Memory Leak Fix in Linux Kernel: NVMe-TCP Controller Creation Failure
Summary
DEBIAN-CVE-2024-56632: In the Linux kernel, the following vulnerability has been resolved: nvme-tcp: fix the memleak while create new ctrl failed Now while we create new ctrl failed, we have not free the tagset occupied by admin_q, here try to... Affects linux versions < 6.12.5-1. Fixed in 6.12.5-1. How to fix ↓
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Background
The Linux kernel is a core component of the operating system that manages hardware resources and provides essential services for software applications. It is known for its robustness, flexibility, and support for a wide range of hardware. However, like any complex software, it can have vulnerabilities. This specific issue pertains to the NVMe-TCP subsystem, which facilitates communication between the host and NVMe storage devices over TCP/IP networks. The vulnerability arises when a new controller is created but fails, leading to a memory leak.
Vulnerability Detail
In the Linux kernel, a vulnerability has been identified in the NVMe-TCP subsystem where a memory leak occurs during the creation of a new controller. When the controller creation fails, the memory allocated for the tagset associated with the admin queue is not freed, potentially leading to increased memory consumption and system instability. This issue could be exploited to exhaust system memory resources, affecting the performance and reliability of the system.
How To Fix
Minimum fixed version
6.12.5-1
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 provided for this vulnerability. The best course of action is to apply the patch by updating the package as described in the 'how_to_fix' section.
Conclusion
The identified vulnerability in the Linux kernel's NVMe-TCP subsystem poses a risk of memory leaks during controller creation failures. Users are urged to update their systems to the patched version to ensure stability and performance. Regular monitoring and timely updates are essential for maintaining system security.
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FAQ
The vulnerability is a memory leak that occurs in the NVMe-TCP subsystem of the Linux kernel when a new controller creation fails.
If exploited, this vulnerability can lead to increased memory usage, potentially exhausting system resources and causing performance degradation.
You can use Vulert, which monitors and alerts for open-source vulnerabilities in your software. Visit Vulert Scanner to check if your application is affected without any signup.
Yes, a patch is available in version 6.12.5-1 of the Linux package. It is recommended to update to this version to fix the vulnerability.
While there are no specific workarounds, it is crucial to monitor your system's memory usage and plan for an update as soon as possible to mitigate the risks associated with this vulnerability.
References
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