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CVE-2021-47620

8.1 · HIGH

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: refactor malicious adv data check Check for out-of-bound read was being performed at the end of while num_reports lo…

Published Jun 20, 2024CWE-125EPSS 0.32%

Overview

CVE-2021-47620 is a high-severity vulnerability. It was published on June 20, 2024 and has a CVSS 3.1 base score of 8.1 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. 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:

Bluetooth: refactor malicious adv data check

Check for out-of-bound read was being performed at the end of while

num_reports loop, and would fill journal with false positives. Added

check to beginning of loop processing so that it doesn't get checked

after ptr has been advanced.

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/305e92f525450f3e1b5f5c9dc7eadb152d66a082Refgit.kernel.org/stable/c/5a539c08d743d9910631448da78af5e961664c0eRefgit.kernel.org/stable/c/5c968affa804ba98c3c603f37ffea6fba618025eRefgit.kernel.org/stable/c/7889b38a7f21ed19314f83194622b195d328465cRefgit.kernel.org/stable/c/835d3706852537bf92eb23eb8635b8dee0c0aa67Refgit.kernel.org/stable/c/83d5196b65d1b29e27d7dd16a3b9b439fb1d2dbaRefgit.kernel.org/stable/c/8819f93cd4a443dfe547aa622b21f723757df3fbRefgit.kernel.org/stable/c/899663be5e75dc0174dc8bda0b5e6826edf0b29aRefgit.kernel.org/stable/c/bcea886771c3f22a590c8c8b9139a107bd7f1e1cRefgit.kernel.org/stable/c/305e92f525450f3e1b5f5c9dc7eadb152d66a082

How CyberStrike helps

Frequently asked questions

What is CVE-2021-47620?

CVE-2021-47620 is a high-severity vulnerability. It was published on June 20, 2024 and has a CVSS 3.1 base score of 8.1 (HIGH).

How severe is CVE-2021-47620?

This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. 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-2021-47620?

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-2021-47620?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-47620 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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