Critical Memory Management Vulnerability in Linux Kernel: drm/amd/display Allocation Failure
Summary
DEBIAN-CVE-2024-53133: In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Handle dml allocation failure to avoid crash [Why] In the case where a dml allocation fails for any reason, the current state's dml con... Affects linux versions < 6.11.10-1. Fixed in 6.11.10-1. How to fix ↓
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Background
The Linux kernel is the core component of many operating systems, including Debian. It manages hardware resources and provides essential services for software applications. The kernel is crucial for system stability and performance. This vulnerability specifically affects the drm/amd/display subsystem, which is responsible for managing display outputs and graphics rendering. The vulnerability arises from improper handling of memory allocation failures, which can lead to system crashes and instability.
Vulnerability Detail
In the Linux kernel, a vulnerability has been identified in the drm/amd/display subsystem related to memory allocation failures. When a Direct Memory Access (DMA) allocation fails, the existing display memory contexts become invalid. This can lead to subsequent calls to the dc_state_copy_internal function attempting to copy invalid memory, resulting in a double free error. This vulnerability can cause system crashes and potentially allow for arbitrary code execution if exploited.
How To Fix
Minimum fixed version
6.11.10-1
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 in the Linux kernel's drm/amd/display subsystem poses significant risks to system stability and security. Users are strongly encouraged to update to the patched version to protect their systems from potential exploitation. Utilizing tools like Vulert can help in monitoring and managing open-source vulnerabilities effectively.
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FAQ
The vulnerability involves improper handling of memory allocation failures in the drm/amd/display subsystem of the Linux kernel, leading to potential system crashes.
You can use the Vulert platform to check if your application is affected by this vulnerability by analyzing your manifest file. Visit Vulert Scanner for more details.
If exploited, this vulnerability can lead to system crashes and may allow attackers to execute arbitrary code, compromising system integrity.
Yes, a patch is available in the form of the Linux kernel version 6.11.10-1. It is recommended to update to this version to fix the vulnerability.
While there are no specific workarounds, it is crucial to monitor the situation and apply the patch as soon as possible to mitigate risks.
References
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