Bug 2562404

Summary: CVE-2026-115824 perl-Starman: perl-starman: Denial of Service via unbounded buffering of chunked request bodies [fedora-43]
Product: [Fedora] Fedora Reporter: Oleg Sushchenko <osushche>
Component: perl-StarmanAssignee: Emmanuel Seyman <emmanuel>
Status: ON_QA --- QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: high Docs Contact:
Priority: high    
Version: 43CC: emmanuel, perl-devel
Target Milestone: ---Keywords: Security, SecurityTracking
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Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["254111af-112b-4ee8-8b24-d82a873123a9"]}
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Bug Depends On:    
Bug Blocks: 2560482    

Description Oleg Sushchenko 2026-10-27 20:38:35 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.

Starman versions before 0.4019 for Perl allow memory exhaustion via unbounded buffering of chunked request bodies.

The chunked body decoder keeps each chunk in memory until the whole chunk and its CRLF have arrived, and sets no limit on the length of a chunk-size line. A client that declares a huge chunk size and streams data, or sends a chunk-size line that never ends, grows the buffer for as long as it keeps sending.

A remote attacker can exhaust worker memory with a single connection.
Comment 1 Fedora Update System 2026-10-28 08:21:23 UTC 
FEDORA-2026-a2df1dfb37 (perl-Starman-0.4019-1.fc43) has been submitted as an update to Fedora 43.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-a2df1dfb37
Comment 2 Fedora Update System 2026-10-29 02:20:59 UTC 
FEDORA-2026-a2df1dfb37 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-a2df1dfb37`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-a2df1dfb37

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