Fedora 43: MuseScore Critical FluidSynth DoS CVE-2025-56226
fedora
January 12, 2026
This update adds a patch to fix CVE-2025-56225, a flaw in the bundled version of fluidsynth.
Summary
MuseScore is a free cross platform WYSIWYG music notation program. Some
highlights:
* WYSIWYG, notes are entered on a "virtual note sheet"
* Unlimited number of staves
* Up to four voices per staff
* Easy and fast note entry with mouse, keyboard or MIDI
* Integrated sequencer and FluidSynth software synthesizer
* Import and export of MusicXML and Standard MIDI Files (SMF)
* Translated in 26 languages
Update Information:
This update adds a patch to fix CVE-2025-56225, a flaw in the bundled version of fluidsynth.
Topics Covered
Change Log
* Fri Jan 9 2026 Jerry James
References
[ 1 ] Bug #2428300 - CVE-2025-56225 musescore: FluidSynth: Denial of Service via invalid MIDI file processing [fedora-43]
https://bugzilla.redhat.com/show_bug.cgi?id=2428300
Update Instructions
This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-afe4be8cb3' at the command line. For more information, refer to the dnf documentation available at http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label
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Critical
Name: musescore
Product: Fedora 43
Version: 4.6.5
Release: 32.fc43
Summary: Music Composition & Notation Software
Topics Covered
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