Linux Kernel up to 6.2.4 mfd pm_runtime_resume_and_get reference count

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5.5	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 5.4.234/5.10.172/5.15.99/6.1.17/6.2.4 and classified as critical. This issue affects the function pm_runtime_resume_and_get of the component mfd. Such manipulation leads to reference count. This vulnerability is traded as CVE-2023-53443. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 5.4.234/5.10.172/5.15.99/6.1.17/6.2.4. It has been rated as critical. Affected by this issue is the function pm_runtime_resume_and_get of the component mfd. The manipulation with an unknown input leads to a reference count vulnerability. Using CWE to declare the problem leads to CWE-911. The product uses a reference count to manage a resource, but it does not update or incorrectly updates the reference count. Impacted is availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: mfd: arizona: Use pm_runtime_resume_and_get() to prevent refcnt leak In arizona_clk32k_enable(), we should use pm_runtime_resume_and_get() as pm_runtime_get_sync() will increase the refcnt even when it returns an error.

The advisory is shared for download at git.kernel.org. This vulnerability is handled as CVE-2023-53443 since 09/17/2025. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 265525 (Linux Distros Unpatched Vulnerability : CVE-2023-53443), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.4.235, 5.10.173, 5.15.100, 6.1.18 or 6.2.5 eliminates this vulnerability. Applying the patch 7195e642b49af60d4120fa1b45bd812ba528174f/754e81ff44061dda68da0fd4ef51bd1aa9fbf2cf/5a47bb71b1a94a279144fc3031d3c4591b38dd16/9893771097b22a8743a446e45994a177795ca4da/dc9437e9889c3dacf1f320e3cf08da74127573fe/4414a7ab80cebf715045e3c4d465feefbad21139 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 (265525) and CERT Bund (WID-SEC-2025-2092). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Affected

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

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 5.4.234
• 5.10.172
• 5.15.0
• 5.15.1
• 5.15.2
• 5.15.3
• 5.15.4
• 5.15.5
• 5.15.6
• 5.15.7
• 5.15.8
• 5.15.9
• 5.15.10
• 5.15.11
• 5.15.12
• 5.15.13
• 5.15.14
• 5.15.15
• 5.15.16
• 5.15.17
• 5.15.18
• 5.15.19
• 5.15.20
• 5.15.21
• 5.15.22
• 5.15.23
• 5.15.24
• 5.15.25
• 5.15.26
• 5.15.27
• 5.15.28
• 5.15.29
• 5.15.30
• 5.15.31
• 5.15.32
• 5.15.33
• 5.15.34
• 5.15.35
• 5.15.36
• 5.15.37
• 5.15.38
• 5.15.39
• 5.15.40
• 5.15.41
• 5.15.42
• 5.15.43
• 5.15.44
• 5.15.45
• 5.15.46
• 5.15.47
• 5.15.48
• 5.15.49
• 5.15.50
• 5.15.51
• 5.15.52
• 5.15.53
• 5.15.54
• 5.15.55
• 5.15.56
• 5.15.57
• 5.15.58
• 5.15.59
• 5.15.60
• 5.15.61
• 5.15.62
• 5.15.63
• 5.15.64
• 5.15.65
• 5.15.66
• 5.15.67
• 5.15.68
• 5.15.69
• 5.15.70
• 5.15.71
• 5.15.72
• 5.15.73
• 5.15.74
• 5.15.75
• 5.15.76
• 5.15.77
• 5.15.78
• 5.15.79
• 5.15.80
• 5.15.81
• 5.15.82
• 5.15.83
• 5.15.84
• 5.15.85
• 5.15.86
• 5.15.87
• 5.15.88
• 5.15.89
• 5.15.90
• 5.15.91
• 5.15.92
• 5.15.93
• 5.15.94
• 5.15.95
• 5.15.96
• 5.15.97
• 5.15.98
• 5.15.99
• 6.1.0
• 6.1.1
• 6.1.2
• 6.1.3
• 6.1.4
• 6.1.5
• 6.1.6
• 6.1.7
• 6.1.8
• 6.1.9
• 6.1.10
• 6.1.11
• 6.1.12
• 6.1.13
• 6.1.14
• 6.1.15
• 6.1.16
• 6.1.17
• 6.2.0
• 6.2.1
• 6.2.2
• 6.2.3
• 6.2.4

License

• open-source

Website

• Vendor: https://www.kernel.org/

CPE 2.3info

• 🔒
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CPE 2.2info

• 🔒
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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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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Reference count
CWE: CWE-911 / CWE-664
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
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Nessus ID: 265525
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2023-53443

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 5.4.235/5.10.173/5.15.100/6.1.18/6.2.5
Patch: 7195e642b49af60d4120fa1b45bd812ba528174f/754e81ff44061dda68da0fd4ef51bd1aa9fbf2cf/5a47bb71b1a94a279144fc3031d3c4591b38dd16/9893771097b22a8743a446e45994a177795ca4da/dc9437e9889c3dacf1f320e3cf08da74127573fe/4414a7ab80cebf715045e3c4d465feefbad21139

Timelineinfo

09/17/2025 CVE reserved
09/18/2025 +1 days Advisory disclosed
09/18/2025 +0 days VulDB entry created
12/13/2025 +86 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2023-53443 (🔒)
GCVE (CVE): GCVE-0-2023-53443
GCVE (VulDB): GCVE-100-324944
CERT Bund: WID-SEC-2025-2092 - Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of Service

Entryinfo

Created: 09/18/2025 19:25
Updated: 12/13/2025 04:25
Changes: 09/18/2025 19:25 (59), 09/20/2025 20:46 (7), 09/22/2025 03:27 (2), 11/29/2025 19:33 (1), 12/13/2025 04:25 (10)
Complete: 🔍
Cache ID: 216::103

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Discussion

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