Vulnerability in drm/amd/display Package: Add Affected CRTCs to Atomic State for DSC MST Unplug
Summary
GSD-2022-1001856: drm/amd/display: Add affected crtcs to atomic state for dsc mst unplug. Affects Kernel versions >= 44be939ff7ac5858f0dbd8a2a4af1fe198e14db1, < 0f47edc22c2b7e4c1903d74c3992f09db9453d11. 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 provides the necessary drivers and interfaces for managing and controlling the display output. This vulnerability specifically affects the handling of Display Stream Compression (DSC) Multi-Stream Transport (MST) unplug events. DSC is a feature that allows for the compression of display data, reducing bandwidth requirements. MST enables the connection of multiple displays through a single DisplayPort connection. The vulnerability arises from a missing step in the atomic state update process when handling DSC MST unplug events.
Vulnerability Detail
The vulnerability occurs due to a missing step in the atomic state update process when handling DSC MST unplug events in the drm/amd/display package. This omission can lead to inconsistent or incorrect state information, potentially resulting in display issues or system instability. An attacker could potentially exploit this vulnerability to manipulate the display output or trigger a denial-of-service condition. The vulnerability was introduced in version v5.6 of the Linux Kernel and has been fixed in version v5.15.33.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
No specific workaround has been provided for this vulnerability.
Conclusion
The vulnerability in the drm/amd/display package, specifically related to the handling of DSC MST unplug events, can lead to display issues or system instability. It is crucial to update the Linux Kernel to version v5.15.33 or later to mitigate this vulnerability. For further support and assistance with vulnerability remediation, please contact DevNack.com.
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FAQ
The vulnerability can result in display issues or system instability, potentially allowing an attacker to manipulate the display output or trigger a denial-of-service condition.
You can use the Vulert Playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Simply upload your package-lock.json file, and Vulert will analyze it for any open-source vulnerabilities, including this one.
There is currently no known exploit for this vulnerability. However, it is still recommended to update to the fixed version of the Linux Kernel to mitigate any potential risks.
This vulnerability requires local access to the affected system. It cannot be exploited remotely.
Updating to the fixed version of the Linux Kernel is the primary recommended security measure to protect against this vulnerability. Additionally, it is always advisable to follow best practices for system security, such as regularly applying security updates and patches.
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