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ubuntu-cve-2021-21417
Vulnerability from osv_ubuntu
Published
2021-04-29 17:15
Modified
2026-04-22 07:39
Summary
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.

Severity
7.2 (High)
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "fluidsynth",
            "binary_version": "1.1.6-2"
          },
          {
            "binary_name": "libfluidsynth1",
            "binary_version": "1.1.6-2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:14.04:LTS",
        "name": "fluidsynth",
        "purl": "pkg:deb/ubuntu/fluidsynth@1.1.6-2?arch=source\u0026distro=trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.1.6-2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "fluidsynth",
            "binary_version": "1.1.6-3"
          },
          {
            "binary_name": "libfluidsynth1",
            "binary_version": "1.1.6-3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "fluidsynth",
        "purl": "pkg:deb/ubuntu/fluidsynth@1.1.6-3?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.1.6-2build1",
        "1.1.6-3"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "fluidsynth",
            "binary_version": "1.1.9-1"
          },
          {
            "binary_name": "libfluidsynth1",
            "binary_version": "1.1.9-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "fluidsynth",
        "purl": "pkg:deb/ubuntu/fluidsynth@1.1.9-1?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "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": "2.1.1-2"
          },
          {
            "binary_name": "libfluidsynth2",
            "binary_version": "2.1.1-2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "fluidsynth",
        "purl": "pkg:deb/ubuntu/fluidsynth@2.1.1-2?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "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": "2.2.5-1"
          },
          {
            "binary_name": "libfluidsynth3",
            "binary_version": "2.2.5-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "fluidsynth",
        "purl": "pkg:deb/ubuntu/fluidsynth@2.2.5-1?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.1.7-1.1",
        "2.2.4-2",
        "2.2.5-1"
      ]
    }
  ],
  "aliases": [],
  "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.",
  "id": "UBUNTU-CVE-2021-21417",
  "modified": "2026-04-22T07:39:54Z",
  "published": "2021-04-29T17:15:00Z",
  "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"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "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": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2021-21417"
  ]
}



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