Bug 2533003

Summary: CVE-2026-87933 dcm2niix: cJSON: Memory corruption via use after free in cJSONUtils_MergePatch [fedora-all]
Product: [Fedora] Fedora Reporter: Marian Rehak <mrehak>
Component: dcm2niixAssignee: Ankur Sinha (FranciscoD) <sanjay.ankur>
Status: NEW --- QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: high Docs Contact:
Priority: high    
Version: rawhideCC: alciregi, igor.raits, neuro-sig, sanjay.ankur
Target Milestone: ---Keywords: Security, SecurityTracking
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["30e7c73d-9e21-44d5-954f-29d7c1c752d2"]}
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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: 2531215    

Description Marian Rehak 2026-09-14 11:51:11 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.

A vulnerability was found in DaveGamble cJSON up to 1.7.19. The affected element is the function cJSONUtils_MergePatch of the file cJSON_Utils.c. The manipulation results in use after free. The attack may be launched remotely. The exploit has been made public and could be used. The pull request to fix this issue awaits acceptance.