CVE-2025-23134
Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
16/04/2025
Last modified:
01/10/2025
Description
In the Linux kernel, the following vulnerability has been resolved:<br />
<br />
ALSA: timer: Don&#39;t take register_mutex with copy_from/to_user()<br />
<br />
The infamous mmap_lock taken in copy_from/to_user() can be often<br />
problematic when it&#39;s called inside another mutex, as they might lead<br />
to deadlocks.<br />
<br />
In the case of ALSA timer code, the bad pattern is with<br />
guard(mutex)(&register_mutex) that covers copy_from/to_user() -- which<br />
was mistakenly introduced at converting to guard(), and it had been<br />
carefully worked around in the past.<br />
<br />
This patch fixes those pieces simply by moving copy_from/to_user() out<br />
of the register mutex lock again.
Impact
Base Score 3.x
5.50
Severity 3.x
MEDIUM
Vulnerable products and versions
| CPE | From | Up to |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 6.9 (including) | 6.12.23 (excluding) |
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 6.13 (including) | 6.13.11 (excluding) |
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 6.14 (including) | 6.14.2 (excluding) |
To consult the complete list of CPE names with products and versions, see this page