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CVE-2024-40916

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: drm/exynos: hdmi: report safe 640x480 mode as a fallback when no EDID found When reading EDID fails and driver reports no modes…

Published Jul 12, 2024EPSS 0.29%

Overview

CVE-2024-40916 is a medium-severity vulnerability. It was published on July 12, 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/exynos: hdmi: report safe 640x480 mode as a fallback when no EDID found

When reading EDID fails and driver reports no modes available, the DRM

core adds an artificial 1024x786 mode to the connector. Unfortunately

some variants of the Exynos HDMI (like the one in Exynos4 SoCs) are not

able to drive such mode, so report a safe 640x480 mode instead of nothing

in case of the EDID reading failure.

This fixes the following issue observed on Trats2 board since commit

13d5b040363c ("drm/exynos: do not return negative values from .get_modes()"):

[drm] Exynos DRM: using 11c00000.fimd device for DMA mapping operations

exynos-drm exynos-drm: bound 11c00000.fimd (ops fimd_component_ops)

exynos-drm exynos-drm: bound 12c10000.mixer (ops mixer_component_ops)

exynos-dsi 11c80000.dsi: [drm:samsung_dsim_host_attach] Attached s6e8aa0 device (lanes:4 bpp:24 mode-flags:0x10b)

exynos-drm exynos-drm: bound 11c80000.dsi (ops exynos_dsi

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/35bcf16b4a28c10923ff391d14f6ed0ae471ee5fRefgit.kernel.org/stable/c/4dfffb50316c761c59386c9b002a10ac6d7bb6c9Refgit.kernel.org/stable/c/510a6c0dfa6ec61d07a4b64698d8dc60045bd632Refgit.kernel.org/stable/c/6d6bb258d886e124e5a5328e947b36fdcb3a6028Refgit.kernel.org/stable/c/799d4b392417ed6889030a5b2335ccb6dcf030abRefgit.kernel.org/stable/c/c3ca24dfe9a2b3f4e8899af108829b0f4b4b15ecRefgit.kernel.org/stable/c/e23f2eaf51ecb6ab4ceb770e747d50c1db2eb222Refgit.kernel.org/stable/c/35bcf16b4a28c10923ff391d14f6ed0ae471ee5fRefgit.kernel.org/stable/c/4dfffb50316c761c59386c9b002a10ac6d7bb6c9Refgit.kernel.org/stable/c/510a6c0dfa6ec61d07a4b64698d8dc60045bd632

How CyberStrike helps

Frequently asked questions

What is CVE-2024-40916?

CVE-2024-40916 is a medium-severity vulnerability. It was published on July 12, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-40916?

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-2024-40916?

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-2024-40916?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-40916 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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