USN-8885-1 (UBUNTU-CVE-2026-58264)
Vulnerability from osv_ubuntu – Published: 2026-10-06 15:45 – Updated: 2026-10-06 15:45 – Source website
VLAI
Summary
fluidsynth vulnerabilities
Details
It was discovered that FluidSynth did not properly validate the channel argument of the pitch_bend_range command. A remote attacker could possibly use this issue to cause FluidSynth to crash, resulting in a denial of service, or execute arbitrary code. (CVE-2026-58264)
It was discovered that FluidSynth incorrectly handled configurations with more than 16 MIDI channels in its MIDI player, leading to a heap buffer overflow. An attacker could possibly use this issue to cause FluidSynth to crash, resulting in a denial of service, or execute arbitrary code. This issue only affected Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS. (CVE-2026-61714)
References
| URL | Type | |
|---|---|---|
{
"affected": [
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2026-58264",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:Pro:14.04:LTS"
}
},
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "fluidsynth",
"binary_version": "1.1.6-2ubuntu0.1~esm1"
},
{
"binary_name": "libfluidsynth1",
"binary_version": "1.1.6-2ubuntu0.1~esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:14.04:LTS",
"name": "fluidsynth",
"purl": "pkg:deb/ubuntu/fluidsynth@1.1.6-2ubuntu0.1~esm1?arch=source\u0026distro=esm-infra-legacy/trusty"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.1.6-2ubuntu0.1~esm1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.1.6-2"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2026-58264",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:Pro:16.04:LTS"
}
},
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "fluidsynth",
"binary_version": "1.1.6-3ubuntu0.1~esm1"
},
{
"binary_name": "libfluidsynth1",
"binary_version": "1.1.6-3ubuntu0.1~esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:16.04:LTS",
"name": "fluidsynth",
"purl": "pkg:deb/ubuntu/fluidsynth@1.1.6-3ubuntu0.1~esm1?arch=source\u0026distro=esm-apps-legacy/xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.1.6-3ubuntu0.1~esm1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.1.6-2build1",
"1.1.6-3"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2026-58264",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:Pro:18.04:LTS"
}
},
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "fluidsynth",
"binary_version": "1.1.9-1ubuntu0.1~esm1"
},
{
"binary_name": "libfluidsynth1",
"binary_version": "1.1.9-1ubuntu0.1~esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:18.04:LTS",
"name": "fluidsynth",
"purl": "pkg:deb/ubuntu/fluidsynth@1.1.9-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.1.9-1ubuntu0.1~esm1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.1.6-4",
"1.1.8-1",
"1.1.8-2",
"1.1.8-3",
"1.1.9-1"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2026-58264",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:Pro:20.04:LTS"
}
},
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "fluidsynth",
"binary_version": "2.1.1-2ubuntu0.1~esm1"
},
{
"binary_name": "libfluidsynth2",
"binary_version": "2.1.1-2ubuntu0.1~esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:20.04:LTS",
"name": "fluidsynth",
"purl": "pkg:deb/ubuntu/fluidsynth@2.1.1-2ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.1.1-2ubuntu0.1~esm1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.1.11-4",
"1.1.11-4ubuntu1",
"2.1.0-1",
"2.1.1-2"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2026-58264",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2026-61714",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:Pro:22.04:LTS"
}
},
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "fluidsynth",
"binary_version": "2.2.5-1ubuntu0.1~esm1"
},
{
"binary_name": "libfluidsynth3",
"binary_version": "2.2.5-1ubuntu0.1~esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:22.04:LTS",
"name": "fluidsynth",
"purl": "pkg:deb/ubuntu/fluidsynth@2.2.5-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.2.5-1ubuntu0.1~esm1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.1.7-1.1",
"2.2.4-2",
"2.2.5-1"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2026-58264",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2026-61714",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:Pro:24.04:LTS"
}
},
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "fluidsynth",
"binary_version": "2.3.4-1ubuntu0.1~esm1"
},
{
"binary_name": "libfluidsynth3",
"binary_version": "2.3.4-1ubuntu0.1~esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:24.04:LTS",
"name": "fluidsynth",
"purl": "pkg:deb/ubuntu/fluidsynth@2.3.4-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.3.4-1ubuntu0.1~esm1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.3.3-2.1",
"2.3.4-1",
"2.3.4-1build1",
"2.3.4-1build2",
"2.3.4-1build3"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2026-58264",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2026-61714",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:Pro:26.04:LTS"
}
},
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "fluidsynth",
"binary_version": "2.4.8+dfsg-1ubuntu0.1~esm1"
},
{
"binary_name": "libfluidsynth3",
"binary_version": "2.4.8+dfsg-1ubuntu0.1~esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:26.04:LTS",
"name": "fluidsynth",
"purl": "pkg:deb/ubuntu/fluidsynth@2.4.8+dfsg-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/resolute"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.4.8+dfsg-1ubuntu0.1~esm1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.4.7+dfsg-2",
"2.4.8+dfsg-1"
]
}
],
"aliases": [],
"details": "It was discovered that FluidSynth did not properly validate the channel\nargument of the pitch_bend_range command. A remote attacker could\npossibly use this issue to cause FluidSynth to crash, resulting in a\ndenial of service, or execute arbitrary code. (CVE-2026-58264)\n\nIt was discovered that FluidSynth incorrectly handled configurations with\nmore than 16 MIDI channels in its MIDI player, leading to a heap buffer\noverflow. An attacker could possibly use this issue to cause FluidSynth\nto crash, resulting in a denial of service, or execute arbitrary code.\nThis issue only affected Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu\n26.04 LTS. (CVE-2026-61714)",
"id": "USN-8885-1",
"modified": "2026-10-06T15:45:33Z",
"published": "2026-10-06T15:45:33Z",
"references": [
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-8885-1"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-58264"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-61714"
}
],
"related": [],
"schema_version": "1.7.0",
"summary": "fluidsynth vulnerabilities",
"upstream": [
"UBUNTU-CVE-2026-58264",
"UBUNTU-CVE-2026-61714"
]
}
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Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
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- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
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