Critical Vulnerability in Linux Kernel: DC_LOG_DC Misplacement in AMD Display Driver
Summary
DEBIAN-CVE-2024-46776: In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Run DC_LOG_DC after checking link->link_enc [WHAT] The DC_LOG_DC should be run after link->link_enc is checked, not before. Affects linux versions < 6.10.11-1. Fixed in 6.10.11-1. 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 a core component of the operating system that manages hardware and system resources. It provides essential services for all other parts of the operating system and is critical for system stability and performance. The kernel is open-source and widely used across various distributions, including Debian. This vulnerability affects the AMD display driver within the kernel, specifically in the handling of display link encoders.
Vulnerability Detail
In the Linux kernel, a vulnerability has been identified in the AMD display driver related to the improper execution order of the DC_LOG_DC function. This function should be executed after verifying the link encoder (link->link_enc) to prevent potential reverse null pointer dereference issues. The oversight could lead to system instability or crashes, impacting user experience and system reliability.
How To Fix
Minimum fixed version
6.10.11-1
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. The best course of action is to apply the patch by updating the kernel as mentioned above.
Conclusion
The vulnerability identified in the Linux kernel's AMD display driver highlights the importance of maintaining up-to-date software to ensure system security and reliability. Users are encouraged to apply the necessary updates to mitigate any risks associated with this issue.
See every vulnerability recorded for linux →
FAQ
The vulnerability is a misplacement of the DC_LOG_DC function call in the AMD display driver, which could lead to system instability.
You can use the Vulert platform to monitor and alert for open-source vulnerabilities in your software by analyzing your manifest file. Visit Vulert Scanner to check if your application is affected.
If exploited, this vulnerability could lead to crashes or instability in systems using the affected AMD display driver.
While the primary risk is system instability, it is always advisable to back up important data regularly to mitigate any potential risks.
It is recommended to regularly check for updates to your Linux kernel and apply them promptly to ensure security and stability.
References
Related vulnerabilities
Recent vulnerabilities recorded for linux.
