CVE-2023-53403

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

MEDIUM
5.5
CVSS Score
Published: September 18, 2025 at 01:58 PM UTC
Updated: June 17, 2026 at 06:45 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.1%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 5.15.995.13 ≤ v < 5.15.995.13 ≤ v < 6.1.165.13 ≤ v < 6.2.35.13 ≤ v < 6.35.16 ≤ v < 6.1.166.2 ≤ v < 6.2.344511ab344c755d1f216bf421e92fbc2777e87fe5.13
Vendor states this is fixed in 15cffd01ed80e3506e29ba9f441e2358413b7317 (fixed)
Vendor states this is fixed in 5b268d8abaec6cbd4bd70d062e769098d96670aa (fixed)
Vendor states this is fixed in b588b42d077ce93c98704b41003bcec6a564b738 (fixed)
Vendor states this is fixed in dc39fbd865a9819db4b622f610ba17b2ebc294f4 (fixed)
Vendor states this is fixed in 5.13 (unaffected)
Vendor states this is fixed in 5.15.99 (unaffected)
Vendor states this is fixed in 6.1.16 (unaffected)
Vendor states this is fixed in 6.2.3 (unaffected)
Vendor states this is fixed in 6.3 (unaffected)

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.5MEDIUMCISA-ADP
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-401

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