CVE-2026-61721

FluidSynth versions 2.5.0 through 2.5.6 contain a heap-based buffer overrun in the native DLS loader . File-controlled wsmp.loop_start and wsmp.loop_length values are assigned to samples without calling fluid_sample_validate() or fluid_sample_sanitize_loop(), allowing a crafted DLS file to place ...

CVE-2026-61721

FluidSynth is a software synthesizer based on the SoundFont 2 specifications. From 2.5.0 until 2.5.6, the native DLS loader assigns file-controlled wsmp.loopstart and wsmp.looplength values to samples without calling fluidsamplevalidate or fluidsamplesanitizeloop. A crafted DLS file can place...

CVE-2026-61721 FluidSynth: Heap-based buffer overrun for DLS samples

FluidSynth is a software synthesizer based on the SoundFont 2 specifications. From 2.5.0 until 2.5.6, the native DLS loader assigns file-controlled wsmp.loopstart and wsmp.looplength values to samples without calling fluidsamplevalidate or fluidsamplesanitizeloop. A crafted DLS file can place...

CVE-2026-61721 FluidSynth: Heap-based buffer overrun for DLS samples

FluidSynth is a software synthesizer based on the SoundFont 2 specifications. From 2.5.0 until 2.5.6, the native DLS loader assigns file-controlled wsmp.loopstart and wsmp.looplength values to samples without calling fluidsamplevalidate or fluidsamplesanitizeloop. A crafted DLS file can place...

CVE-2026-61723: Integer Overflow or Wraparound

FluidSynth is a software synthesizer based on the SoundFont 2 specifications. From 2.5.0 until 2.5.6, the native DLS parser validates ptbl chunks with the unsigned expression cues 4 + cbsize without checking whether the multiplication and addition fit in 32 bits. A crafted DLS file can supply a...

CVE-2026-61722: Integer Overflow or Wraparound

FluidSynth is a software synthesizer based on the SoundFont 2 specifications. From 2.5.0 until 2.5.6, the native DLS parser validates articulation chunks using the unsigned expression cbsize + connblocks 12 without first ensuring that the multiplication and addition fit in 32 bits. A crafted DLS...

CVE-2026-61721: Heap-based Buffer Overflow

FluidSynth is a software synthesizer based on the SoundFont 2 specifications. From 2.5.0 until 2.5.6, the native DLS loader assigns file-controlled wsmp.loopstart and wsmp.looplength values to samples without calling fluidsamplevalidate or fluidsamplesanitizeloop. A crafted DLS file can place...

OESA-2026-3167 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...

CVE-2018-18197

An issue was discovered in libgig 4.1.0. There is an operator new failure due to a big pSampleLoops heap request in DLS::Sampler::Sampler in DLS.cpp...

CVE-2018-18193

An issue was discovered in libgig 4.1.0. There is operator new failure due to a big pWavePoolTable heap request in DLS::File::File in DLS.cpp...

CVE-2018-18194

An issue was discovered in libgig 4.1.0. There is a heap-based buffer over-read in DLS::Region::GetSample in DLS.cpp...

SUSE 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...

Linux Distros Unpatched Vulnerability : CVE-2025-68617

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. From versions 2.5.0 to before 2.5.2, a race condition during unloading of a DLS fi...

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...

DEBIAN-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

CVE-2025-68617 – FluidSynth: A race condition during unloading of a DLS file can trigger a heap-based use-after-free in FluidSynth versions 2.5.0 to before 2.5.2. If a DLS unload is concurrent with synthesizer destruction or if samples from the unloaded DLS are used by active voices, freed memory...

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: Use After Free

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-2025-12149

In CVE-2025-12149, Search Guard FLX ≤3.1.2 fails to enforce Document-Level Security when a Signals-watch triggers a search, potentially allowing access to all documents in the queried indices. Affected component: Search Guard FLX; root cause: DLS enforcement gap specific to Signals-triggered sear...