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CVE-2022-49733

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: ALSA: pcm: oss: Fix race at SNDCTL_DSP_SYNC There is a small race window at snd_pcm_oss_sync() that is called from OSS PCM SNDC…

Published Mar 2, 2025CWE-362EPSS 0.16%

Overview

CVE-2022-49733 is a high-severity vulnerability. It was published on March 2, 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: oss: Fix race at SNDCTL_DSP_SYNC

There is a small race window at snd_pcm_oss_sync() that is called from

OSS PCM SNDCTL_DSP_SYNC ioctl; namely the function calls

snd_pcm_oss_make_ready() at first, then takes the params_lock mutex

for the rest. When the stream is set up again by another thread

between them, it leads to inconsistency, and may result in unexpected

results such as NULL dereference of OSS buffer as a fuzzer spotted

recently.

The fix is simply to cover snd_pcm_oss_make_ready() call into the same

params_lock mutex with snd_pcm_oss_make_ready_locked() variant.

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/4051324a6dafd7053c74c475e80b3ba10ae672b0Refgit.kernel.org/stable/c/723ac5ab2891b6c10dd6cc78ef5456af593490ebRefgit.kernel.org/stable/c/8015ef9e8a0ee5cecfd0cb6805834d007ab26f86Refgit.kernel.org/stable/c/8423f0b6d513b259fdab9c9bf4aaa6188d054c2dRefgit.kernel.org/stable/c/fce793a056c604b41a298317cf704dae255f1b36

How CyberStrike helps

Frequently asked questions

What is CVE-2022-49733?

CVE-2022-49733 is a high-severity vulnerability. It was published on March 2, 2025 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2022-49733?

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-2022-49733?

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-2022-49733?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-49733 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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