CVE-2023-54072: Linux

EPSS: 0.2% chance of exploitation in the next 30 days.

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.

Affected products

• Linux Linux: from 5.6, before 5.10.193 (fixed in 5.10.193); from 5.11, before 5.15.129 (fixed in 5.15.129); from 5.16, before 6.1.39 (fixed in 6.1.39); from 6.2, before 6.4.4 (fixed in 6.4.4)

Published 2025-12-24. Last modified 2026-06-17.