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CVE-2021-47057

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: crypto: sun8i-ss - Fix memory leak of object d when dma_iv fails to map In the case where the dma_iv mapping fails, the return…

Published Feb 29, 2024CWE-770EPSS 0.22%

Overview

CVE-2021-47057 is a medium-severity vulnerability. It was published on February 29, 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:

crypto: sun8i-ss - Fix memory leak of object d when dma_iv fails to map

In the case where the dma_iv mapping fails, the return error path leaks

the memory allocated to object d. Fix this by adding a new error return

label and jumping to this to ensure d is free'd before the return.

Addresses-Coverity: ("Resource leak")

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/617ec35ed51f731a593ae7274228ef2cfc9cb781Refgit.kernel.org/stable/c/6516cb852d704ff8d615de1f93cd443a99736c3dRefgit.kernel.org/stable/c/98b5ef3e97b16eaeeedb936f8bda3594ff84a70eRefgit.kernel.org/stable/c/e1f2d739849c3239df1ea3f97d40bade4b808410Refgit.kernel.org/stable/c/617ec35ed51f731a593ae7274228ef2cfc9cb781Refgit.kernel.org/stable/c/6516cb852d704ff8d615de1f93cd443a99736c3dRefgit.kernel.org/stable/c/98b5ef3e97b16eaeeedb936f8bda3594ff84a70eRefgit.kernel.org/stable/c/e1f2d739849c3239df1ea3f97d40bade4b808410

How CyberStrike helps

Frequently asked questions

What is CVE-2021-47057?

CVE-2021-47057 is a medium-severity vulnerability. It was published on February 29, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2021-47057?

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-2021-47057?

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-2021-47057?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-47057 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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