ALSA Library < 1.2.16.1 Double-Free via parse_def() in conf.c_CVE-2026-56109

{
    "lastseen": "",
    "description": "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.",
    "published": "2026-06-22T15:58:42.404Z",
    "modified": "2026-06-22T15:58:42.404Z",
    "type": "cve",
    "title": "ALSA Library < 1.2.16.1 Double-Free via parse_def() in conf.c",
    "source": "VulnCheck",
    "references": "https://lore.kernel.org/alsa-devel/CAGt8pqBU0p2voB+qHxWGcNJrKHAcBhAyHUUBPLBN-Yj_SiV6MQ@mail.gmail.com/\nhttps://github.com/alsa-project/alsa-lib/releases/tag/v1.2.16.1\nhttps://github.com/alsa-project/alsa-lib/commit/536dd6f8affdf5197c12a63a71c92a70b2833cc0\nhttps://www.vulncheck.com/advisories/alsa-library-double-free-via-parse-def-in-conf-c",
    "id": "CVE-2026-56109",
    "bulletinFamily": "",
    "cwe": [
        "CWE-415"
    ],
    "cvelist": null,
    "sourceData": "alsa-project alsa-lib 0",
    "sourceHref": "",
    "cvss": {
        "score": 7,
        "severity": "HIGH",
        "vector": "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",
        "version": "4.0"
    },
    "cvss2": [],
    "cvss3": {
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        "baseScore": 0,
        "baseSeverity": "",
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        "privilegesRequired": "",
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        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
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    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "alsa-lib",
    "version": "0",
    "vendor": "alsa-project",
    "ai_description": "",
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    "ai_score": 0
}