CVE-2025-68617

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{"affected": [{"affectedData": [{"product": "fluidsynth", "vendor": "FluidSynth", "versions": [{"status": "affected", "version": ">= 2.5.0, < 2.5.2"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:fluidsynth:fluidsynth:*:*:*:*:*:*:*:*", "matchCriteriaId": "2FC707E6-47FF-47FE-83A7-B93AA1364D07", "versionEndExcluding": "2.5.2", "versionStartIncluding": "2.5.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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 memory, if the synthesizer is being concurrently destroyed, or samples of the (unloaded) DLS file are concurrently used to synthesize audio. This issue has been patched in version 2.5.2. The problem will not occur, when explicitly unloading a DLS file (before synth destruction), provided that at the time of unloading, no samples of the respective file are used by active voices. The problem will not occur in versions of FluidSynth that have been compiled without native DLS support."}, {"lang": "es", "value": "FluidSynth es un sintetizador de software basado en las especificaciones SoundFont?2. Desde la versi\u00f3n 2.5.0 hasta versiones anteriores a la 2.5.2, una condici\u00f3n de carrera durante la descarga de un archivo DLS puede provocar un uso despu\u00e9s de liberaci\u00f3n basado en el heap. Un hilo que se ejecuta simult\u00e1neamente puede quedar pendiente de descargar un archivo DLS, lo que lleva al uso de memoria liberada, si el sintetizador se destruye concurrentemente, o si las muestras del archivo DLS (descargado) se utilizan simult\u00e1neamente para sintetizar audio. Este problema se corrigi\u00f3 en la versi\u00f3n 2.5.2. El problema no se producir\u00e1 al descargar expl\u00edcitamente un archivo DLS (antes de la destrucci\u00f3n del sintetizador), siempre que, en el momento de la descarga, no se est\u00e9n usando muestras del archivo respectivo en voces activas. El problema tampoco se producir\u00e1 en versiones de FluidSynth que se hayan compilado sin soporte nativo para DLS."}], "id": "CVE-2025-68617", "lastModified": "2026-10-19T22:10:00.130", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.0, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.0, "impactScore": 5.9, "source": "security-advisories@github.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.0, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.0, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-68617", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2025-12-24T14:53:30.321128Z", "version": "2.0.3"}}]}, "published": "2025-12-23T23:15:44.757", "references": [{"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/FluidSynth/fluidsynth/commit/685e54cdc44911ace31774260bd0c9ec89887491"}, {"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/FluidSynth/fluidsynth/commit/962b9946b5cb6b16f0c08b89dd1b7016d4fce886"}, {"source": "security-advisories@github.com", "tags": ["Exploit", "Issue Tracking"], "url": "https://github.com/FluidSynth/fluidsynth/issues/1717"}, {"source": "security-advisories@github.com", "tags": ["Issue Tracking"], "url": "https://github.com/FluidSynth/fluidsynth/issues/1728"}, {"source": "security-advisories@github.com", "tags": ["Vendor Advisory"], "url": "https://github.com/FluidSynth/fluidsynth/security/advisories/GHSA-ffw2-xvvp-39ch"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Exploit", "Issue Tracking"], "url": "https://github.com/FluidSynth/fluidsynth/issues/1717"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Issue Tracking"], "url": "https://github.com/FluidSynth/fluidsynth/issues/1728"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-416"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

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