CVE-2023-53403

time/debug: Fix memory leak with using debugfs_lookup()

State: Published
Severity: 5.5 Medium
Published: Sep 18, 2025
Updated: May 11, 2026
Reserved: Sep 17, 2025

Description

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

time/debug: 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.

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	44511ab344c755d1f216bf421e92fbc2777e87fe to before dc39fbd865a9819db4b622f610ba17b2ebc294f4Affected 44511ab344c755d1f216bf421e92fbc2777e87fe to before 15cffd01ed80e3506e29ba9f441e2358413b7317Affected 44511ab344c755d1f216bf421e92fbc2777e87fe to before b588b42d077ce93c98704b41003bcec6a564b738Affected 44511ab344c755d1f216bf421e92fbc2777e87fe to before 5b268d8abaec6cbd4bd70d062e769098d96670aaAffected
LinuxLinux	5.13Affected before 5.13Not affected 5.15.99 through 5.15.Not affected 6.1.16 through 6.1.Not affected 6.2.3 through 6.2.*Not affected 6.3 and laterNot affected

References

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