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CVE-2023-6238

6.7 · MEDIUM

A buffer overflow vulnerability was found in the NVM Express (NVMe) driver in the Linux kernel.

Published Nov 21, 2023CWE-120EPSS 0.29%

Overview

CVE-2023-6238 is a medium-severity vulnerability. It was published on November 21, 2023 and has a CVSS 3.1 base score of 6.7 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.7, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

A buffer overflow vulnerability was found in the NVM Express (NVMe) driver in the Linux kernel. Only privileged user could specify a small meta buffer and let the device perform larger Direct Memory Access (DMA) into the same buffer, overwriting unrelated kernel memory, causing random kernel crashes and memory corruption.

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

Refaccess.redhat.com/security/cve/CVE-2023-6238Refbugzilla.redhat.com/show_bug.cgi?id=2250834Refaccess.redhat.com/security/cve/CVE-2023-6238Refbugzilla.redhat.com/show_bug.cgi?id=2250834

How CyberStrike helps

Frequently asked questions

What is CVE-2023-6238?

CVE-2023-6238 is a medium-severity vulnerability. It was published on November 21, 2023 and has a CVSS 3.1 base score of 6.7 (MEDIUM).

How severe is CVE-2023-6238?

This vulnerability has a CVSS 3.1 base score of 6.7, 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-2023-6238?

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-2023-6238?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-6238 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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