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.
CVSS
No CVSS.
References
Configurations
No configuration.
History
No history.
Information
Published : 2025-12-24 13:16
Updated : 2026-06-17 06:46
NVD link : CVE-2023-54072
Mitre link : CVE-2023-54072
CVE.ORG link : CVE-2023-54072
JSON object : View
Products Affected
No product.
CWE
No CWE.
