Description

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 Unknown

CVSS Score N/A

CVSS Vector N/A

CWE N/A

Public Exploit ✅ No

Source NVD

Published 2025-12-24

Updated 2026-06-08

Modified 2026-04-02

Fix URL N/A

Software	From version	Fixed in
kernel	6.2.0	6.4.4
unknown	—	—