CVE-2023-53415
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-09-18

Last updated on: 2025-12-11

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: USB: dwc3: fix memory leak with using debugfs_lookup() When calling debugfs_lookup() the result must have dput() called on it, otherwise the memory will leak over time. To make things simpler, just call debugfs_lookup_and_remove() instead which handles all of the logic at once. Note, the root dentry for the debugfs directory for the device needs to be saved so we don't have to keep looking it up, which required a bit more refactoring to properly create and remove it when needed.
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Meta Information
Published
2025-09-18
Last Modified
2025-12-11
Generated
2026-06-16
AI Q&A
2025-09-18
EPSS Evaluated
2026-06-15
NVD
CVE-2023-53415
Affected Vendors & Products
Showing 3 associated CPEs
Vendor Product Version / Range
linux linux_kernel to 5.15.100 (exc)
linux linux_kernel From 5.16 (inc) to 6.1.18 (exc)
linux linux_kernel From 6.2 (inc) to 6.2.5 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-401 The product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse.
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Executive Summary

This vulnerability is a memory leak in the Linux kernel's USB dwc3 driver related to the use of debugfs_lookup(). When debugfs_lookup() is called, the returned result must be properly released with dput() to avoid leaking memory over time. The fix involves using debugfs_lookup_and_remove() which handles this logic automatically, preventing the memory leak.

Impact Analysis

The memory leak caused by improper handling of debugfs_lookup() can lead to increased memory usage over time, potentially degrading system performance or causing instability in systems using the affected Linux kernel USB driver.

Mitigation Strategies

To mitigate this vulnerability, update the Linux kernel to a version where the USB dwc3 driver uses debugfs_lookup_and_remove() instead of debugfs_lookup() without dput(), ensuring the memory leak is fixed. This involves applying the patch or upgrading to the fixed kernel version that includes this change.

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