CVE-2026-61721
HIGH
8,0
Source: [email protected]
Attack Vector: local
Attack Complexity: low
Privileges Required: none
User Interaction: none
Scope: unchanged
Confidentiality: high
Integrity: low
Availability: high
Description
AI Translation Available
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.
122
Heap-based Buffer Overflow
DraftCommon Consequences
Security Scopes Affected:
Availability
Integrity
Confidentiality
Access Control
Other
Potential Impacts:
Dos: Crash, Exit, Or Restart
Dos: Resource Consumption (Cpu)
Dos: Resource Consumption (Memory)
Execute Unauthorized Code Or Commands
Bypass Protection Mechanism
Modify Memory
Other
Applicable Platforms
Languages:
Memory-Unsafe, C, C++
125
Out-of-bounds Read
DraftCommon Consequences
Security Scopes Affected:
Confidentiality
Availability
Other
Potential Impacts:
Read Memory
Bypass Protection Mechanism
Dos: Crash, Exit, Or Restart
Varies By Context
Applicable Platforms
Languages:
Memory-Unsafe, C, C++
Technologies:
ICS/OT
https://github.com/FluidSynth/fluidsynth/commit/2354c2a9acdb26de7cdcd37c903ee10…
https://github.com/FluidSynth/fluidsynth/releases/tag/v2.5.6
https://github.com/FluidSynth/fluidsynth/security/advisories/GHSA-59ph-rx8r-8p4j