Critical Vulnerability in Linux Kernel: drm/amd/display Hang/Underflow Issue
Summary
DEBIAN-CVE-2023-52671: In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Fix hang/underflow when transitioning to ODM4:1 [Why] Under some circumstances, disabling an OPTC and attempting to reclaim its OPP(s)... Affects linux versions < 6.7.7-1. Fixed in 6.7.7-1. How to fix ↓
Check if this vulnerability affects your application
Upload a manifest or SBOM and we'll show whether you're affected, plus every other risky package in the same scan.
No signup required · Results in about 60 seconds
Background
The Linux kernel is the core component of many operating systems, managing hardware and system resources. It provides essential services for all other software running on a computer. The kernel is known for its stability and performance, but like any complex software, it can have vulnerabilities. This specific vulnerability affects the drm/amd/display subsystem, which is responsible for managing display outputs in AMD graphics hardware.
Vulnerability Detail
In the Linux kernel, a vulnerability has been identified in the drm/amd/display subsystem that can lead to a hang or underflow when transitioning to ODM4:1. This occurs under specific conditions when an OPTC (Output Pixel Timing Controller) is disabled while attempting to reclaim its OPPs (Operating Performance Points) for another OPTC. If the OPPs are not properly disconnected from the disabled OPTC, it can result in system instability, potentially leading to crashes or unresponsive states.
How To Fix
Minimum fixed version
6.7.7-1
This is the first release that contains the fix.
sudo apt-get install --only-upgrade linuxTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
Currently, there are no specific workarounds provided for this vulnerability. It is advisable to apply the patch as soon as it is available to mitigate any risks associated with this issue.
Conclusion
The vulnerability identified in the Linux kernel's drm/amd/display subsystem poses a significant risk to system stability. It is essential for users to update their systems to the patched version to mitigate potential issues. Utilizing tools like Vulert can help monitor for such vulnerabilities effectively.
See every vulnerability recorded for linux →
FAQ
The vulnerability involves a hang or underflow in the drm/amd/display subsystem of the Linux kernel when transitioning to ODM4:1.
You can use Vulert, which monitors and alerts for open-source vulnerabilities in real-time. By using the Vulert playground, you can check if your application is affected without any signup.
If exploited, this vulnerability could lead to system instability, crashes, or unresponsive states, affecting the overall performance of the system.
Yes, a patch is available in version 6.7.7-1 of the Linux package. It is crucial to update to this version or later to mitigate the vulnerability.
While there are no specific workarounds, it is recommended to monitor the situation and apply the patch as soon as possible to ensure system security.
References
Related vulnerabilities
Recent vulnerabilities recorded for linux.
