FKIE_CVE-2023-54072

Vulnerability from fkie_nvd - Published: 2025-12-24 13:16 - Updated: 2025-12-24 13:16
Severity ?
Summary
In 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.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3eb4e47a94e3f76521d7d344696db61e6a9619c7
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/773ccad902f67583a58b5650a2f8d8daf2e76fac
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7e11c58b2620a22c67a5ae28d64ce383890ee9f4
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7e1d1456c8db9949459c5a24e8845cfe92430b0f
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a0ab49e7a758b488b2090171a75d50735c0876f6
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bd55842ed998a622ba6611fe59b3358c9f76773d
Impacted products
Vendor Product Version
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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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": "CVE-2023-54072",
  "lastModified": "2025-12-24T13:16:09.050",
  "metrics": {},
  "published": "2025-12-24T13:16:09.050",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/3eb4e47a94e3f76521d7d344696db61e6a9619c7"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/773ccad902f67583a58b5650a2f8d8daf2e76fac"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/7e11c58b2620a22c67a5ae28d64ce383890ee9f4"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/7e1d1456c8db9949459c5a24e8845cfe92430b0f"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/a0ab49e7a758b488b2090171a75d50735c0876f6"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/bd55842ed998a622ba6611fe59b3358c9f76773d"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}


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