Vulnerability in dma-buf/sync_file in Kernel
Summary
GSD-2021-1001318: dma-buf/sync_file: Don't leak fences on merge failure. Affects Kernel versions >= a02b9dc90d844cc7df7b63264e7920cc425052d9, < 41f45e91c92c8480242ea448d54e28c753b13902. No fix is published. How to fix ↓
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Background
The Kernel is a fundamental component of the Linux operating system that manages communication between hardware and software. It provides essential services and functions to enable the proper functioning of the system. The dma-buf/sync_file subsystem is responsible for handling synchronization between different devices and processes using Direct Memory Access (DMA) buffers. This vulnerability affects the dma-buf/sync_file subsystem in the Kernel.
Vulnerability Detail
The vulnerability in dma-buf/sync_file allows for the leakage of fences on merge failure. When merging synchronization files, if the operation fails, the fences are not properly released, leading to a resource leak. This vulnerability could potentially be exploited by an attacker to exhaust system resources, resulting in a denial-of-service condition. It is important to note that the impact and attack plausibility of this vulnerability have not been proven.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no specific workaround mentioned for this vulnerability.
Conclusion
In conclusion, the vulnerability in dma-buf/sync_file in the Kernel can lead to the leakage of fences on merge failure, potentially resulting in resource exhaustion and a denial-of-service condition. It is crucial to update the Linux Kernel to the latest version to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The dma-buf/sync_file subsystem in the Kernel is responsible for handling synchronization between different devices and processes using Direct Memory Access (DMA) buffers.
The impact of this vulnerability is the potential leakage of fences on merge failure, which can lead to resource exhaustion and a denial-of-service condition.
To fix this vulnerability, update the Linux Kernel to version v5.4.135 or later.
No specific workaround has been mentioned for this vulnerability.
For more details about this vulnerability, refer to the source link provided in the database_specific section of the vulnerability details.
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