Linux Kernel up to 6.4.4 tty s3c24xx_serial_getclk memory leak

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CTI Interest Score
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5.5$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 6.4.4. It has been declared as critical. This affects the function s3c24xx_serial_getclk of the component tty. The manipulation results in memory leak. This vulnerability is known as CVE-2023-53858. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.4.4. It has been classified as critical. Affected is the function s3c24xx_serial_getclk of the component tty. 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: tty: serial: samsung_tty: Fix a memory leak in s3c24xx_serial_getclk() in case of error If clk_get_rate() fails, the clk that has just been allocated needs to be freed.

The advisory is shared for download at git.kernel.org. This vulnerability is traded as CVE-2023-53858 since 12/09/2025. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 278012 (Linux Distros Unpatched Vulnerability : CVE-2023-53858), 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 755289d67eb9a74ae71bb624902e979c66859444/f47e6631a8fcc6fe05b8644aa4222a60f3b0a927/30962268fa1a7466413b3d83037688129021d470/a49e5a05121c8bc471a57b4916c5393749c24de5/073dbbe5743779faf24f233cc95459b47c7198dd/34f5b826dd509b76644f83094b4af7e7668a6a38/1694fc8ad734e2909a9e40d2be03cc4423e0bee6/a9c09546e903f1068acfa38e1ee18bded7114b37 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 (278012) and CERT Bund (WID-SEC-2025-2765). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Affected

  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • SUSE openSUSE
  • Open Source Linux Kernel
  • RESF Rocky Linux

Productinfo

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Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.7
VulDB Meta Temp Score: 5.5

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

CVSSv2info

AVACAuCIA
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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: No
Local: No
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 278012
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2023-53858

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 4.14.322/4.19.291/5.4.251/5.10.188/5.15.121/6.1.40/6.4.5
Patch: 755289d67eb9a74ae71bb624902e979c66859444/f47e6631a8fcc6fe05b8644aa4222a60f3b0a927/30962268fa1a7466413b3d83037688129021d470/a49e5a05121c8bc471a57b4916c5393749c24de5/073dbbe5743779faf24f233cc95459b47c7198dd/34f5b826dd509b76644f83094b4af7e7668a6a38/1694fc8ad734e2909a9e40d2be03cc4423e0bee6/a9c09546e903f1068acfa38e1ee18bded7114b37

Timelineinfo

12/09/2025 Advisory disclosed
12/09/2025 +0 days CVE reserved
12/09/2025 +0 days VulDB entry created
03/30/2026 +111 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2023-53858 (🔒)
GCVE (CVE): GCVE-0-2023-53858
GCVE (VulDB): GCVE-100-335040
CERT Bund: WID-SEC-2025-2765 - Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of Service

Entryinfo

Created: 12/09/2025 11:14
Updated: 03/30/2026 02:59
Changes: 12/09/2025 11:14 (59), 12/10/2025 15:47 (2), 03/30/2026 02:59 (7)
Complete: 🔍
Cache ID: 216::103

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