UBUNTU-CVE-2026-25068

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Source
https://ubuntu.com/security/CVE-2026-25068
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-25068.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-25068
Upstream
Downstream
Related
Published
2026-01-29T20:16:00Z
Modified
2026-02-23T06:58:00.444515Z
Severity
  • 4.6 (Medium) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

alsa-lib versions 1.2.2 up to and including 1.2.15.2, prior to commit 5f7fe33, contain a heap-based buffer overflow in the topology mixer control decoder. The tplgdecodecontrolmixer1() function reads the numchannels field from untrusted .tplg data and uses it as a loop bound without validating it against the fixed-size channel array (SNDTPLGMAXCHAN). A crafted topology file with an excessive numchannels value can cause out-of-bounds heap writes, leading to a crash.

References

Affected packages

Ubuntu:20.04:LTS / alsa-lib

Package

Name
alsa-lib
Purl
pkg:deb/ubuntu/alsa-lib@1.2.2-2.1ubuntu2.5?arch=source&distro=focal

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

Ecosystem specific 

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

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-25068.json"

Ubuntu:22.04:LTS / alsa-lib

Package

Name
alsa-lib
Purl
pkg:deb/ubuntu/alsa-lib@1.2.6.1-1ubuntu1.1?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.2.6.1-1ubuntu1.1

Affected versions

1.*
1.2.4-1.1ubuntu3
1.2.4-1.1ubuntu4
1.2.5.1-1ubuntu1
1.2.6.1-1ubuntu1

Ecosystem specific 

{
    "availability": "No subscription required",
    "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-dev",
            "binary_version": "1.2.6.1-1ubuntu1.1"
        },
        {
            "binary_name": "libasound2-plugin-smixer",
            "binary_version": "1.2.6.1-1ubuntu1.1"
        },
        {
            "binary_name": "libatopology-dev",
            "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-2026-25068.json"

Ubuntu:24.04:LTS / alsa-lib

Package

Name
alsa-lib
Purl
pkg:deb/ubuntu/alsa-lib@1.2.11-1ubuntu0.2?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.2.11-1ubuntu0.2

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

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libasound2-data",
            "binary_version": "1.2.11-1ubuntu0.2"
        },
        {
            "binary_name": "libasound2-dev",
            "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": "libatopology-dev",
            "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-2026-25068.json"

Ubuntu:25.10 / alsa-lib

Package

Name
alsa-lib
Purl
pkg:deb/ubuntu/alsa-lib@1.2.14-1ubuntu1.1?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.2.14-1ubuntu1.1

Affected versions

1.*
1.2.13-1build1
1.2.14-1
1.2.14-1ubuntu1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libasound2-data",
            "binary_version": "1.2.14-1ubuntu1.1"
        },
        {
            "binary_name": "libasound2-dev",
            "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": "libatopology-dev",
            "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-2026-25068.json"