Memory Leak Vulnerability in Linux Kernel: USB fotg210 Package
Summary
CVE-2023-53404: In the Linux kernel, the following vulnerability has been resolved: USB: fotg210: 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 the Linux operating system, responsible for managing hardware resources and providing essential services to applications. The kernel supports a wide range of hardware and software configurations, making it a critical component in various environments, from servers to embedded systems. The vulnerability in question affects the USB fotg210 driver, which is responsible for managing USB devices connected to the system. This vulnerability can lead to memory leaks, impacting system performance and stability.
Vulnerability Detail
In the Linux kernel, a vulnerability has been identified in the USB fotg210 driver related to the improper handling of memory allocation when using the debugfs_lookup() function. The issue arises because the result of this function must have dput() called on it to prevent memory leaks. If this function is not called, memory will accumulate over time, potentially leading to degraded system performance or crashes. The vulnerability has been assigned the identifier CVE-2023-53404 and affects multiple Debian versions of the Linux package.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As a workaround, users can avoid using the debugfs_lookup() function directly and instead utilize the debugfs_lookup_and_remove() function, which handles the memory management correctly and prevents leaks.
Conclusion
The vulnerability CVE-2023-53404 in the Linux kernel's USB fotg210 driver poses a risk of memory leaks, which can affect system performance. Users are advised to update to the patched version 6.1.20-1 to mitigate this risk. Workarounds are available for those unable to update immediately.
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FAQ
CVE-2023-53404 is a vulnerability in the Linux kernel's USB fotg210 driver that can lead to memory leaks if not properly managed.
If exploited, this vulnerability can cause memory leaks, leading to performance degradation and potential system crashes over time.
Yes, the patched version of the Linux package is 6.1.20-1 for Debian users. It is recommended to update to this version.
As a temporary measure, you can use the debugfs_lookup_and_remove() function instead of debugfs_lookup() to manage memory correctly.
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 also check your application for this vulnerability using the Vulert playground without any signup.
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