Null Pointer Dereference in drm/msm Package
Summary
GSD-2021-1001956: drm/msm: Fix null pointer dereference on pointer edp. Affects Kernel versions >= ab5b0107ccf3821a6837b0f2819270d6fa0b278f, < 0cd063aa0a09822cc1620fc59a67fe2f9f6338ac. No fix is published. How to fix ↓
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Background
The drm/msm package is a component of the Linux Kernel that provides support for graphics and display functionality on Qualcomm Snapdragon processors. It includes drivers for various display interfaces, such as HDMI, DisplayPort, and Embedded DisplayPort (eDP). The package is responsible for managing the communication between the graphics hardware and the operating system, enabling the rendering and output of graphics on compatible devices.
Vulnerability Detail
The vulnerability identified as GSD-2021-1001956 in the drm/msm package involves a null pointer dereference on the 'edp' pointer. This vulnerability can be exploited by an attacker to cause a denial-of-service (DoS) condition or potentially execute arbitrary code. The null pointer dereference occurs when the 'edp' pointer is accessed without proper validation, leading to a crash or system instability. 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. However, users can consider applying general security best practices, such as keeping their systems up to date with the latest security patches and following recommended configuration guidelines.
Conclusion
The null pointer dereference vulnerability in the drm/msm package can potentially lead to a denial-of-service (DoS) condition or arbitrary code execution. It is crucial to update the Linux Kernel to version v4.14.252 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The impact of this vulnerability can range from a denial-of-service (DoS) condition to potential execution of arbitrary code. However, the actual impact and attack plausibility have not been proven yet.
You can use Vulert's playground at Vulert Scanner to check if your system is affected by this vulnerability. Vulert monitors and alerts in real-time for open-source vulnerabilities, using just 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 specific prerequisites for exploiting this vulnerability have not been disclosed. However, it is always recommended to keep your system up to date with the latest security patches to minimize the risk of exploitation.
You can find more information about this vulnerability in the GSD-2021-1001956 entry of the GSD database maintained by the Cloud Security Alliance. The link to the entry is available at: https://github.com/cloudsecurityalliance/gsd-database/blob/main/2021/1001xxx/GSD-2021-1001956.json
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