CIFS Memory Management Warning in Linux Kernel: Vulnerability in Linux Package
Summary
DEBIAN-CVE-2024-50119: In the Linux kernel, the following vulnerability has been resolved: cifs: fix warning when destroy 'cifs_io_request_pool' There's a issue as follows: WARNING: CPU: 1 PID: 27826 at mm/slub.c:4698 free_large_kmalloc+0xac/0... Affects linux versions < 6.11.6-1. Fixed in 6.11.6-1. How to fix ↓
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Background
The Linux package is a core component of the Debian operating system, providing the essential kernel that manages system resources and hardware interactions. It supports a wide range of functionalities, including process management, memory management, and device control. This vulnerability specifically affects the CIFS (Common Internet File System) implementation within the Linux kernel, which is responsible for network file sharing. The issue arises from improper memory management, leading to potential system warnings and instability.
Vulnerability Detail
In the Linux kernel, a vulnerability has been identified in the CIFS module where a warning is triggered during the destruction of the 'cifs_io_request_pool'. This occurs because the memory pool is not properly created, resulting in a warning during the free operation. The warning is logged as follows: WARNING: CPU: 1 PID: 27826 at mm/slub.c:4698 free_large_kmalloc+0xac/0xe0. This could lead to system instability and may affect the performance of file sharing operations over the network.
How To Fix
Minimum fixed version
6.11.6-1
This is the first release that contains the fix.
sudo apt-get install --only-upgrade linuxTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
Currently, there are no specific workarounds mentioned for this vulnerability. However, ensuring that the system is updated to the latest version will mitigate the risk associated with this issue.
Conclusion
The identified vulnerability in the CIFS module of the Linux kernel poses a risk of system warnings and potential instability. It is crucial to update to the patched version 6.11.6-1 to mitigate these risks. Regular monitoring and updates are essential for maintaining system security.
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FAQ
The vulnerability is related to improper memory management in the CIFS module of the Linux kernel, leading to warnings during the destruction of a memory pool.
It may cause system warnings and could potentially lead to instability in file sharing operations over the network.
Yes, the vulnerability has been patched in version 6.11.6-1 of the Linux package.
You can use tools like Vulert to monitor and alert for open-source vulnerabilities in your software. Visit Vulert Scanner to check if your application is affected.
While there are no specific workarounds, it is advisable to monitor your system for any unusual behavior and plan to update as soon as possible.
References
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