Linux Kernel up to 5.10.45/5.12.12 phy-mtk-tphy mtk_phy_init 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 classified as critical was found in Linux Kernel up to 5.10.45/5.12.12. Affected by this issue is the function mtk_phy_init of the component phy-mtk-tphy. Such manipulation leads to memory leak. This vulnerability is documented as CVE-2021-47234. There is not any exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Linux Kernel up to 5.10.45/5.12.12. It has been rated as critical. Affected by this issue is the function mtk_phy_init of the component phy-mtk-tphy. The manipulation with an unknown input leads to a memory leak vulnerability. Using CWE to declare the problem leads to CWE-401. The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory. Impacted is availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: phy: phy-mtk-tphy: Fix some resource leaks in mtk_phy_init() Use clk_disable_unprepare() in the error path of mtk_phy_init() to fix some resource leaks.

The advisory is available at git.kernel.org. This vulnerability is handled as CVE-2021-47234 since 04/10/2024. Technical details are known, but there is no available exploit.

Upgrading to version 5.10.46 or 5.12.13 eliminates this vulnerability. Applying the patch 9a1790794623/6472955af5e8/aaac9a1bd370 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 vulnerability database at CERT Bund (WID-SEC-2024-1197). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Affected

  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • IBM InfoSphere Guardium
  • Oracle Linux
  • EMC Avamar
  • Dell NetWorker
  • IBM Security Guardium
  • RESF Rocky Linux
  • Broadcom Brocade SANnav
  • Open Source Linux Kernel
  • IBM Business Automation Workflow
  • IBM Spectrum Protect Plus
  • IBM QRadar SIEM
  • Dell Avamar
  • Juniper Junos Space
  • IBM DB2
  • IBM Storage Scale System
  • SolarWinds Security Event Manager
  • Dell PowerProtect Data Domain
  • Dell PowerProtect Data Domain Management Center
  • Dell PowerProtect Data Domain OS

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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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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 5.10.46/5.12.13
Patch: 9a1790794623/6472955af5e8/aaac9a1bd370

Timelineinfo

04/10/2024 🔍
05/21/2024 +41 days 🔍
05/21/2024 +0 days 🔍
08/06/2025 +442 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2021-47234 (🔍)
GCVE (CVE): GCVE-0-2021-47234
GCVE (VulDB): GCVE-100-265706
CERT Bund: WID-SEC-2024-1197 - Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of Service und unspezifische Angriffe

Entryinfo

Created: 05/21/2024 20:24
Updated: 08/06/2025 04:10
Changes: 05/21/2024 20:24 (58), 04/30/2025 09:34 (12), 08/06/2025 04:10 (7)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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