Back Linuxsecurity Fedora 42: Fluidsynth Important Race Condition CVE-2025
FluidSynth is a real-time software synthesizer based on the SoundFont 2 specifications. It is a "software synthesizer". FluidSynth can read MIDI events from the MIDI input device and render them to the audio device. It features real-time effect modulation using SoundFont 2.01 modulators, and a built-in command line shell. It can also play MIDI files (note: FluidSynth was previously called IIWU Synth). Update Information : Update to 2.5.2 Fix for CVE-2025-68617
FluidSynth is a real-time software synthesizer based on the SoundFont 2
specifications. It is a "software synthesizer". FluidSynth can read MIDI events
from the MIDI input device and render them to the audio device. It features
real-time effect modulation using SoundFont 2.01 modulators, and a built-in
command line shell. It can also play MIDI files (note: FluidSynth was previously
Update to 2.5.2 Fix for CVE-2025-68617
* Wed Dec 24 2025 Christoph Karl - 2.5.2-1 - Update to 2.5.2 - Fix for CVE-2025-68617
* Wed Dec 24 2025 Christoph Karl - 2.5.2-1 - Update to 2.5.2 - Fix for CVE-2025-68617
[ 1 ] Bug #2424828 - CVE-2025-68617 fluidsynth: FluidSynth: Race Condition in DLS Unloading Allows Code Execution and Privilege Escalation [epel-10] [ 2 ] Bug #2424831 - CVE-2025-68617 fluidsynth: FluidSynth: Race Condition in DLS Unloading Allows Code Execution and Privilege Escalation [fedora-42] [ 3 ] Bug #2424833 - CVE-2025-68617 fluidsynth: FluidSynth: Race Condition in DLS Unloading Allows Code Execution and Privilege Escalation [fedora-43] [ 4 ] Bug #2424835 - CVE-2025-68617 fluidsynth: FluidSynth: Race Condition in DLS Unloading Allows Code Execution and Privilege Escalation [epel-9]
[ 1 ] Bug #2424828 - CVE-2025-68617 fluidsynth: FluidSynth: Race Condition in DLS Unloading Allows Code Execution and Privilege Escalation [epel-10] [ 2 ] Bug #2424831 - CVE-2025-68617 fluidsynth: FluidSynth: Race Condition in DLS Unloading Allows Code Execution and Privilege Escalation [fedora-42] [ 3 ] Bug #2424833 - CVE-2025-68617 fluidsynth: FluidSynth: Race Condition in DLS Unloading Allows Code Execution and Privilege Escalation [fedora-43] [ 4 ] Bug #2424835 - CVE-2025-68617 fluidsynth: FluidSynth: Race Condition in DLS Unloading Allows Code Execution and Privilege Escalation [epel-9]
This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2025-202d079b40' at the command line. For more information, refer to the dnf documentation available at
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