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CVE-2023-3161

5.5 · MEDIUM

A flaw was found in the Framebuffer Console (fbcon) in the Linux Kernel.

Published Jun 12, 2023CWE-1335EPSS 0.20%

Overview

CVE-2023-3161 is a medium-severity vulnerability. It was published on June 12, 2023 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

A flaw was found in the Framebuffer Console (fbcon) in the Linux Kernel. When providing font->width and font->height greater than 32 to fbcon_set_font, since there are no checks in place, a shift-out-of-bounds occurs leading to undefined behavior and possible denial of service.

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

Refbugzilla.redhat.com/show_bug.cgi?id=2213485GitHubgithub.com/torvalds/linux/commit/2b09d5d364986f724f17001ccfe4126b9b43a0beRefbugzilla.redhat.com/show_bug.cgi?id=2213485GitHubgithub.com/torvalds/linux/commit/2b09d5d364986f724f17001ccfe4126b9b43a0be

How CyberStrike helps

Frequently asked questions

What is CVE-2023-3161?

CVE-2023-3161 is a medium-severity vulnerability. It was published on June 12, 2023 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2023-3161?

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-2023-3161?

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-2023-3161?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-3161 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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