Bug 2443387

Summary:	CVE-2021-4456 perl-Net-CIDR: mishandling of leading zeros in IP CIDR addresses [fedora-all]
Product:	[Fedora] Fedora	Reporter:	Guilherme de Almeida Suckevicz <gsuckevi>
Component:	perl-Net-CIDR	Assignee:	Emmanuel Seyman <emmanuel>
Status:	CLOSED ERRATA	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	42	CC:	emmanuel, paul, perl-devel
Target Milestone:	---	Keywords:	Security, SecurityTracking
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:	{"flaws": ["c6d84d3b-1372-4c25-b358-ab3651e11577"]}
Fixed In Version:	perl-Net-CIDR-0.27-1.fc42	Doc Type:	---
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2026-03-10 01:09:35 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	2443232

Description Guilherme de Almeida Suckevicz 2026-02-27 18:40:58 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.

Comment 1 Emmanuel Seyman 2026-03-01 09:21:27 UTC

The only impacted version of Fedora seems to be F42.
I'll rebase to the current version of the package.

Comment 2 Fedora Update System 2026-03-01 09:42:09 UTC

FEDORA-2026-baf8782c7a (perl-Net-CIDR-0.27-1.fc42) has been submitted as an update to Fedora 42.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-baf8782c7a

Comment 3 Fedora Update System 2026-03-02 01:40:14 UTC

FEDORA-2026-baf8782c7a has been pushed to the Fedora 42 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-baf8782c7a`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-baf8782c7a

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

Comment 4 Fedora Update System 2026-03-10 01:09:35 UTC

FEDORA-2026-baf8782c7a (perl-Net-CIDR-0.27-1.fc42) has been pushed to the Fedora 42 stable repository.
If problem still persists, please make note of it in this bug report.