CVE-2023-53415

USB: dwc3: fix memory leak with using debugfs_lookup()

State: Published
Severity: 5.5 Medium
Published: Sep 18, 2025
Updated: May 23, 2026
Reserved: Sep 17, 2025

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.

Scores

CVSS	Score	Vector	Source
3.1	5.5 Medium	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H	CISA-ADP

Weaknesses

CWE-401 Missing Release of Memory after Effective Lifetime

Affected Products

Product	Versions
LinuxLinux	8d396bb0a5b62b326f6be7594d8bd46b088296bd to before cf52c320cf74245ce1c12b0bd48f77b87d77fbc9Affected 8d396bb0a5b62b326f6be7594d8bd46b088296bd to before ce234af49d103d95e3fdca59b25e0d0242f41bb4Affected 8d396bb0a5b62b326f6be7594d8bd46b088296bd to before bab872b638130a18fd54d9adfad7db77ed6457beAffected 8d396bb0a5b62b326f6be7594d8bd46b088296bd to before be308d68785b205e483b3a0c61ba3a82da468f2cAffected 3bef21035888dd19750ad79b5d08fe52a02ad719Affected d7e403eea007f47776186d4d572f234b1221e6e3Affected e52d43c82f2f6556f0b7a790c19c072c1e99a95fAffected afd8b0d091d5b4febe2d0ac3b7735c1826329302Affected 4.19.196 to before 4.20Affected 5.4.128 to before 5.5Affected 5.10.46 to before 5.11Affected 5.12.13 to before 5.13Affected
LinuxLinux	5.13Affected before 5.13Not affected 5.15.100 through 5.15.Not affected 6.1.18 through 6.1.Not affected 6.2.5 through 6.2.*Not affected 6.3 and laterNot affected

Product

Versions

LinuxLinux

8d396bb0a5b62b326f6be7594d8bd46b088296bd to before cf52c320cf74245ce1c12b0bd48f77b87d77fbc9Affected
8d396bb0a5b62b326f6be7594d8bd46b088296bd to before ce234af49d103d95e3fdca59b25e0d0242f41bb4Affected
8d396bb0a5b62b326f6be7594d8bd46b088296bd to before bab872b638130a18fd54d9adfad7db77ed6457beAffected
8d396bb0a5b62b326f6be7594d8bd46b088296bd to before be308d68785b205e483b3a0c61ba3a82da468f2cAffected
3bef21035888dd19750ad79b5d08fe52a02ad719Affected
d7e403eea007f47776186d4d572f234b1221e6e3Affected
e52d43c82f2f6556f0b7a790c19c072c1e99a95fAffected
afd8b0d091d5b4febe2d0ac3b7735c1826329302Affected
4.19.196 to before 4.20Affected
5.4.128 to before 5.5Affected
5.10.46 to before 5.11Affected
5.12.13 to before 5.13Affected

LinuxLinux

5.13Affected
before 5.13Not affected
5.15.100 through 5.15.*Not affected
6.1.18 through 6.1.*Not affected
6.2.5 through 6.2.*Not affected
6.3 and laterNot affected

References

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