VDB-324708 · CVE-2023-53367 · Nessus 265627

Linux Kernel up to 6.4.11 user_mappings memory leak

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5.0	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 6.4.11. It has been declared as critical. Affected is the function user_mappings. The manipulation results in memory leak. This vulnerability was named CVE-2023-53367. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.4.11. It has been classified as critical. Affected is the function user_mappings. The manipulation with an unknown input leads to a memory leak vulnerability. CWE is classifying the issue as CWE-401. The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory. This is going to have an impact on availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: accel/habanalabs: fix mem leak in capture user mappings This commit fixes a memory leak caused when clearing the user_mappings info when a new context is opened immediately after user_mapping is captured and a hard reset is performed.

The advisory is shared for download at git.kernel.org. This vulnerability is traded as CVE-2023-53367 since 09/17/2025. The exploitability is told to be difficult. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 265627 (Linux Distros Unpatched Vulnerability : CVE-2023-53367), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.4.12 eliminates this vulnerability. Applying the patch 973e0890e5264cb075ef668661cad06b67777121/314a7ffd7c196b27eedd50cb7553029e17789b55 is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (265627) and CERT Bund (WID-SEC-2025-2087). Once again VulDB remains the best source for vulnerability data.

Affected

Amazon Linux 2
Red Hat Enterprise Linux
SUSE Linux
Oracle Linux
IBM QRadar SIEM
Open Source Linux Kernel
RESF Rocky Linux
Dell Secure Connect Gateway

Productinfo

Type

Operating System

Vendor

Linux

Name

Kernel

Version

License

open-source

Website

Vendor: https://www.kernel.org/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.1
VulDB Meta Temp Score: 5.0

VulDB Base Score: 4.8
VulDB Temp Score: 4.6
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔒

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Memory leak
CWE: CWE-401 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 265627
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2023-53367

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.4.12
Patch: 973e0890e5264cb075ef668661cad06b67777121/314a7ffd7c196b27eedd50cb7553029e17789b55

Timelineinfo

09/17/2025 Advisory disclosed
09/17/2025 +0 days CVE reserved
09/17/2025 +0 days VulDB entry created
12/27/2025 +101 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2023-53367 (🔒)
GCVE (CVE): GCVE-0-2023-53367
GCVE (VulDB): GCVE-100-324708
CERT Bund: WID-SEC-2025-2087 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 09/17/2025 17:44
Updated: 12/27/2025 07:41
Changes: 09/17/2025 17:44 (58), 09/21/2025 20:56 (2), 12/11/2025 19:39 (11), 12/27/2025 07:41 (7)
Complete: 🔍
Cache ID: 216::103