CVE-2023-54072 (GCVE-0-2023-54072)
Vulnerability from cvelistv5 – Published: 2025-12-24 12:23 – Updated: 2026-01-05 10:33
VLAI?
Title
ALSA: pcm: Fix potential data race at PCM memory allocation helpers
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.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Affected:
95b30a4312545f2dde9db12bf6a425f35d5a0d77 , < 7e1d1456c8db9949459c5a24e8845cfe92430b0f
(git)
Affected: d4cfb30fce03093ad944e0b44bd8f40bdad5330e , < 7e11c58b2620a22c67a5ae28d64ce383890ee9f4 (git) Affected: d4cfb30fce03093ad944e0b44bd8f40bdad5330e , < a0ab49e7a758b488b2090171a75d50735c0876f6 (git) Affected: d4cfb30fce03093ad944e0b44bd8f40bdad5330e , < 3eb4e47a94e3f76521d7d344696db61e6a9619c7 (git) Affected: d4cfb30fce03093ad944e0b44bd8f40bdad5330e , < 773ccad902f67583a58b5650a2f8d8daf2e76fac (git) Affected: d4cfb30fce03093ad944e0b44bd8f40bdad5330e , < bd55842ed998a622ba6611fe59b3358c9f76773d (git) |
||
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"status": "unaffected",
"version": "6.1.39",
"versionType": "semver"
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{
"lessThanOrEqual": "6.4.*",
"status": "unaffected",
"version": "6.4.4",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.5",
"versionType": "original_commit_for_fix"
}
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}
],
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"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."
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{
"url": "https://git.kernel.org/stable/c/bd55842ed998a622ba6611fe59b3358c9f76773d"
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"title": "ALSA: pcm: Fix potential data race at PCM memory allocation helpers",
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"cveId": "CVE-2023-54072",
"datePublished": "2025-12-24T12:23:15.552Z",
"dateReserved": "2025-12-24T12:21:05.093Z",
"dateUpdated": "2026-01-05T10:33:39.832Z",
"state": "PUBLISHED"
},
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}
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Sightings
| Author | Source | Type | Date |
|---|
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.
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