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CVE-2021-47651

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: soc: qcom: rpmpd: Check for null return of devm_kcalloc Because of the possible failure of the allocation, data->domains might…

Published Feb 26, 2025CWE-476EPSS 0.25%

Overview

CVE-2021-47651 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:

soc: qcom: rpmpd: Check for null return of devm_kcalloc

Because of the possible failure of the allocation, data->domains might

be NULL pointer and will cause the dereference of the NULL pointer

later.

Therefore, it might be better to check it and directly return -ENOMEM

without releasing data manually if fails, because the comment of the

devm_kmalloc() says "Memory allocated with this function is

automatically freed on driver detach.".

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/31b5124d742969ea8bf7a1360596f548ca23e770Refgit.kernel.org/stable/c/5a811126d38f9767a20cc271b34db7c8efc5a46cRefgit.kernel.org/stable/c/724376c30af5a57686b223dbcd6188e07d2a1de2Refgit.kernel.org/stable/c/755dbc3d73789ac9f0017c729abf5e4b153bf799Refgit.kernel.org/stable/c/84b89fa877ad576e9ee8130f412cfd592f274508Refgit.kernel.org/stable/c/b5d6eba71997b6d661935d2b15094ac7f9f6132d

How CyberStrike helps

Frequently asked questions

What is CVE-2021-47651?

CVE-2021-47651 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-2021-47651?

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-2021-47651?

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-2021-47651?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-47651 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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