Bug 2428293 (CVE-2025-56225)

Summary: CVE-2025-56225 fluidsynth: FluidSynth: Denial of Service via invalid MIDI file processing
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: unspecifiedCC: gtanzill, jbuscemi
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in FluidSynth, a software synthesizer. A local attacker, or an attacker who can trick a user into opening a specially crafted, invalid MIDI (Musical Instrument Digital Interface) file, could trigger a Null pointer dereference. This vulnerability can cause the application to crash, leading to a Denial of Service (DoS).
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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: 2428302, 2428300, 2428301    
Bug Blocks:    

Description OSIDB Bzimport 2026-01-09 17:02:43 UTC
fluidsynth-2.4.6 and earlier versions is vulnerable to Null pointer dereference in fluid_synth_monopoly.c, that can be triggered when loading an invalid midi file.