Critical Vulnerability in Linux Kernel: drm/amd/display NULL Check Issue
Summary
DEBIAN-CVE-2024-26948: In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Add a dc_state NULL check in dc_state_release [How] Check wheather state is NULL before releasing it. Affects linux versions < 6.8.9-1. Fixed in 6.8.9-1. 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, responsible for managing hardware and system resources. It provides essential services for all other parts of the operating system. The kernel is highly complex and is continuously updated to address security vulnerabilities and improve functionality. This specific vulnerability affects the drm/amd/display subsystem, which is responsible for handling display graphics in AMD hardware. The vulnerability arises from a lack of proper checks when releasing resources, which could lead to system instability or crashes.
Vulnerability Detail
In the Linux kernel, a vulnerability has been identified in the drm/amd/display subsystem where a NULL check for the dc_state variable is missing in the dc_state_release function. This oversight can lead to dereferencing a NULL pointer, potentially causing a system crash or undefined behavior. The vulnerability is classified as critical due to its potential impact on system stability and security, particularly for systems utilizing AMD graphics hardware.
How To Fix
Minimum fixed version
6.8.9-1
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, no specific workarounds are provided for this vulnerability. It is recommended to apply the patch as soon as it is available to mitigate any risks.
Conclusion
The identified vulnerability in the Linux kernel's drm/amd/display subsystem poses a significant risk to system stability and security. Users are strongly advised to update to the patched version 6.8.9-1 to mitigate potential impacts. Regular monitoring for vulnerabilities using tools like Vulert can help maintain system security.
See every vulnerability recorded for linux →
FAQ
The vulnerability is a missing NULL check in the Linux kernel's drm/amd/display subsystem, which can lead to system crashes.
You can use the Vulert platform to monitor and alert for open-source vulnerabilities in your software. Visit Vulert Scanner to check if your application is affected.
If exploited, this vulnerability could cause system instability, crashes, or undefined behavior, particularly on systems using AMD graphics.
Yes, the patched version of the Linux kernel is 6.8.9-1. Users should update to this version to mitigate the vulnerability.
While no specific workarounds are available, it is crucial to prioritize updating your kernel to the patched version as soon as possible to reduce risk.
References
Related vulnerabilities
Recent vulnerabilities recorded for linux.
