Vulnerability in Kernel: mmmremap.c
Summary
GSD-2022-1002302: mmmremap.c: avoid pointless invalidate_range_start/end on mremap(old_size=0). Affects Kernel versions < e2c328c2a8f9de8b761bd4025b66c63120c55761. 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 functionalities such as process management, memory management, and device drivers. The vulnerability in mmmremap.c, a file within the Kernel, can lead to potential security risks.
Vulnerability Detail
The mmmremap.c vulnerability in the Kernel allows for an unnecessary invalidate_range_start/end operation during the mremap function when the old_size parameter is set to 0. This operation can result in performance degradation and unnecessary overhead. While the impact and attack plausibility have not been proven, it is crucial to address this vulnerability to ensure optimal system performance and security.
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
The mmmremap.c vulnerability in the Kernel can potentially lead to performance degradation and unnecessary overhead. It is recommended to update the Linux Kernel to version v4.19.238 or later to address this vulnerability. For further support on vulnerability remediation, you can contact DevNack.com.
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FAQ
The impact of this vulnerability is not yet proven, but it can potentially lead to performance degradation and unnecessary overhead in the system.
You can use Vulert Playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Vulert monitors and alerts in real-time for open-source vulnerabilities without requiring access to the code or installation.
Yes, the vulnerability is fixed in Linux Kernel version v4.19.238 by commit e2c328c2a8f9de8b761bd4025b66c63120c55761. Updating the Kernel to this version or later will address the vulnerability.
There are no known exploits for this vulnerability at the moment.
The vulnerability details are part of the GSD Database maintained by the Cloud Security Alliance (CSA).
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