CVE-2023-53402

MEDIUM

Linux kernel < 5.15 - Use-After-Free in debugfs_lookup

Title source: llm
STIX 2.1

Description

In the Linux kernel, the following vulnerability has been resolved: kernel/printk/index.c: 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 v3 5.5
EPSS 0.0014
EPSS Percentile 3.3%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-401
Status published
Products (11)
Linux/Linux < 5.15
Linux/Linux 337015573718b161891a3473d25f59273f2e626b - 13969236b6900b5a3625ad2193569588e978f1cc
Linux/Linux 337015573718b161891a3473d25f59273f2e626b - 2e07fa2e30d48d24a791483774a3d4b76769e0cf
Linux/Linux 337015573718b161891a3473d25f59273f2e626b - 55bf243c514553e907efcf2bda92ba090eca8c64
Linux/Linux 337015573718b161891a3473d25f59273f2e626b - c578a68ffcdc2e8c72556bebdaae2b7500398e81
Linux/Linux 5.15
Linux/Linux 5.15.100 - 5.15.*
Linux/Linux 6.1.18 - 6.1.*
Linux/Linux 6.2.5 - 6.2.*
Linux/Linux 6.3
... and 1 more
Published Sep 18, 2025
Tracked Since Feb 18, 2026