Bug 2565454

Summary: CVE-2026-119719 blender: blender: Arbitrary code execution via thumbnail extractor integer overflow [epel-9]
Product: [Fedora] Fedora EPEL Reporter: Ganesh <gnaik>
Component: blenderAssignee: Luya Tshimbalanga <luya_tfz>
Status: NEW --- QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: high Docs Contact:
Priority: high    
Version: epel9CC: code, design-devel, epel-packagers-sig, gang65, luya_tfz, multimedia-sig, negativo17, rocm-packagers-sig, Tom.Rix
Target Milestone: ---Keywords: Security, SecurityTracking
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["e30f2a6a-6481-4df2-97c2-bfc429df90cb"]}
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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: 2564160    

Description Ganesh 2026-11-03 02:06:28 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.

Blender before 4.5.15 and 5.x before 5.2.3 contains a heap buffer overflow vulnerability in the blend file thumbnail extractor caused by 32-bit integer overflow in thumb_data_vertical_flip(). Attackers can craft a .blend file with malicious TEST block dimensions that trigger an out-of-bounds write when blender-thumbnailer or the Windows shell extension previews it, causing crashes or code execution.