Vulnerability in Kernel: mm/pages_alloc.c
Summary
GSD-2022-1001619: mm/pages_alloc.c: don't create ZONE_MOVABLE beyond the end of a node. Affects Kernel versions >= 2a1e274acf0b1c192face19a4be7c12d4503eaaf, < fde1dd4f4b3c29c605846777a92f2eb49d806f81. 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 memory management, process scheduling, and device drivers. The vulnerability in the mm/pages_alloc.c file affects the Kernel's memory allocation mechanism. This vulnerability allows the creation of ZONE_MOVABLE beyond the end of a node, potentially leading to security issues.
Vulnerability Detail
The vulnerability in mm/pages_alloc.c arises from the improper creation of ZONE_MOVABLE beyond the end of a node. This flaw was introduced in version v2.6.23 of the Linux Kernel and persists until version v5.16.19. An attacker could potentially exploit this vulnerability to gain unauthorized access, execute arbitrary code, or cause a denial-of-service condition. The impact and attack plausibility of this vulnerability have not been proven yet.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
No specific workaround has been provided for this vulnerability.
Conclusion
The vulnerability in the Kernel's mm/pages_alloc.c file poses a potential security risk due to the improper creation of ZONE_MOVABLE beyond the end of a node. To mitigate this vulnerability, it is advised to update the Linux Kernel to version v5.16.19 or later. For further support on vulnerability remediation, you can reach out to DevNack.com.
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FAQ
The impact of this vulnerability could range from unauthorized access to arbitrary code execution or denial-of-service attacks.
You can use Vulert Playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Simply upload your package-lock.json file to the playground and it will alert you in real-time if the vulnerability is present.
Yes, a patch is available in version v5.16.19 of the Linux Kernel. It is recommended to update to this version or a later one to fix the vulnerability.
The remote exploitability of this vulnerability has not been determined yet. However, it is always recommended to apply security updates promptly to mitigate potential risks.
There are no known instances of this vulnerability being exploited in the wild. However, it is crucial to stay vigilant and apply the necessary updates to protect against potential attacks.
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