CVE-2023-53355

staging: pi433: fix memory leak with using debugfs_lookup()

State: Published
Severity: 5.5 Medium
Published: Sep 17, 2025
Updated: May 11, 2026
Reserved: Sep 16, 2025

Description

In the Linux kernel, the following vulnerability has been resolved:

staging: pi433: 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. This requires saving off the root directory dentry to make creation of individual device subdirectories easier.

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	874bcba65f9a3a2a304b5f520529c046887c3cdc to before 04f3cda40e9f6653ae15ed3fcf26ef2860f4df66Affected 874bcba65f9a3a2a304b5f520529c046887c3cdc to before bb16f3102607b69e1a0233f4b73c6e337f86ef8dAffected 874bcba65f9a3a2a304b5f520529c046887c3cdc to before 2f36e789e540df6a9fbf471b3a2ba62a8b361586Affected
LinuxLinux	4.14Affected before 4.14Not 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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