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CVE-2024-56683

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: drm/vc4: hdmi: Avoid hang with debug registers when suspended Trying to read /sys/kernel/debug/dri/1/hdmi1_regs when the hdmi i…

Published Dec 28, 2024EPSS 0.22%

Overview

CVE-2024-56683 is a medium-severity vulnerability. It was published on December 28, 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:

drm/vc4: hdmi: Avoid hang with debug registers when suspended

Trying to read /sys/kernel/debug/dri/1/hdmi1_regs

when the hdmi is disconnected results in a fatal system hang.

This is due to the pm suspend code disabling the dvp clock.

That is just a gate of the 108MHz clock in DVP_HT_RPI_MISC_CONFIG,

which results in accesses hanging AXI bus.

Protect against this.

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/0ea29bd7d9400d3629683244d609358ed1b12075Refgit.kernel.org/stable/c/16f351adf733a182224ad24916d7673aa6df02dfRefgit.kernel.org/stable/c/223ee2567a55e4f80315c768d2969e6a3b9fb23dRefgit.kernel.org/stable/c/74f21be9990a42dc2357bcf87a13e16c6998b90eRefgit.kernel.org/stable/c/c7d474974954d9af7e0092021223d58f2de128dfReflists.debian.org/debian-lts-announce/2025/03/msg00001.html

How CyberStrike helps

Frequently asked questions

What is CVE-2024-56683?

CVE-2024-56683 is a medium-severity vulnerability. It was published on December 28, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-56683?

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-2024-56683?

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-2024-56683?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-56683 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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