PT-2025-40175 · Linux+3 · Linux Kernel+3

Published 2023-02-02 · Updated 2025-10-23 · CVE-2023-53468

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 The Linux kernel contained a memory leak in the alloc wbufs() function within the UBIFS (Unsorted Block Image File System) component. The ubifs wbuf init() function could return an error during a loop, and in such cases, memory allocated for wbuf->buf and wbuf->inodes was not freed. This resulted in a memory leak. The issue was identified by kmemleak, which reported unreferenced objects in memory associated with the mount process. The backtrace indicates involvement of functions like kmalloc, ubifs mount, legacy get tree, vfs get tree, path mount, x64 sys mount, do syscall 64, and entry SYSCALL 64 after hwframe.

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

BDU:2026-03836

CVE-2023-53468

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

Ubifs

References · 868

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53468.json · Exploit
• https://git.kernel.org/stable/c/e11f36d3bc4d23f620754a948fe7b82b63dcb185 · Patch
• https://osv.dev/vulnerability/CVE-2023-53468 · Vendor Advisory
• https://git.kernel.org/stable/c/4a1ff3c5d04b9079b4f768d9a71b51c4af578dd2 · Patch
• https://git.kernel.org/stable/c/bf50229494f0443b3f08427d7df63e5a7e2a796a · Patch
• https://osv.dev/vulnerability/SUSE-SU-2025:03628-1 · Vendor Advisory
• https://git.kernel.org/stable/c/1f206002c6bc302bface871ef3f72c0bbcaa931c · Patch
• https://cve.org/CVERecord?id=CVE-2023-53468 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2023-53468 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:3716-1 · Vendor Advisory
• https://git.kernel.org/stable/c/3e29634eb56e6547272fe4e568f63421f8b3b9fa · Patch
• https://osv.dev/vulnerability/SUSE-SU-2025:03615-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2023-53468 · Vendor Advisory
• https://git.kernel.org/stable/c/26ec45f1c504e15268383019df139d7983f1e67f · Patch
• https://osv.dev/vulnerability/SUSE-SU-2025:3761-1 · Vendor Advisory