Bug 2522067

Summary: CVE-2026-77652 dia: dia: heap buffer overflow in WPG colormap parser via out-of-bounds palette index [epel-all]
Product: [Fedora] Fedora EPEL Reporter: Ganesh <gnaik>
Component: diaAssignee: Robert Scheck <redhat-bugzilla>
Status: NEW --- QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: high Docs Contact:
Priority: high    
Version: epel10CC: huzaifas, redhat-bugzilla
Target Milestone: ---Keywords: Security, SecurityTracking
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Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["fcce83b8-ac4c-4e48-b1e9-67a3e7fcdbcc"]}
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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: 2520884    

Description Ganesh 2026-08-24 16:41:26 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 flaw was found in Dia's WPG (WordPerfect Graphics) import plugin. When parsing a WPG COLORMAP record, the colormap start index and entry count taken from the file are not validated against the fixed 256-entry palette buffer. A crafted WPG file can cause a heap-based buffer overflow in plug-ins/wpg/wpg-import.c, leading to memory corruption, application crash, and potentially arbitrary code execution if a victim opens the malicious file in Dia. Upstream GitLab issue #580 was closed without a fix.