Critical Vulnerability in Linux Kernel: drm/xe Lock Management Issue
Summary
DEBIAN-CVE-2024-53086: In the Linux kernel, the following vulnerability has been resolved: drm/xe: Drop VM dma-resv lock on xe_sync_in_fence_get failure in exec IOCTL Upon failure all locks need to be dropped before returning to the user. Affects linux versions < 6.11.9-1. Fixed in 6.11.9-1. How to fix ↓
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Background
The Linux kernel is the core component of many operating systems, providing essential services for hardware management and system resources. It is widely used in various distributions, including Debian. The kernel's functionality includes process management, memory management, device drivers, and system calls. This vulnerability specifically affects the drm/xe subsystem, which is responsible for managing graphics processing units (GPUs) and their associated resources. The vulnerability arises from improper handling of locks during error conditions, potentially leading to system instability or security issues.
Vulnerability Detail
In the Linux kernel, a vulnerability has been identified in the drm/xe subsystem related to the handling of locks during the execution of IOCTL commands. Specifically, when the xe_sync_in_fence_get operation fails, the VM dma-resv lock is not properly released, which can lead to deadlocks or other unintended behaviors. This issue was introduced in earlier versions of the kernel and has been addressed in the patch version 6.11.9-1. The vulnerability poses risks such as system crashes or unauthorized access to system resources, making it critical for users to address it promptly.
How To Fix
Minimum fixed version
6.11.9-1
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, there are no specific workarounds documented for this vulnerability. The best course of action is to apply the patch as soon as it is available.
Conclusion
The vulnerability identified in the Linux kernel's drm/xe subsystem poses significant risks to system stability and security. Users are strongly advised to update to the patched version 6.11.9-1 to protect their systems. Regular monitoring for vulnerabilities using tools like Vulert can help maintain system integrity and security.
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FAQ
The vulnerability involves improper lock management in the drm/xe subsystem of the Linux kernel, which can lead to system instability.
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 lead to system crashes, deadlocks, or unauthorized access to system resources.
Yes, a patch has been released in version 6.11.9-1 of the Linux kernel to address this issue.
While there are no specific workarounds, it is crucial to plan for an update as soon as possible to mitigate the risks associated with this vulnerability.
References
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