Vulnerability-Lookup

oesa-2026-2849

Vulnerability from osv_openeuler

Published

2026-07-06 11:11

Modified

2026-08-06 11:11

Summary

alsa-lib security update

Details

The alsa-lib is a library to interface with ALSA in the Linux kernel and virtual devices using a plugin system. More detail: https://alsa.opensrc.org/Alsa-lib

Security Fix(es):

The Advanced Linux Sound Architecture (ALSA) library before 1.2.16.1 contains a double-free vulnerability in parse_def() 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, parse_def() fails to check return values before continuing, causing snd_config_delete() to be called twice on the same already-freed node, resulting in a NULL-pointer write or invalid memory read.(CVE-2026-56109)

Severity

6.8 (Medium)


                    
                      CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H

References

URL

Type

	https://www.openeuler.org/zh/security/security-bu…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-56109	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "alsa-lib-1.2.5.1-5.oe2203sp4.aarch64.rpm",
          "alsa-lib-debuginfo-1.2.5.1-5.oe2203sp4.aarch64.rpm",
          "alsa-lib-debugsource-1.2.5.1-5.oe2203sp4.aarch64.rpm",
          "alsa-lib-devel-1.2.5.1-5.oe2203sp4.aarch64.rpm"
        ],
        "noarch": [
          "alsa-topology-1.2.5.1-5.oe2203sp4.noarch.rpm",
          "alsa-ucm-1.2.5.1-5.oe2203sp4.noarch.rpm"
        ],
        "src": [
          "alsa-lib-1.2.5.1-5.oe2203sp4.src.rpm"
        ],
        "x86_64": [
          "alsa-lib-1.2.5.1-5.oe2203sp4.x86_64.rpm",
          "alsa-lib-debuginfo-1.2.5.1-5.oe2203sp4.x86_64.rpm",
          "alsa-lib-debugsource-1.2.5.1-5.oe2203sp4.x86_64.rpm",
          "alsa-lib-devel-1.2.5.1-5.oe2203sp4.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:22.03-LTS-SP4",
        "name": "alsa-lib",
        "purl": "pkg:rpm/openEuler/alsa-lib\u0026distro=openEuler-22.03-LTS-SP4"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.2.5.1-5.oe2203sp4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "Medium"
  },
  "details": "The alsa-lib is a library to interface with ALSA in the Linux kernel and virtual devices using a plugin system. More detail: https://alsa.opensrc.org/Alsa-lib\r\n\r\nSecurity Fix(es):\n\nThe Advanced Linux Sound Architecture (ALSA) library before 1.2.16.1 contains a double-free vulnerability in parse_def() 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, parse_def() fails to check return values before continuing, causing snd_config_delete() to be called twice on the same already-freed node, resulting in a NULL-pointer write or invalid memory read.(CVE-2026-56109)",
  "id": "OESA-2026-2849",
  "modified": "2026-08-06T11:11:45Z",
  "published": "2026-07-06T11:11:45Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-2849"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-56109"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "alsa-lib security update",
  "upstream": [
    "CVE-2026-56109"
  ]
}

CVE-2026-56109 (GCVE-0-2026-56109)

Vulnerability from cvelistv5 – Published: 2026-06-22 15:58 – Updated: 2026-07-14 21:34 X_Open Source

Title

ALSA Library < 1.2.16.1 Double-Free via parse_def() in conf.c

Summary

Severity

7 (High)


                        
                          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

6.8 (Medium)


                        
                          CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-22 17:29 UTC

CWE

CWE-415 - Double Free

Assigner

VulnCheck mitre root

References

4 references

URL	Tags
https://lore.kernel.org/alsa-devel/CAGt8pqBU0p2vo…	technical-descriptionexploit
https://github.com/alsa-project/alsa-lib/releases…	release-notes
https://github.com/alsa-project/alsa-lib/commit/5…	patch
https://www.vulncheck.com/advisories/alsa-library…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
alsa-project	alsa-lib	Affected: 0 , < 1.2.16.1 (custom) cpe:2.3:a:alsa-project:alsa-lib::::::::

Date Public

2026-06-08 00:00

Credits

Dmitrijs Trizna of Aisle Research Luigino Camastra of Aisle Research Guido Vranken of Aisle Research Ze Sheng of Aisle Research

Show details on NVD website

JSON

To clipboard

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        "metrics": [
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            "other": {
              "content": {
                "id": "CVE-2026-56109",
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                  },
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                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-06-22T17:29:11.617397Z",
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      "cpeApplicability": [
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                  "criteria": "cpe:2.3:a:alsa-project:alsa-lib:*:*:*:*:*:*:*:*",
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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
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.

Detection rules are retrieved from Rulezet.

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.

Related by attack behaviour

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