Bug 2418749

Summary: CVE-2025-66293 libpng15: LIBPNG out-of-bounds read in png_image_read_composite [fedora-43]
Product: [Fedora] Fedora Reporter: Jon Moroney <jmoroney>
Component: libpng15Assignee: Nikola Forró <nforro>
Status: CLOSED NOTABUG QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: high Docs Contact:
Priority: high    
Version: 43CC: mhlavink, mmuzila, nforro, phracek
Target Milestone: ---Keywords: Security, SecurityTracking
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["e511027f-ca8c-4dfd-a61b-d0213b720309"]}
Fixed In Version: Doc Type: ---
Doc Text:
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Clone Of: Environment:
Last Closed: 2025-12-04 21:01:46 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: 2418711    

Description Jon Moroney 2025-12-03 22:28:22 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.

The following link provides references to all essential vulnerability management information. If something is wrong or missing, please contact a member of PSIRT.
https://spaces.redhat.com/display/PRODSEC/Vulnerability+Management+-+Essential+Documents+for+Engineering+Teams
Comment 1 Michal Hlavinka 2025-12-04 21:01:46 UTC 
As noted in https://github.com/pnggroup/libpng/security/advisories/GHSA-9mpm-9pxh-mg4f affected code is part of the simplified API that has been added in 1.6.0, older versions do not carry this code and are not affected