Bug 2561450 (CVE-2026-116731)

Summary: CVE-2026-116731 furnace: Furnace: Denial of Service via out-of-bounds write during FamiTracker module parsing
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in Furnace. The application does not properly validate subsong indices when parsing FamiTracker module files, leading to an out-of-bounds write. By convincing a user to open a specially crafted file, an attacker can corrupt memory and cause the application to crash, resulting in a Denial of Service (DoS).
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Description OSIDB Bzimport 2026-10-26 22:33:36 UTC
Furnace through 0.6.8.3 contains an out-of-bounds write vulnerability in DivEngine::loadFTM() that allows attackers to corrupt heap memory via an unchecked subsong index in the GROOVES block. Attackers can craft a FamiTracker module with a subsong count of 2 or more to write a groove pattern past the subsong vector, crashing Furnace when opened.