GHSA-XX23-73HR-9P64
Vulnerability from github – Published: 2025-12-24 15:30 – Updated: 2025-12-24 15:30In the Linux kernel, the following vulnerability has been resolved:
ALSA: pcm: Fix potential data race at PCM memory allocation helpers
The PCM memory allocation helpers have a sanity check against too many buffer allocations. However, the check is performed without a proper lock and the allocation isn't serialized; this allows user to allocate more memories than predefined max size.
Practically seen, this isn't really a big problem, as it's more or less some "soft limit" as a sanity check, and it's not possible to allocate unlimitedly. But it's still better to address this for more consistent behavior.
The patch covers the size check in do_alloc_pages() with the card->memory_mutex, and increases the allocated size there for preventing the further overflow. When the actual allocation fails, the size is decreased accordingly.
{
"affected": [],
"aliases": [
"CVE-2023-54072"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-12-24T13:16:09Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: pcm: Fix potential data race at PCM memory allocation helpers\n\nThe PCM memory allocation helpers have a sanity check against too many\nbuffer allocations. However, the check is performed without a proper\nlock and the allocation isn\u0027t serialized; this allows user to allocate\nmore memories than predefined max size.\n\nPractically seen, this isn\u0027t really a big problem, as it\u0027s more or\nless some \"soft limit\" as a sanity check, and it\u0027s not possible to\nallocate unlimitedly. But it\u0027s still better to address this for more\nconsistent behavior.\n\nThe patch covers the size check in do_alloc_pages() with the\ncard-\u003ememory_mutex, and increases the allocated size there for\npreventing the further overflow. When the actual allocation fails,\nthe size is decreased accordingly.",
"id": "GHSA-xx23-73hr-9p64",
"modified": "2025-12-24T15:30:36Z",
"published": "2025-12-24T15:30:36Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-54072"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/3eb4e47a94e3f76521d7d344696db61e6a9619c7"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/773ccad902f67583a58b5650a2f8d8daf2e76fac"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/7e11c58b2620a22c67a5ae28d64ce383890ee9f4"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/7e1d1456c8db9949459c5a24e8845cfe92430b0f"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/a0ab49e7a758b488b2090171a75d50735c0876f6"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/bd55842ed998a622ba6611fe59b3358c9f76773d"
}
],
"schema_version": "1.4.0",
"severity": []
}
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