UBUNTU-CVE-2026-56109

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Source

https://ubuntu.com/security/CVE-2026-56109

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-56109.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-56109

Upstream

CVE-2026-56109

Published

2026-06-22T18:16:00Z

Modified

2026-06-24T11:02:01.998530165Z

Severity

6.8 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H CVSS Calculator
7.0 (High) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N CVSS Calculator
Ubuntu - medium

Summary

[none]

Details

The Advanced Linux Sound Architecture (ALSA) library before 1.2.16.1 contains a double-free vulnerability in parsedef() in src/conf.c that allows attackers to corrupt memory by supplying maliciously crafted ALSA configuration text. When parsing nested compound or array configuration blocks, parsedef() fails to check return values before continuing, causing sndconfigdelete() to be called twice on the same already-freed node, resulting in a NULL-pointer write or invalid memory read.

References

Affected packages

Ubuntu:14.04:LTS

alsa-lib

Package

Name: alsa-lib
Purl: pkg:deb/ubuntu/alsa-lib?arch=source&distro=trusty

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.0.27.2-1ubuntu6

1.0.27.2-1ubuntu7

1.0.27.2-3ubuntu1

1.0.27.2-3ubuntu2

1.0.27.2-3ubuntu5

1.0.27.2-3ubuntu6

1.0.27.2-3ubuntu7

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "libasound2",
            "binary_version": "1.0.27.2-3ubuntu7"
        },
        {
            "binary_name": "libasound2-data",
            "binary_version": "1.0.27.2-3ubuntu7"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-56109.json"

Ubuntu:16.04:LTS

alsa-lib

Package

Name: alsa-lib
Purl: pkg:deb/ubuntu/alsa-lib?arch=source&distro=xenial

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.0.29-0ubuntu1

1.1.0-0ubuntu1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "libasound2",
            "binary_version": "1.1.0-0ubuntu1"
        },
        {
            "binary_name": "libasound2-data",
            "binary_version": "1.1.0-0ubuntu1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-56109.json"

Ubuntu:18.04:LTS

alsa-lib

Package

Name: alsa-lib
Purl: pkg:deb/ubuntu/alsa-lib?arch=source&distro=bionic

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.1.3-5

1.1.3-5ubuntu0.1

1.1.3-5ubuntu0.2

1.1.3-5ubuntu0.4

1.1.3-5ubuntu0.5

1.1.3-5ubuntu0.6

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "libasound2",
            "binary_version": "1.1.3-5ubuntu0.6"
        },
        {
            "binary_name": "libasound2-data",
            "binary_version": "1.1.3-5ubuntu0.6"
        },
        {
            "binary_name": "libasound2-plugin-smixer",
            "binary_version": "1.1.3-5ubuntu0.6"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-56109.json"

Ubuntu:22.04:LTS

alsa-lib

Package

Name: alsa-lib
Purl: pkg:deb/ubuntu/alsa-lib?arch=source&distro=jammy

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.2.4-1.1ubuntu3

1.2.4-1.1ubuntu4

1.2.5.1-1ubuntu1

1.2.6.1-1ubuntu1

1.2.6.1-1ubuntu1.1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "libasound2",
            "binary_version": "1.2.6.1-1ubuntu1.1"
        },
        {
            "binary_name": "libasound2-data",
            "binary_version": "1.2.6.1-1ubuntu1.1"
        },
        {
            "binary_name": "libasound2-plugin-smixer",
            "binary_version": "1.2.6.1-1ubuntu1.1"
        },
        {
            "binary_name": "libatopology2",
            "binary_version": "1.2.6.1-1ubuntu1.1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-56109.json"

Ubuntu:24.04:LTS

alsa-lib

Package

Name: alsa-lib
Purl: pkg:deb/ubuntu/alsa-lib?arch=source&distro=noble

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.2.9-2

1.2.10-1

1.2.10-2

1.2.10-3

1.2.10-3build1

1.2.11-1build1

1.2.11-1build2

1.2.11-1ubuntu0.1

1.2.11-1ubuntu0.2

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "libasound2-data",
            "binary_version": "1.2.11-1ubuntu0.2"
        },
        {
            "binary_name": "libasound2-plugin-smixer",
            "binary_version": "1.2.11-1ubuntu0.2"
        },
        {
            "binary_name": "libasound2t64",
            "binary_version": "1.2.11-1ubuntu0.2"
        },
        {
            "binary_name": "libatopology2t64",
            "binary_version": "1.2.11-1ubuntu0.2"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-56109.json"

Ubuntu:25.10

alsa-lib

Package

Name: alsa-lib
Purl: pkg:deb/ubuntu/alsa-lib?arch=source&distro=questing

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.2.13-1build1

1.2.14-1

1.2.14-1ubuntu1

1.2.14-1ubuntu1.1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "libasound2-data",
            "binary_version": "1.2.14-1ubuntu1.1"
        },
        {
            "binary_name": "libasound2-plugin-smixer",
            "binary_version": "1.2.14-1ubuntu1.1"
        },
        {
            "binary_name": "libasound2t64",
            "binary_version": "1.2.14-1ubuntu1.1"
        },
        {
            "binary_name": "libatopology2t64",
            "binary_version": "1.2.14-1ubuntu1.1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-56109.json"

Ubuntu:26.04:LTS

alsa-lib

Package

Name: alsa-lib
Purl: pkg:deb/ubuntu/alsa-lib?arch=source&distro=resolute

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.2.14-1ubuntu1

1.2.14-2ubuntu1

1.2.15-2

1.2.15.1-1

1.2.15.3-1

1.2.15.3-1build1

1.2.15.3-1ubuntu1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "libasound2-data",
            "binary_version": "1.2.15.3-1ubuntu1"
        },
        {
            "binary_name": "libasound2-plugin-smixer",
            "binary_version": "1.2.15.3-1ubuntu1"
        },
        {
            "binary_name": "libasound2t64",
            "binary_version": "1.2.15.3-1ubuntu1"
        },
        {
            "binary_name": "libatopology2t64",
            "binary_version": "1.2.15.3-1ubuntu1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-56109.json"

Ubuntu:Pro:20.04:LTS

alsa-lib

Package

Name: alsa-lib
Purl: pkg:deb/ubuntu/alsa-lib?arch=source&distro=esm-infra%2Ffocal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.1.9-0ubuntu1

1.2.1.2-2ubuntu2

1.2.2-2ubuntu1

1.2.2-2.1

1.2.2-2.1ubuntu1

1.2.2-2.1ubuntu2

1.2.2-2.1ubuntu2.1

1.2.2-2.1ubuntu2.2

1.2.2-2.1ubuntu2.3

1.2.2-2.1ubuntu2.4

1.2.2-2.1ubuntu2.5

1.2.2-2.1ubuntu2.5+esm1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "libasound2",
            "binary_version": "1.2.2-2.1ubuntu2.5+esm1"
        },
        {
            "binary_name": "libasound2-data",
            "binary_version": "1.2.2-2.1ubuntu2.5+esm1"
        },
        {
            "binary_name": "libasound2-plugin-smixer",
            "binary_version": "1.2.2-2.1ubuntu2.5+esm1"
        },
        {
            "binary_name": "libatopology2",
            "binary_version": "1.2.2-2.1ubuntu2.5+esm1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-56109.json"