CVE-2023-53402Missing Release of Memory after Effective Lifetime in Linux

Severity
5.5MEDIUMNVD
EPSS
0.0%
top 95.91%
CISA KEV
Not in KEV
Exploit
No known exploits
Timeline
PublishedSep 18

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.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6

Affected Packages4 packages

NVDlinux/linux_kernel5.166.1.18+2
Debianlinux/linux_kernel< 6.1.20-1+2
CVEListV5linux/linux337015573718b161891a3473d25f59273f2e626b2e07fa2e30d48d24a791483774a3d4b76769e0cf+4
debiandebian/linux< linux 6.1.20-1 (bookworm)

Patches

🔴Vulnerability Details

2
GHSA
GHSA-cm93-2632-9m2q: In the Linux kernel, the following vulnerability has been resolved: kernel/printk/index2025-09-18
OSV
CVE-2023-53402: In the Linux kernel, the following vulnerability has been resolved: kernel/printk/index2025-09-18

📋Vendor Advisories

2
Red Hat
kernel: kernel/printk/index.c: fix memory leak with using debugfs_lookup()2025-09-18
Debian
CVE-2023-53402: linux - In the Linux kernel, the following vulnerability has been resolved: kernel/prin...2023
CVE-2023-53402 — Linux vulnerability | cvebase