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CVE-2021-47405

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: HID: usbhid: free raw_report buffers in usbhid_stop Free the unsent raw_report buffers when the device is removed.

Published May 21, 2024CWE-401EPSS 0.25%

Overview

CVE-2021-47405 is a medium-severity vulnerability. It was published on May 21, 2024 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:

HID: usbhid: free raw_report buffers in usbhid_stop

Free the unsent raw_report buffers when the device is removed.

Fixes a memory leak reported by syzbot at:

https://syzkaller.appspot.com/bug?id=7b4fa7cb1a7c2d3342a2a8a6c53371c8c418ab47

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/2b704864c92dcec2b295f276fcfbfb81d9831f81Refgit.kernel.org/stable/c/764ac04de056801dfe52a716da63f6e7018e7f3bRefgit.kernel.org/stable/c/7ce4e49146612261265671b1d30d117139021030Refgit.kernel.org/stable/c/965147067fa1bedff3ae1f07ce3f89f1a14d2df3Refgit.kernel.org/stable/c/c3156fea4d8a0e643625dff69a0421e872d1fdaeRefgit.kernel.org/stable/c/efc5c8d29256955cc90d8d570849b2d6121ed09fRefgit.kernel.org/stable/c/f7744fa16b96da57187dc8e5634152d3b63d72deRefgit.kernel.org/stable/c/f7ac4d24e1610b92689946fa88177673f1e88a3fRefgit.kernel.org/stable/c/2b704864c92dcec2b295f276fcfbfb81d9831f81Refgit.kernel.org/stable/c/764ac04de056801dfe52a716da63f6e7018e7f3b

How CyberStrike helps

Frequently asked questions

What is CVE-2021-47405?

CVE-2021-47405 is a medium-severity vulnerability. It was published on May 21, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2021-47405?

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-2021-47405?

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-2021-47405?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-47405 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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