PT-2025-38375 · Linux+2 · Linux Kernel+2

Published 2025-09-18 · Updated 2025-10-23 · CVE-2023-53396

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description A memory leak exists in the do rename function when renaming a file within an encrypted directory. The fscrypt setup filename function allocates memory for a filename that is never used, and this memory is not freed before returning to the caller, resulting in a memory leak. This issue was identified using kmemleak and triggered by a simple rename program. The fscrypt setup filename function is called within ubifs rename, vfs rename, and do renameat2.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Memory Leak

Weakness Enumeration

CWE-401

Related Identifiers

CVE-2023-53396

SUSE-SU-2025:03615-1

SUSE-SU-2025:03628-1

SUSE-SU-2025:3716-1

SUSE-SU-2025:3761-1

Affected Products

Astra Linux

Linux Kernel

Suse

References · 862

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53396.json · Exploit
• https://git.kernel.org/stable/c/9f565752b328fe53c9e42b7d4e4d89a1da63d738 · Patch
• https://osv.dev/vulnerability/BELL-CVE-2023-53396 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-53396 · Security Note
• https://git.kernel.org/stable/c/7e264f67b7d6580eff5c2696961039fd05c69258 · Patch
• https://osv.dev/vulnerability/SUSE-SU-2025:3761-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2023-53396 · Vendor Advisory
• https://ubuntu.com/security/CVE-2023-53396 · Vendor Advisory
• https://git.kernel.org/stable/c/517ddc0259d7a7231486bdafde8035c478bc4088 · Patch
• https://osv.dev/vulnerability/SUSE-SU-2025:03628-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:3716-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2023-53396 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:03615-1 · Vendor Advisory
• https://git.kernel.org/stable/c/3a36d20e012903f45714df2731261fdefac900cb · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2023-53396 · Vendor Advisory