MediumFix available
USB: dwc3: fix memory leak with using debugfs_lookup()
Type: advisorySources: OSV
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.
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 5.15.100, 6.1.18, 6.2.5
- CVEs
- CVE-2023-53415
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 2 Nov 2026, 23:22 UTC · Revision 1
Source evidence
USB: dwc3: fix memory leak with using debugfs_lookup()
core-osv · Original sourcePublished 18 Sept 2025, 13:58 UTC
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.
osv:CVE-2023-53415
Kernel
Fixed versions: 5.15.100, 6.1.18, 6.2.5
Complete source record
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"title": "USB: dwc3: fix memory leak with using debugfs_lookup()",
"summary": "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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],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 490854,
"published_at": "2025-09-18T13:58:51.771+00:00"
}