{"id":"UBUNTU-CVE-2021-21417","details":"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.","modified":"2026-04-22T14:33:45.949811Z","published":"2021-04-29T17:15:00Z","upstream":["CVE-2021-21417"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-21417"},{"type":"REPORT","url":"https://github.com/FluidSynth/fluidsynth/issues/808"},{"type":"REPORT","url":"https://github.com/FluidSynth/fluidsynth/security/advisories/GHSA-6fcq-pxhc-jxc9"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2021-21417"}],"affected":[{"package":{"name":"fluidsynth","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/fluidsynth@1.1.6-2?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.6-2"],"ecosystem_specific":{"binaries":[{"binary_name":"fluidsynth","binary_version":"1.1.6-2"},{"binary_name":"libfluidsynth1","binary_version":"1.1.6-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-21417.json"}},{"package":{"name":"fluidsynth","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/fluidsynth@1.1.6-3?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.6-2build1","1.1.6-3"],"ecosystem_specific":{"binaries":[{"binary_name":"fluidsynth","binary_version":"1.1.6-3"},{"binary_name":"libfluidsynth1","binary_version":"1.1.6-3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-21417.json"}},{"package":{"name":"fluidsynth","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/fluidsynth@1.1.9-1?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.6-4","1.1.8-1","1.1.8-2","1.1.8-3","1.1.9-1"],"ecosystem_specific":{"binaries":[{"binary_name":"fluidsynth","binary_version":"1.1.9-1"},{"binary_version":"1.1.9-1","binary_name":"libfluidsynth1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-21417.json"}},{"package":{"name":"fluidsynth","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/fluidsynth@2.1.1-2?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.11-4","1.1.11-4ubuntu1","2.1.0-1","2.1.1-2"],"ecosystem_specific":{"binaries":[{"binary_name":"fluidsynth","binary_version":"2.1.1-2"},{"binary_name":"libfluidsynth2","binary_version":"2.1.1-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-21417.json"}},{"package":{"name":"fluidsynth","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/fluidsynth@2.2.5-1?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.1.7-1.1","2.2.4-2","2.2.5-1"],"ecosystem_specific":{"binaries":[{"binary_name":"fluidsynth","binary_version":"2.2.5-1"},{"binary_name":"libfluidsynth3","binary_version":"2.2.5-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-21417.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}