CVE-2022-49291
"ALSA Linux Kernel UAF Race Condition"
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.
INFO
Published Date :
Feb. 26, 2025, 7:01 a.m.
Last Modified :
March 25, 2025, 2:49 p.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
No
Impact Score :
5.9
Exploitability Score :
1.8
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2022-49291.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2022-49291 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2022-49291 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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Initial Analysis by [email protected]
Mar. 25, 2025
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.17 up to (excluding) 5.17.1 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.15 up to (excluding) 4.19.243 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.20 up to (excluding) 5.4.193 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.5 up to (excluding) 5.10.109 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.15.32 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 5.16.18 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (excluding) 4.14.279 Added Reference Type kernel.org: https://git.kernel.org/stable/c/0090c13cbbdffd7da079ac56f80373a9a1be0bf8 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/0f6947f5f5208f6ebd4d76a82a4757e2839a23f8 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/1bbf82d9f961414d6c76a08f7f843ea068e0ab7b Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/33061d0fba51d2bf70a2ef9645f703c33fe8e438 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/92ee3c60ec9fe64404dc035e7c41277d74aa26cb Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/9cb6c40a6ebe4a0cfc9d6a181958211682cffea9 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/a42aa926843acca96c0dfbde2e835b8137f2f092 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/fbeb492694ce0441053de57699e1e2b7bc148a69 Types: Patch -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Feb. 27, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-416 -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Feb. 26, 2025
Action Type Old Value New Value Added 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. Added Reference https://git.kernel.org/stable/c/0090c13cbbdffd7da079ac56f80373a9a1be0bf8 Added Reference https://git.kernel.org/stable/c/0f6947f5f5208f6ebd4d76a82a4757e2839a23f8 Added Reference https://git.kernel.org/stable/c/1bbf82d9f961414d6c76a08f7f843ea068e0ab7b Added Reference https://git.kernel.org/stable/c/33061d0fba51d2bf70a2ef9645f703c33fe8e438 Added Reference https://git.kernel.org/stable/c/92ee3c60ec9fe64404dc035e7c41277d74aa26cb Added Reference https://git.kernel.org/stable/c/9cb6c40a6ebe4a0cfc9d6a181958211682cffea9 Added Reference https://git.kernel.org/stable/c/a42aa926843acca96c0dfbde2e835b8137f2f092 Added Reference https://git.kernel.org/stable/c/fbeb492694ce0441053de57699e1e2b7bc148a69
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2022-49291 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2022-49291
weaknesses.