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CVE-2021-47096

4.0 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: ALSA: rawmidi - fix the uninitalized user_pversion The user_pversion was uninitialized for the user space file structure in the…

Published Mar 4, 2024CWE-908EPSS 0.21%

Overview

CVE-2021-47096 is a medium-severity vulnerability. It was published on March 4, 2024 and has a CVSS 3.1 base score of 4.0 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 4.0, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

ALSA: rawmidi - fix the uninitalized user_pversion

The user_pversion was uninitialized for the user space file structure

in the open function, because the file private structure use

kmalloc for the allocation.

The kernel ALSA sequencer code clears the file structure, so no additional

fixes are required.

BugLink: https://github.com/alsa-project/alsa-lib/issues/178

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/39a8fc4971a00d22536aeb7d446ee4a97810611bRefgit.kernel.org/stable/c/b398fcbe4de1e1100867fdb6f447c6fbc8fe7085Refgit.kernel.org/stable/c/39a8fc4971a00d22536aeb7d446ee4a97810611bRefgit.kernel.org/stable/c/b398fcbe4de1e1100867fdb6f447c6fbc8fe7085

How CyberStrike helps

Frequently asked questions

What is CVE-2021-47096?

CVE-2021-47096 is a medium-severity vulnerability. It was published on March 4, 2024 and has a CVSS 3.1 base score of 4.0 (MEDIUM).

How severe is CVE-2021-47096?

This vulnerability has a CVSS 3.1 base score of 4.0, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2021-47096?

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-2021-47096?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-47096 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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