Deadlock on DSI device attach error in drm/vc4
Summary
GSD-2022-1000415: drm/vc4: Fix deadlock on DSI device attach error. Affects Kernel versions < 770d1ba9a8201ce9bee0946eb03746449b6f3b80. No fix is published. How to fix ↓
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Background
The drm/vc4 package is a component of the Linux Kernel that provides support for the VC4 graphics driver used in Broadcom VideoCore IV GPUs. This driver enables graphics rendering and display functionality on devices that utilize these GPUs. The DSI (Display Serial Interface) is a communication protocol used for connecting displays to the GPU. The DSI device attach error is a vulnerability that can lead to a deadlock in the system when encountering certain conditions during the attachment of a DSI device.
Vulnerability Detail
The vulnerability arises in the drm/vc4 package when handling errors during the attachment of a DSI device. Under specific circumstances, if an error occurs during this process, it can result in a deadlock, causing the system to become unresponsive. This vulnerability can be exploited by an attacker to disrupt the normal operation of the affected system. It is important to note that the impact and attack plausibility of this vulnerability have not been proven.
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 drm/vc4 that causes a deadlock on DSI device attach error has been addressed in the Linux Kernel version v5.15.24. It is recommended to update the Linux Kernel to this version or a later version that includes the fix. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The drm/vc4 package is a component of the Linux Kernel that provides support for the VC4 graphics driver used in Broadcom VideoCore IV GPUs.
DSI (Display Serial Interface) is a communication protocol used for connecting displays to the GPU.
A deadlock is a situation where two or more processes are unable to proceed because each is waiting for the other to release a resource.
This vulnerability can be exploited by an attacker to disrupt the normal operation of the affected system.
No, the impact and attack plausibility of this vulnerability have not been proven.
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