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

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  "cveMetadata": {
    "cveId": "CVE-2026-56109",
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "dateUpdated": "2026-06-22T17:29:23.873Z",
    "dateReserved": "2026-06-18T19:15:10.650Z",
    "datePublished": "2026-06-22T15:58:42.404Z",
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        "dateUpdated": "2026-06-22T15:58:42.404Z"
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      "datePublic": "2026-06-08T00:00:00.000Z",
      "title": "ALSA Library < 1.2.16.1 Double-Free via parse_def() in conf.c",
      "descriptions": [
        {
          "lang": "en",
          "value": "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."
        }
      ],
      "affected": [
        {
          "vendor": "alsa-project",
          "product": "alsa-lib",
          "repo": "https://github.com/alsa-project/alsa-lib",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "1.2.16.1"
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      "problemTypes": [
        {
          "descriptions": [
            {
              "lang": "en",
              "description": "Double Free",
              "cweId": "CWE-415",
              "type": "CWE"
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          "url": "https://lore.kernel.org/alsa-devel/CAGt8pqBU0p2voB+qHxWGcNJrKHAcBhAyHUUBPLBN-Yj_SiV6MQ@mail.gmail.com/",
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          "url": "https://github.com/alsa-project/alsa-lib/releases/tag/v1.2.16.1",
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        {
          "url": "https://github.com/alsa-project/alsa-lib/commit/536dd6f8affdf5197c12a63a71c92a70b2833cc0",
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            "attackVector": "LOCAL",
            "attackComplexity": "LOW",
            "privilegesRequired": "NONE",
            "userInteraction": "NONE",
            "scope": "UNCHANGED",
            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
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            "baseScore": 6.8,
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          "lang": "en",
          "value": "Dmitrijs Trizna of Aisle Research",
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