Perl does not properly handle leading zero characters in IP CIDR address strings, which could allow attackers to bypass access control that is based on IP addresses. Leading zeros are used to indicate octal numbers, which can confuse users who are intentionally using octal notation, as well as users who believe they are using decimal notation. Net::CIDR::Set used code from Net::CIDR::Lite, which had a similar vulnerability CVE-2021-47154.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs	1106699

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
libnet-cidr-set-perl (PTS)	bullseye	0.13-3	vulnerable
	bookworm	0.13-4	vulnerable
	sid, trixie	0.15-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
libnet-cidr-set-perl	source	(unstable)	0.15-1			1106699

Notes

[bookworm] - libnet-cidr-set-perl <no-dsa> (Minor issue)
[bullseye] - libnet-cidr-set-perl <postponed> (Minor issue)
https://lists.security.metacpan.org/cve-announce/msg/29942240/
Fixed by: https://github.com/robrwo/perl-Net-CIDR-Set/commit/be7d91e8446ad8013b08b4be313d666dab003a8a (v0.14)