Linux Kernel up to 6.3.3 recordmcount uwrite memory leak

CVSS Meta Temp Score
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CTI Interest Score
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5.5$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in Linux Kernel up to 6.3.3. This impacts the function uwrite of the component recordmcount. Performing a manipulation results in memory leak. This vulnerability is identified as CVE-2023-53318. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Linux Kernel up to 6.3.3. This affects the function uwrite of the component recordmcount. 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. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: recordmcount: Fix memory leaks in the uwrite function Common realloc mistake: 'file_append' nulled but not freed upon failure

It is possible to read the advisory at git.kernel.org. This vulnerability is uniquely identified as CVE-2023-53318 since 09/16/2025. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 265670 (Linux Distros Unpatched Vulnerability : CVE-2023-53318), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 4.14.316, 4.19.284, 5.4.244, 5.10.181, 5.15.113, 6.1.30 or 6.3.4 eliminates this vulnerability. Applying the patch bd39f68a309a947670379bf9a39b16c584f86ddb/444ec005404cead222ebce2561a9451c9ee5ad89/3ed95a6f6c646e8bb15c354536e0ab10e8f39c08/2d9ca5f62f2ba160ff9c9be4adf401c46c04edef/ff70ad9159fbb566b2c15724f44207e8deccd527/895130e63c93926f07caf5db286b97bd27b81de9/25c9b185f121812cbc215fdaa1192c6b9025b428/fa359d068574d29e7d2f0fdd0ebe4c6a12b5cfb9 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 (265670) and CERT Bund (WID-SEC-2025-2077). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Affected

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

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.6
VulDB Meta Temp Score: 5.5

VulDB Base Score: 5.7
VulDB Temp Score: 5.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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: 265670
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2023-53318

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 4.14.316/4.19.284/5.4.244/5.10.181/5.15.113/6.1.30/6.3.4
Patch: bd39f68a309a947670379bf9a39b16c584f86ddb/444ec005404cead222ebce2561a9451c9ee5ad89/3ed95a6f6c646e8bb15c354536e0ab10e8f39c08/2d9ca5f62f2ba160ff9c9be4adf401c46c04edef/ff70ad9159fbb566b2c15724f44207e8deccd527/895130e63c93926f07caf5db286b97bd27b81de9/25c9b185f121812cbc215fdaa1192c6b9025b428/fa359d068574d29e7d2f0fdd0ebe4c6a12b5cfb9

Timelineinfo

09/16/2025 Advisory disclosed
09/16/2025 +0 days CVE reserved
09/16/2025 +0 days VulDB entry created
12/27/2025 +102 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2023-53318 (🔒)
GCVE (CVE): GCVE-0-2023-53318
GCVE (VulDB): GCVE-100-324531
CERT Bund: WID-SEC-2025-2077 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 09/16/2025 20:40
Updated: 12/27/2025 08:27
Changes: 09/16/2025 20:40 (59), 09/21/2025 03:21 (2), 10/21/2025 05:55 (7), 12/02/2025 02:51 (10), 12/27/2025 08:27 (1)
Complete: 🔍
Cache ID: 216::103

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