Memory Leak Vulnerability in Linux Kernel: USB isp116x Package
Summary
CVE-2023-53413: In the Linux kernel, the following vulnerability has been resolved: USB: isp116x: fix memory leak with using debugfs_lookup() When calling debugfs_lookup() the result must have dput() called on it, otherwise the memory w... Affects linux versions 5.10.103-1 – 6.9.9-1. No fix is published. How to fix ↓
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Background
The Linux kernel is the core component of many operating systems, providing essential services for hardware and software interaction. It is known for its stability, performance, and extensive hardware support. The kernel's USB subsystem, particularly the isp116x driver, is responsible for managing USB devices. However, a recent vulnerability has been identified that could lead to memory leaks, impacting system performance over time.
Vulnerability Detail
In the Linux kernel, a vulnerability has been discovered within the USB isp116x driver related to the improper handling of memory when using the debugfs_lookup() function. This function is intended to retrieve a directory entry from the debug filesystem, but if the result is not properly released using dput(), it can lead to a memory leak. Over time, this leak can accumulate, potentially degrading system performance and stability. The issue arises from the failure to manage memory correctly, which is critical in kernel-level programming where resources are limited.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As a temporary workaround, users can avoid using the debugfs_lookup() function directly and instead utilize the debugfs_lookup_and_remove() function, which handles memory management more effectively and prevents leaks.
Conclusion
The CVE-2023-53413 vulnerability in the Linux kernel's USB isp116x driver poses a risk of memory leaks that can affect system performance. It is crucial to apply the available patches and consider workarounds to mitigate the risk until updates can be made.
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FAQ
CVE-2023-53413 is a vulnerability in the Linux kernel's USB isp116x driver that can lead to memory leaks due to improper memory management.
If exploited, this vulnerability can cause memory leaks that degrade system performance over time, potentially leading to crashes or instability.
Yes, a patch is available in version 6.1.20-1 and later of the Linux package. It is recommended to update to this version to fix the vulnerability.
As a temporary measure, you can avoid using the debugfs_lookup() function and instead use debugfs_lookup_and_remove() to prevent memory leaks.
You can use Vulert, which monitors and alerts in real-time for open-source vulnerabilities using just a manifest file like package-lock.json. You can check if your application is affected by this vulnerability using the Vulert playground without any signup.
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