CVE-2026-61720

A flaw was found in FluidSynth, a software synthesizer. A remote attacker could exploit an unsigned integer underflow vulnerability in the SoundFont 2 SF2 parser by providing a specially crafted SF2 file. This file, containing a zero-sized DMOD chunk, causes the parser to attempt an excessive...

UBUNTU-CVE-2026-61720

FluidSynth is a software synthesizer based on the SoundFont 2 specifications. From 2.5.0 until 2.5.6, the SF2 parser computes the DMOD modulator count as chunk.size / SFMODSIZE - 1 without rejecting chunks smaller than one record. A crafted SF2 file containing a zero-sized DMOD chunk makes the...

CVE-2026-61720 FluidSynth: SF2 DMOD Chunk Unsigned Underflow

FluidSynth is a software synthesizer based on the SoundFont 2 specifications. From 2.5.0 until 2.5.6, the SF2 parser computes the DMOD modulator count as chunk.size / SFMODSIZE - 1 without rejecting chunks smaller than one record. A crafted SF2 file containing a zero-sized DMOD chunk makes the...

Astra Linux – Vulnerability in fluidsynth

Fluidsynth is a software synthesizer based on the SoundFont 2 specifications. A use after free violation was discovered in fluidsynth, which can be triggered when loading an invalid SoundFont file...

Unity Linux 20.1070e Security Update: fluidsynth (UTSA-2026-016723)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-016723 advisory. fluidsynth is a software synthesizer based on the SoundFont 2 specifications. A use after free violation was discovered in fluidsynth, that can be triggered when...

OESA-2026-1068 fluidsynth security update

FluidSynth is a free software synthesizer. Its currently based on the SoundFont 2 specifications and supports real time MIDI effect controls. It can be used as a shared library for embedding in other applications, can play MIDI files and has a command line shell. Many other applications use...

[SECURITY] Fedora 42 Update: fluidsynth-2.5.2-1.fc42

FluidSynth is a real-time software synthesizer based on the SoundFont 2 specifications. It is a "software synthesizer". FluidSynth can read MIDI even ts 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...

[SECURITY] Fedora 43 Update: fluidsynth-2.5.2-1.fc43

FluidSynth is a real-time software synthesizer based on the SoundFont 2 specifications. It is a "software synthesizer". FluidSynth can read MIDI even ts 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...

CVE-2025-68617

FluidSynth is a software synthesizer based on the SoundFont 2 specifications. From versions 2.5.0 to before 2.5.2, a race condition during unloading of a DLS file can trigger a heap-based use-after-free. A concurrently running thread may be pending to unload a DLS file, leading to use of freed...

CVE-2025-68617 Use after free in fluidsynth

FluidSynth is a software synthesizer based on the SoundFont 2 specifications. From versions 2.5.0 to before 2.5.2, a race condition during unloading of a DLS file can trigger a heap-based use-after-free. A concurrently running thread may be pending to unload a DLS file, leading to use of freed...

CVE-2025-68617

FluidSynth is a software synthesizer based on the SoundFont 2 specifications. From versions 2.5.0 to before 2.5.2, a race condition during unloading of a DLS file can trigger a heap-based use-after-free. A concurrently running thread may be pending to unload a DLS file, leading to use of freed...

CVE-2025-68617 Use after free in fluidsynth

FluidSynth is a software synthesizer based on the SoundFont 2 specifications. From versions 2.5.0 to before 2.5.2, a race condition during unloading of a DLS file can trigger a heap-based use-after-free. A concurrently running thread may be pending to unload a DLS file, leading to use of freed...

[SECURITY] Fedora 42 Update: fluidsynth-2.4.8-2.fc42

FluidSynth is a real-time software synthesizer based on the SoundFont 2 specifications. It is a "software synthesizer". FluidSynth can read MIDI even ts 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...

[SECURITY] Fedora 43 Update: fluidsynth-2.4.8-2.fc43

FluidSynth is a real-time software synthesizer based on the SoundFont 2 specifications. It is a "software synthesizer". FluidSynth can read MIDI even ts 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...

[SECURITY] Fedora 41 Update: fluidsynth-2.4.8-2.fc41

FluidSynth is a real-time software synthesizer based on the SoundFont 2 specifications. It is a "software synthesizer". FluidSynth can read MIDI even ts 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...

EUVD-2021-8704

Malicious code in bioql PyPI...

Linux Distros Unpatched Vulnerability : CVE-2021-21417

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - fluidsynth is a software synthesizer based on the SoundFont 2 specifications. A use after free violation was discovered in fluidsynth, that can be triggered whe...

SUSE CVE-2021-21417

fluidsynth is a software synthesizer based on the SoundFont 2 specifications. A use after free violation was discovered in fluidsynth, that can be triggered when loading an invalid SoundFont file...

Mageia: Security Advisory (MGASA-2021-0324)

The remote host is missing an update for the SPDX-FileCopyrightText: 2022 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

FluidSynth: Remote code execution

Background FluidSynth is a real-time synthesizer based on the Soundfont 2 specifications. Description FluidSynth contains a use-after-free in sfloader/fluidsffile.c which occurs when parsing Soundfile 2 files. Impact A remote attacker could entice a user to open a specially crafted Soundfont 2 fi...