Memory Leak Vulnerability in Linux Kernel's USB Gadget - CVE-2023-53406
Summary
CVE-2023-53406: In the Linux kernel, the following vulnerability has been resolved: USB: gadget: pxa25x_udc: fix memory leak with using debugfs_lookup() When calling debugfs_lookup() the result must have dput() called on it, otherwise t... 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 flexibility, supporting a wide range of devices and architectures. The kernel's USB gadget subsystem allows devices to act as USB peripherals, enabling various functionalities. However, a recent vulnerability has been identified that could lead to memory leaks, affecting system performance over time.
Vulnerability Detail
CVE-2023-53406 is a vulnerability in the Linux kernel's USB gadget subsystem, specifically in the pxa25x_udc driver. The issue arises when the function debugfs_lookup() is called without a corresponding dput() call, leading to a memory leak. This leak can accumulate over time, potentially exhausting system memory and degrading performance. The vulnerability affects multiple Debian versions, including Debian 11, 12, 13, and 14, and is critical for systems relying on USB gadget functionality.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
Currently, there are no specific workarounds mentioned for this vulnerability. The best course of action is to apply the patch as soon as it is available.
Conclusion
CVE-2023-53406 is a significant vulnerability in the Linux kernel's USB gadget subsystem that can lead to memory leaks. It is crucial for users of affected Debian versions to update their systems to the patched version to mitigate potential risks. Regular monitoring and timely updates are essential for maintaining system integrity.
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FAQ
CVE-2023-53406 is a vulnerability in the Linux kernel that can lead to memory leaks in the USB gadget subsystem.
If exploited, this vulnerability can cause memory leaks that may degrade system performance over time.
Debian versions 11, 12, 13, and 14 are affected by this vulnerability.
You can use Vulert's playground at Vulert Scanner to check if your application is affected by this vulnerability without needing to sign up.
While there are no specific workarounds, it is advisable to monitor your system's memory usage and apply the patch as soon as possible.
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