Memory Leak Vulnerability in MIPS Kernel
Summary
GSD-2022-1002082: MIPS: pgalloc: fix memory leak caused by pgd_free(). Affects Kernel versions >= f9cb654cb550b7b87e8608b14fc3eca432429ffe, < fa3d44424579972cc7c4fac3d9cf227798ebdfa0. No fix is published. How to fix ↓
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Background
The MIPS kernel is a component of the Linux operating system that supports the MIPS architecture. It provides essential functionality for managing memory, processes, and system resources. The kernel is responsible for handling low-level operations and ensuring the stability and security of the system. However, a vulnerability has been discovered in the kernel's memory allocation mechanism, specifically in the pgalloc module.
Vulnerability Detail
The vulnerability in the MIPS kernel's pgalloc module leads to a memory leak when the pgd_free() function is called. This can result in the gradual depletion of available memory resources, potentially leading to system instability or denial of service. The issue was introduced in version v5.9 of the Linux Kernel and has been fixed in version v5.10.110. The vulnerability can be exploited by an attacker with local access to the system.
How To Fix
No fixed version is published for this vulnerability.
To fix this vulnerability, it is recommended to update the Linux Kernel to version v5.10.110 or later. This can be done by downloading the updated kernel source code from the official Linux Kernel repository (https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/) and compiling it for the target system. Alternatively, users can wait for their Linux distribution to provide an updated package containing the fixed kernel version.
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Workaround
There is no known workaround for this vulnerability. It is essential to update the Linux Kernel to the fixed version as soon as possible.
Conclusion
The memory leak vulnerability in the MIPS Kernel's pgalloc module can have serious consequences for system stability and availability. It is crucial to update the Linux Kernel to the fixed version to mitigate the risk. For further support and assistance with vulnerability remediation, please contact DevNack.com.
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FAQ
The vulnerability can lead to a gradual depletion of available memory resources in the system, potentially causing system instability or denial of service.
An attacker with local access to the system can exploit this vulnerability.
You can use the 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 analyze and alert you if the vulnerability is present.
There are no known instances of this vulnerability being exploited in the wild at this time.
You can find more information about this vulnerability in the Open Source Vulnerability Database (OSVDB) entry: https://github.com/cloudsecurityalliance/gsd-database/blob/main/2022/1002xxx/GSD-2022-1002082.json
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