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CVE-2021-47645

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: media: staging: media: zoran: calculate the right buffer number for zoran_reap_stat_com On the case tmp_dcim=1, the index of bu…

Published Feb 26, 2025CWE-476EPSS 0.26%

Overview

CVE-2021-47645 is a medium-severity vulnerability. It was published on February 26, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. 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:

media: staging: media: zoran: calculate the right buffer number for zoran_reap_stat_com

On the case tmp_dcim=1, the index of buffer is miscalculated.

This generate a NULL pointer dereference later.

So let's fix the calcul and add a check to prevent this to reappear.

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/20811bbe685ca3eddd34b0c750860427d7030910Refgit.kernel.org/stable/c/20db2ed1e2f9fcd417fa67853e5154f0c2537d6cRefgit.kernel.org/stable/c/7e76f3ed7ab2ae026c6ef9cc23096a7554af8c52Refgit.kernel.org/stable/c/8dce4b265a5357731058f69645840dabc718c687Refgit.kernel.org/stable/c/bafec1a6ba4b187a7fcdcfce0faebdc623d4ef8e

How CyberStrike helps

Frequently asked questions

What is CVE-2021-47645?

CVE-2021-47645 is a medium-severity vulnerability. It was published on February 26, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2021-47645?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2021-47645?

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-2021-47645?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-47645 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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