VDB-327517 · CVE-2023-53687 · Nessus 276910

Linux Kernel up to 6.4.4 tty s3c24xx_serial_getclk memory leak

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5.5	$0-$5k	0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Linux Kernel up to 6.4.4. This vulnerability affects the function s3c24xx_serial_getclk of the component tty. This manipulation causes memory leak. This vulnerability is tracked as CVE-2023-53687. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.4.4. It has been declared as critical. Affected by this vulnerability is the function s3c24xx_serial_getclk of the component tty. The manipulation with an unknown input leads to a memory leak vulnerability. The CWE definition for the vulnerability is CWE-401. The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory. As an impact it is known to affect availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: tty: serial: samsung_tty: Fix a memory leak in s3c24xx_serial_getclk() when iterating clk When the best clk is searched, we iterate over all possible clk. If we find a better match, the previous one, if any, needs to be freed. If a better match has already been found, we still need to free the new one, otherwise it leaks.

The advisory is shared at git.kernel.org. This vulnerability is known as CVE-2023-53687 since 10/07/2025. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 276910 (SUSE SLES12 Security Update : kernel (SUSE-SU-2025:4189-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 4.14.322, 4.19.291, 5.4.251, 5.10.188, 5.15.121, 6.1.40 or 6.4.5 eliminates this vulnerability. Applying the patch 933e5b2998bc3a527d15efbf1e97c9e63297aa3c/01dd8a43a84616c830782166ba3cceb01ad95363/46574e5a0a2aee41e6ebb979cfe1dbaea8693e16/1962717c4649e026a4252fe6625175affd28a593/9dd8091959bc41fee51d0827276a2b982e84adf0/f0bf102ef9b05d7294bd8d506755465f6867d944/1f426293fef1c13742b2a685bf7e363f51f6ee03/832e231cff476102e8204a9e7bddfe5c6154a375 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 (276910) and CERT Bund (WID-SEC-2025-2229). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Affected

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

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: 5.6
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

AV	AC	Au	C	I	A
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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: 276910
Nessus Name: SUSE SLES12 Security Update : kernel (SUSE-SU-2025:4189-1)

Threat Intelligenceinfo

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

Countermeasuresinfo

Timelineinfo

10/07/2025 Advisory disclosed
10/07/2025 +0 days CVE reserved
10/07/2025 +0 days VulDB entry created
03/01/2026 +145 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2023-53687 (🔒)
GCVE (CVE): GCVE-0-2023-53687
GCVE (VulDB): GCVE-100-327517
CERT Bund: WID-SEC-2025-2229 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 10/07/2025 19:32
Updated: 03/01/2026 13:41
Changes: 10/07/2025 19:32 (59), 11/23/2025 06:32 (7), 11/27/2025 23:16 (2), 12/26/2025 02:34 (1), 02/03/2026 19:35 (10), 03/01/2026 13:41 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.