CVE-2023-52624: Vulnerability in linux-libc-dev - Wake DMCUB before executing GPINT commands
Summary
CVE-2023-52624: In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Wake DMCUB before executing GPINT commands [Why] DMCUB can be in idle when we attempt to interface with the HW through the GPINT mailbo... Affects linux versions 5.10.103-1 – 6.9.9-1. No fix is published. How to fix ↓
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Background
The linux-libc-dev package is a development package for the Linux kernel. It provides the necessary header files and libraries for compiling programs that use kernel interfaces. This package is an essential component for developers working on Linux-based systems. The vulnerability affects version 6.1.90-1 of the linux-libc-dev package.
Vulnerability Detail
The vulnerability in the linux-libc-dev package is related to the drm/amd/display component of the Linux kernel. The issue arises when attempting to interface with the hardware through the GPINT mailbox while the DMCUB (Display Microcontroller Unit Block) is in idle mode. This can lead to a system hang. To address this, the developers have introduced the dc_wake_and_execute_gpint() function, which wakes the DMCUB, executes the GPINT commands, and puts the DMCUB back to sleep if the execution is successful.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
No specific workaround has been mentioned for this vulnerability.
Conclusion
The linux-libc-dev package version 6.1.90-1 is affected by a vulnerability that can lead to a system hang when interacting with the hardware through the GPINT mailbox. To mitigate this issue, it is recommended to update the package to a version that includes the patch for CVE-2023-52624. For further support on vulnerability remediation, you can contact DevNack.com.
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FAQ
The linux-libc-dev package is a development package for the Linux kernel. It provides the necessary header files and libraries for compiling programs that use kernel interfaces.
The drm/amd/display component in the Linux kernel is responsible for managing display-related functionality for AMD graphics cards.
DMCUB stands for Display Microcontroller Unit Block. It is a component in the AMD graphics card architecture.
The vulnerability can result in a system hang when attempting to interface with the hardware through the GPINT mailbox while the DMCUB is in idle mode.
You can update the linux-libc-dev package by using the package manager of your Linux distribution or by obtaining the updated package from the official Debian repositories.
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