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CVE-2022-49291

7.8 · HIGH

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…

Published Feb 26, 2025CWE-416EPSS 0.30%

Overview

CVE-2022-49291 is a high-severity vulnerability. It was published on February 26, 2025 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/0090c13cbbdffd7da079ac56f80373a9a1be0bf8Refgit.kernel.org/stable/c/0f6947f5f5208f6ebd4d76a82a4757e2839a23f8Refgit.kernel.org/stable/c/1bbf82d9f961414d6c76a08f7f843ea068e0ab7bRefgit.kernel.org/stable/c/33061d0fba51d2bf70a2ef9645f703c33fe8e438Refgit.kernel.org/stable/c/92ee3c60ec9fe64404dc035e7c41277d74aa26cbRefgit.kernel.org/stable/c/9cb6c40a6ebe4a0cfc9d6a181958211682cffea9Refgit.kernel.org/stable/c/a42aa926843acca96c0dfbde2e835b8137f2f092Refgit.kernel.org/stable/c/fbeb492694ce0441053de57699e1e2b7bc148a69

How CyberStrike helps

Frequently asked questions

What is CVE-2022-49291?

CVE-2022-49291 is a high-severity vulnerability. It was published on February 26, 2025 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2022-49291?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2022-49291?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2022-49291?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-49291 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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