Avoid HDCP over-read and corruption in drm/amd/display
Summary
GSD-2021-1001297: drm/amd/display: Avoid HDCP over-read and corruption. Affects Kernel versions < c5b518f4b98dbb2bc31b6a55e6aaa1e0e2948f2e. No fix is published. How to fix ↓
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Background
The drm/amd/display package is a component of the Linux Kernel that handles display functionality for AMD graphics cards. It is responsible for managing the display output, including features like High-bandwidth Digital Content Protection (HDCP). HDCP is a security mechanism used to protect copyrighted content transmitted over digital interfaces. This vulnerability in the drm/amd/display package allows for HDCP over-read and corruption, potentially leading to unauthorized access to protected content or display issues.
Vulnerability Detail
The vulnerability in the drm/amd/display package arises from a flaw that allows HDCP over-read and corruption. HDCP is designed to prevent unauthorized interception or copying of copyrighted content transmitted over digital interfaces. However, due to this vulnerability, an attacker may be able to read HDCP data beyond the intended boundaries, potentially accessing protected content without proper authorization. Additionally, the corruption of HDCP data can result in display issues or disruptions. The impact and attack plausibility of this vulnerability have not been proven yet.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no specific workaround mentioned for this vulnerability.
Conclusion
The vulnerability in the drm/amd/display package that allows HDCP over-read and corruption can potentially lead to unauthorized access to protected content or display issues. It is crucial to update the Linux Kernel to version v5.10.51 or later to address this vulnerability. For further support on vulnerability remediation, you can reach out to DevNack.com.
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FAQ
The impact of this vulnerability could potentially allow unauthorized access to protected content or result in display issues due to HDCP data corruption.
You can use Vulert's playground at Vulert Scanner to check if your system is affected by this vulnerability. Vulert monitors and alerts for open-source vulnerabilities in software using a manifest file like package-lock.json.
As of now, there is no known exploit for this vulnerability. However, it is important to apply the recommended fix to mitigate any potential risks.
The vulnerability is present in versions of the Linux Kernel prior to v5.10.51. Updating to the fixed version will address the vulnerability.
The remote exploitability of this vulnerability has not been determined yet. However, it is advisable to apply the fix as a precautionary measure.
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