Vulnerability in Kernel: arm64: mm: Don't invalidate FROM_DEVICE buffers at start of DMA transfer
Summary
GSD-2022-1004754: arm64: mm: Don't invalidate FROM_DEVICE buffers at start of DMA transfer. Affects Kernel versions < 7b9c3bfbad2510478ac29221d2c40a09184ce6a1. No fix is published. How to fix ↓
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Background
The Kernel is a critical component of the Linux operating system that manages system resources and facilitates communication between hardware and software. It provides essential functions for memory management, process scheduling, device drivers, and more. The arm64 architecture is specifically designed for 64-bit ARM processors. In this context, the mm subsystem handles memory management operations. However, a vulnerability has been identified in the arm64 mm subsystem that involves the invalidation of FROM_DEVICE buffers at the start of a DMA (Direct Memory Access) transfer.
Vulnerability Detail
The vulnerability in the arm64 mm subsystem occurs when FROM_DEVICE buffers are invalidated at the beginning of a DMA transfer. This can lead to potential security risks, although the exact impact and attack plausibility have not been proven yet. The vulnerability has been assigned the ID GSD-2022-1004754. It is fixed in Linux Kernel version v5.4.201 by commit 7b9c3bfbad2510478ac29221d2c40a09184ce6a1. It is important to note that this vulnerability affects the Linux Kernel package.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
No workaround has been mentioned for this vulnerability.
Conclusion
In conclusion, the vulnerability in the arm64 mm subsystem of the Kernel can potentially lead to security risks. It is recommended to update the Linux Kernel to version v5.4.201 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The exact impact of this vulnerability is yet to be determined. However, it has the potential to pose security risks.
To fix this vulnerability, update the Linux Kernel to version v5.4.201 or later.
No workaround has been mentioned for this vulnerability.
For more details about this vulnerability, refer to the provided references link.
To prevent similar vulnerabilities in the future, it is crucial to regularly update the Linux Kernel and apply security patches as they become available.
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