UBUNTU-CVE-2026-111123

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Source
https://ubuntu.com/security/CVE-2026-111123
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-111123.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-111123
Upstream
Published
2026-10-16T00:00:00Z
Modified
2026-10-17T12:59:52Z
Severity
  • 6.1 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H CVSS Calculator
  • 6.9 (Medium) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

FluidSynth through 2.6.1 contains an out-of-bounds write vulnerability that allows attackers to corrupt heap and stack memory by supplying unvalidated SoundFont modulator destination values. Attackers can craft an SF2 file with PMOD/IMOD destinations of 63 to 255 that, when loaded and played, write past the voice generator array and updated_gen_bit, causing memory corruption and crashes.

References

Affected packages

Ubuntu:26.10
fluidsynth

Package

Name
fluidsynth
Purl
pkg:deb/ubuntu/fluidsynth?arch=source&distro=stonking

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

2.*
2.4.8+dfsg-1
2.5.6+dfsg-1
2.5.7+dfsg-1
2.6.0+dfsg-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "fluidsynth",
            "binary_version":  "2.6.0+dfsg-1"
        },
        {
            "binary_name":  "libfluidsynth3",
            "binary_version":  "2.6.0+dfsg-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-111123.json"
Ubuntu:Pro:14.04:LTS
fluidsynth

Package

Name
fluidsynth
Purl
pkg:deb/ubuntu/fluidsynth?arch=source&distro=esm-infra-legacy%2Ftrusty

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.1.6-2
1.1.6-2ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "fluidsynth",
            "binary_version":  "1.1.6-2ubuntu0.1~esm1"
        },
        {
            "binary_name":  "libfluidsynth1",
            "binary_version":  "1.1.6-2ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-111123.json"
Ubuntu:Pro:16.04:LTS
fluidsynth

Package

Name
fluidsynth
Purl
pkg:deb/ubuntu/fluidsynth?arch=source&distro=esm-apps-legacy%2Fxenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.1.6-2build1
1.1.6-3
1.1.6-3ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "fluidsynth",
            "binary_version":  "1.1.6-3ubuntu0.1~esm1"
        },
        {
            "binary_name":  "libfluidsynth1",
            "binary_version":  "1.1.6-3ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-111123.json"
Ubuntu:Pro:18.04:LTS
fluidsynth

Package

Name
fluidsynth
Purl
pkg:deb/ubuntu/fluidsynth?arch=source&distro=esm-apps%2Fbionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.1.6-4
1.1.8-1
1.1.8-2
1.1.8-3
1.1.9-1
1.1.9-1ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "fluidsynth",
            "binary_version":  "1.1.9-1ubuntu0.1~esm1"
        },
        {
            "binary_name":  "libfluidsynth1",
            "binary_version":  "1.1.9-1ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-111123.json"
Ubuntu:Pro:20.04:LTS
fluidsynth

Package

Name
fluidsynth
Purl
pkg:deb/ubuntu/fluidsynth?arch=source&distro=esm-apps%2Ffocal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.1.11-4
1.1.11-4ubuntu1
2.*
2.1.0-1
2.1.1-2
2.1.1-2ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "fluidsynth",
            "binary_version":  "2.1.1-2ubuntu0.1~esm1"
        },
        {
            "binary_name":  "libfluidsynth2",
            "binary_version":  "2.1.1-2ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-111123.json"
Ubuntu:Pro:22.04:LTS
fluidsynth

Package

Name
fluidsynth
Purl
pkg:deb/ubuntu/fluidsynth?arch=source&distro=esm-apps%2Fjammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

2.*
2.1.7-1.1
2.2.4-2
2.2.5-1
2.2.5-1ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "fluidsynth",
            "binary_version":  "2.2.5-1ubuntu0.1~esm1"
        },
        {
            "binary_name":  "libfluidsynth3",
            "binary_version":  "2.2.5-1ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-111123.json"
Ubuntu:Pro:24.04:LTS
fluidsynth

Package

Name
fluidsynth
Purl
pkg:deb/ubuntu/fluidsynth?arch=source&distro=esm-apps%2Fnoble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

2.*
2.3.3-2.1
2.3.4-1
2.3.4-1build1
2.3.4-1build2
2.3.4-1build3
2.3.4-1ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "fluidsynth",
            "binary_version":  "2.3.4-1ubuntu0.1~esm1"
        },
        {
            "binary_name":  "libfluidsynth3",
            "binary_version":  "2.3.4-1ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-111123.json"
Ubuntu:Pro:26.04:LTS
fluidsynth

Package

Name
fluidsynth
Purl
pkg:deb/ubuntu/fluidsynth?arch=source&distro=esm-apps%2Fresolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

2.*
2.4.7+dfsg-2
2.4.8+dfsg-1
2.4.8+dfsg-1ubuntu0.1~esm1

Ecosystem specific 

{
    "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"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-111123.json"