UBUNTU-CVE-2026-96675 (CVE-2026-96675)
Vulnerability from osv_ubuntu – Published: 2026-09-24 00:00 – Updated: 2026-09-24 00:00 – Source website
VLAI
Details
alsa-lib through 1.2.16.1 contains a denial of service vulnerability in the multi PCM plugin that fails to validate sparse binding indices before array access. Attackers can supply a malicious ALSA configuration file with sparse bindings to trigger an out-of-bounds array read and assertion failure, causing the application to abort.
Severity
N/A (UNKNOWN)
References
{
"affected": [
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libasound2",
"binary_version": "1.0.27.2-3ubuntu7"
},
{
"binary_name": "libasound2-data",
"binary_version": "1.0.27.2-3ubuntu7"
}
]
},
"package": {
"ecosystem": "Ubuntu:14.04:LTS",
"name": "alsa-lib",
"purl": "pkg:deb/ubuntu/alsa-lib@1.0.27.2-3ubuntu7?arch=source\u0026distro=trusty"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"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": "1.1.0-0ubuntu1"
},
{
"binary_name": "libasound2-data",
"binary_version": "1.1.0-0ubuntu1"
}
]
},
"package": {
"ecosystem": "Ubuntu:16.04:LTS",
"name": "alsa-lib",
"purl": "pkg:deb/ubuntu/alsa-lib@1.1.0-0ubuntu1?arch=source\u0026distro=xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.0.29-0ubuntu1",
"1.1.0-0ubuntu1"
]
},
{
"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"
}
]
},
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "alsa-lib",
"purl": "pkg:deb/ubuntu/alsa-lib@1.1.3-5ubuntu0.6?arch=source\u0026distro=bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"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": "1.2.2-2.1ubuntu2.5+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"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:20.04:LTS",
"name": "alsa-lib",
"purl": "pkg:deb/ubuntu/alsa-lib@1.2.2-2.1ubuntu2.5+esm1?arch=source\u0026distro=esm-infra/focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"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": "1.2.6.1-1ubuntu1.2"
},
{
"binary_name": "libasound2-data",
"binary_version": "1.2.6.1-1ubuntu1.2"
},
{
"binary_name": "libasound2-plugin-smixer",
"binary_version": "1.2.6.1-1ubuntu1.2"
},
{
"binary_name": "libatopology2",
"binary_version": "1.2.6.1-1ubuntu1.2"
}
]
},
"package": {
"ecosystem": "Ubuntu:22.04:LTS",
"name": "alsa-lib",
"purl": "pkg:deb/ubuntu/alsa-lib@1.2.6.1-1ubuntu1.2?arch=source\u0026distro=jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"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",
"1.2.6.1-1ubuntu1.2"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libasound2-data",
"binary_version": "1.2.11-1ubuntu0.3"
},
{
"binary_name": "libasound2-plugin-smixer",
"binary_version": "1.2.11-1ubuntu0.3"
},
{
"binary_name": "libasound2t64",
"binary_version": "1.2.11-1ubuntu0.3"
},
{
"binary_name": "libatopology2t64",
"binary_version": "1.2.11-1ubuntu0.3"
}
]
},
"package": {
"ecosystem": "Ubuntu:24.04:LTS",
"name": "alsa-lib",
"purl": "pkg:deb/ubuntu/alsa-lib@1.2.11-1ubuntu0.3?arch=source\u0026distro=noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"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",
"1.2.11-1ubuntu0.3"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libasound2-data",
"binary_version": "1.2.15.3-1ubuntu1.1"
},
{
"binary_name": "libasound2-plugin-smixer",
"binary_version": "1.2.15.3-1ubuntu1.1"
},
{
"binary_name": "libasound2t64",
"binary_version": "1.2.15.3-1ubuntu1.1"
},
{
"binary_name": "libatopology2t64",
"binary_version": "1.2.15.3-1ubuntu1.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:26.04:LTS",
"name": "alsa-lib",
"purl": "pkg:deb/ubuntu/alsa-lib@1.2.15.3-1ubuntu1.1?arch=source\u0026distro=resolute"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"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",
"1.2.15.3-1ubuntu1.1"
]
}
],
"aliases": [],
"details": "alsa-lib through 1.2.16.1 contains a denial of service vulnerability in the multi PCM plugin that fails to validate sparse binding indices before array access. Attackers can supply a malicious ALSA configuration file with sparse bindings to trigger an out-of-bounds array read and assertion failure, causing the application to abort.",
"id": "UBUNTU-CVE-2026-96675",
"modified": "2026-09-24T00:00:00Z",
"published": "2026-09-24T00:00:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-96675"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-96675"
},
{
"type": "REPORT",
"url": "https://github.com/alsa-project/alsa-lib/pull/527"
},
{
"type": "REPORT",
"url": "https://github.com/alsa-project/alsa-lib"
},
{
"type": "REPORT",
"url": "https://github.com/alsa-project/alsa-lib/blob/v1.2.16.1/src/pcm/pcm_multi.c#L1122-L1131"
},
{
"type": "REPORT",
"url": "https://www.vulncheck.com/advisories/alsa-lib-through-1.2.16.1-denial-of-service-via-pcm-multi"
}
],
"related": [],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2026-96675"
]
}
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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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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.
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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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