CVE-2023-53410: USB: ULPI: fix memory leak with using debugfs_lookup()

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-09-18 · updated 2026-06-17
Weakness: CWE-401

Description

In the Linux kernel, the following vulnerability has been resolved: USB: ULPI: 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.

Affected products

Linux kernel: before 6.1.18; from 6.2 before 6.2.5 — fixed in 6.1.18, 6.2.5

How to fix

Upgrade to a fixed version: Linux kernel 6.1.18, 6.2.5. Check the vendor advisory for mitigations.

References

https://git.kernel.org/stable/c/2b8aa879e28df11e45855b04788050c61fb6b02a
https://git.kernel.org/stable/c/8f4d25eba599c4bd4b5ea8ae8752cda480a9d563
https://git.kernel.org/stable/c/dcbe69f4f743a938344b32e60531ea55355e0c08

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