PT-2025-37876 · Linux+2 · Linux Kernel+2

Published 2023-02-02 · Updated 2025-11-24 · CVE-2023-53271

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 was identified in the UBI (Unsorted Block Images) module within the Linux kernel, specifically within the ubi resize volume() function. The issue stems from a mismatch between the creation and destruction interfaces, where a table (new eba tbl) is created using ubi eba create table() but destroyed using kfree(), leading to unfreed memory associated with new eba tbl->entries. This was reported by kmemleak as an unreferenced object.

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

Exploit

Memory Leak

Improper Resource Release

Weakness Enumeration

CWE-401

CWE-404

Related Identifiers

BDU:2026-03952

CVE-2023-53271

OESA-2025-2553

SUSE-SU-2025:4189-1

Affected Products

Astra Linux

Linux Kernel

Suse

References · 345

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53271.json · Exploit
• https://git.kernel.org/stable/c/07b60f7452d2fa731737552937cb81821919f874 · Patch
• https://git.kernel.org/stable/c/27b760b81951d8d5e5c952a696af8574052b0709 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2023-53453 · Security Note
• https://osv.dev/vulnerability/CVE-2023-53271 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-50505 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2022-50405 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2023-53681 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2025:4189-1 · Vendor Advisory
• https://git.kernel.org/stable/c/31d60afe2cc2b712dbefcaab6b7d6a47036f844e · Patch
• https://security-tracker.debian.org/tracker/CVE-2023-53271 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-53384 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2023-53271 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2023-53271 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-38352 · Security Note