Vulnerability in Kernel: drm_master_release() Pointer Access
Summary
GSD-2021-1000842: drm: Lock pointer access in drm_master_release(). Affects Kernel versions < 8e250a134c8fe2a945d10b421d0ccb54e85d8683. No fix is published. How to fix ↓
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Background
The Kernel is a critical component of the Linux operating system that acts as a bridge between the hardware and software layers. It provides essential functionalities, such as device drivers, memory management, and process scheduling. The drm_master_release() function is part of the Direct Rendering Manager (DRM) subsystem in the Kernel, which handles graphics-related operations. This vulnerability specifically affects the drm_master_release() function, which is responsible for releasing a master file descriptor for a DRM device.
The vulnerability allows an attacker to access a locked pointer in the drm_master_release() function, potentially leading to unauthorized access or modification of sensitive data. The impact and attack plausibility of this vulnerability have not been proven yet.
Vulnerability Detail
The vulnerability lies in the drm_master_release() function within the Kernel's DRM subsystem. By exploiting this vulnerability, an attacker could gain unauthorized access to a locked pointer, potentially leading to the compromise of sensitive data or the execution of arbitrary code. The exact technical details and attack vectors are yet to be determined.
This vulnerability has been addressed in the Linux Kernel version v4.9.273 by commit 8e250a134c8fe2a945d10b421d0ccb54e85d8683.
How To Fix
No fixed version is published for this vulnerability.
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Conclusion
The vulnerability in the Kernel's drm_master_release() function poses a potential risk of unauthorized access and data manipulation. It is crucial to update the Linux Kernel to version v4.9.273 or later to mitigate this vulnerability. For further assistance or support in vulnerability remediation, please contact DevNack.com.
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FAQ
The impact of this vulnerability is yet to be determined. However, it could potentially allow an attacker to access locked pointers and manipulate sensitive data or execute arbitrary code.
There is no evidence of this vulnerability being exploited in the wild at the moment. However, it is always recommended to apply security patches promptly to mitigate potential risks.
No, this vulnerability is fixed in the Linux Kernel version v4.9.273 and later. Users should ensure they are running an updated version of the Kernel to mitigate the risk.
No specific workaround has been provided for this vulnerability. It is recommended to update the Kernel to the patched version.
You can find more information about this vulnerability in the Open Source Vulnerability Database (OSVDB) entry: https://github.com/cloudsecurityalliance/gsd-database/blob/main/2021/1000xxx/GSD-2021-1000842.json
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