Vulnerability in Kernel Package: drm/aperture
Summary
GSD-2022-1004375: drm/aperture: Run fbdev removal before internal helpers. Affects Kernel versions >= 13d28e0c79cbf69fc6f145767af66905586c1249, < 31f351eb534e889d11cd149de547d99eb5a15c64. No fix is published. How to fix ↓
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Background
The Kernel package is a fundamental component of the Linux operating system, responsible for managing the system's core functionality. It provides essential services and interfaces for hardware devices, including graphics cards. The drm/aperture module within the Kernel package handles memory allocation for graphics processing. This vulnerability affects the drm/aperture module and its interaction with the fbdev subsystem.
Vulnerability Detail
The vulnerability in drm/aperture arises from the improper sequence of operations during the removal of the fbdev subsystem. Specifically, the fbdev removal process should occur before internal helpers are executed. However, due to a coding error, the removal is performed after the internal helpers, leading to potential security issues. While the exact impact and attack vectors have not been proven, this vulnerability could potentially allow malicious actors to exploit the system's graphics processing functionality.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As a temporary workaround, users can disable the fbdev subsystem manually. This can be achieved by modifying the Kernel configuration and rebuilding the Kernel without fbdev support. However, this workaround requires advanced knowledge of Kernel configuration and may not be feasible for all users.
Conclusion
In conclusion, the vulnerability in the Kernel package's drm/aperture module poses a potential security risk related to the improper sequence of operations during the removal of the fbdev subsystem. To mitigate this vulnerability, it is recommended to update the Kernel package to version v5.15.56 or later. Alternatively, users can disable the fbdev subsystem manually as a temporary workaround. For further support and assistance with vulnerability remediation, please contact DevNack.com.
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FAQ
The exact impact of this vulnerability is not yet proven. However, it could potentially allow attackers to exploit the system's graphics processing functionality.
You can use the Vulert Playground at Vulert Scanner to check if your system is affected by this vulnerability. Simply upload your package-lock.json file, and Vulert will provide real-time alerts for open-source vulnerabilities, including this one.
While updating the Kernel package is the recommended solution, you can temporarily mitigate the vulnerability by disabling the fbdev subsystem manually. However, this workaround requires advanced knowledge of Kernel configuration and may not be feasible for all users.
At the time of this report, no known exploits for this vulnerability have been identified. However, it is crucial to apply the recommended fix or workaround to ensure system security.
For more details about this vulnerability, you can refer to the vulnerability report in the GSD Database at https://github.com/cloudsecurityalliance/gsd-database/blob/main/2022/1004xxx/GSD-2022-1004375.json.
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