CVE-2026-61721 (GCVE-0-2026-61721)
Vulnerability from cvelistv5
Published
2026-09-18 20:00
Modified
2026-09-18 20:21
Severity ?
8.0 (High) - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H
CWE
Summary
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.loop_start and wsmp.loop_length values to samples without calling fluid_sample_validate() or fluid_sample_sanitize_loop(). A crafted DLS file can place sample loop points beyond the sample buffer, causing out-of-bounds reads during audio rendering, undefined behavior, possible memory disclosure, and denial of service. Builds compiled with the CMake option enable-native-dls set to OFF do not expose the affected parser. This issue is fixed in version 2.5.6.
References
Impacted products
Vendor Product Version
FluidSynth fluidsynth Version: >= 2.5.0, < 2.5.6
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