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CVE-2022-49291 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: ALSA: pcm: Fix races among concurrent hw_params and hw_free calls Currently we have neither proper check nor protection against the concurrent calls of PCM hw_params and hw_free ioctls, which may result in a UAF. Since the existing PCM stream lock can't be used for protecting the whole ioctl operations, we need a new mutex to protect those racy calls. This patch introduced a new mutex, runtime->buffer_mutex, and applies it to both hw_params and hw_free ioctl code paths. Along with it, the both functions are slightly modified (the mmap_count check is moved into the state-check block) for code simplicity.


Metrics

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CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://git.kernel.org/stable/c/0090c13cbbdffd7da079ac56f80373a9a1be0bf8 Patch 
https://git.kernel.org/stable/c/0f6947f5f5208f6ebd4d76a82a4757e2839a23f8 Patch 
https://git.kernel.org/stable/c/1bbf82d9f961414d6c76a08f7f843ea068e0ab7b Patch 
https://git.kernel.org/stable/c/33061d0fba51d2bf70a2ef9645f703c33fe8e438 Patch 
https://git.kernel.org/stable/c/92ee3c60ec9fe64404dc035e7c41277d74aa26cb Patch 
https://git.kernel.org/stable/c/9cb6c40a6ebe4a0cfc9d6a181958211682cffea9 Patch 
https://git.kernel.org/stable/c/a42aa926843acca96c0dfbde2e835b8137f2f092 Patch 
https://git.kernel.org/stable/c/fbeb492694ce0441053de57699e1e2b7bc148a69 Patch 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-416 Use After Free CISA-ADP  

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Change History

3 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2022-49291
NVD Published Date:
02/26/2025
NVD Last Modified:
03/25/2025
Source:
kernel.org