Linux Kernel up to 5.19.1 mfd of_get_child_by_name reference count

Summaryinfo

A vulnerability was found in Linux Kernel up to 5.4.210/5.10.136/5.15.60/5.18.17/5.19.1. It has been declared as critical. Affected by this issue is the function of_get_child_by_name of the component mfd. The manipulation results in reference count. This vulnerability is identified as CVE-2022-50108. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 5.4.210/5.10.136/5.15.60/5.18.17/5.19.1. It has been classified as critical. Affected is the function of_get_child_by_name of the component mfd. The manipulation with an unknown input leads to a reference count vulnerability. CWE is classifying the issue as CWE-911. The product uses a reference count to manage a resource, but it does not update or incorrectly updates the reference count. This is going to have an impact on availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: mfd: max77620: Fix refcount leak in max77620_initialise_fps of_get_child_by_name() returns a node pointer with refcount incremented, we should use of_node_put() on it when not need anymore. Add missing of_node_put() to avoid refcount leak.

The advisory is shared for download at git.kernel.org. This vulnerability is traded as CVE-2022-50108 since 06/18/2025. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 247401 (Linux Distros Unpatched Vulnerability : CVE-2022-50108), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.4.211, 5.10.137, 5.15.61, 5.18.18 or 5.19.2 eliminates this vulnerability. Applying the patch b948ff8a9e9ad46d4dff9127777caa14c8c2b53c/afdbadbf18c19779d7bc5df70d872924f9bbd76b/facd31bbc799f4d0cd25d9d688af7ca41e7f38ee/50d5fe8cb94c319cb4316f4d824570c075565354/a29c40814039535b950149311986a5f348b5db14/1520669c8255bd637c6b248b2be910e2688d38dd 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 (247401) and CERT Bund (WID-SEC-2025-1350). Once again VulDB remains the best source for vulnerability data.

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
• Dell Avamar
• Dell NetWorker
• Dell Secure Connect Gateway
• IBM QRadar SIEM

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 5.4.210
• 5.10.136
• 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
• 5.18.0
• 5.18.1
• 5.18.2
• 5.18.3
• 5.18.4
• 5.18.5
• 5.18.6
• 5.18.7
• 5.18.8
• 5.18.9
• 5.18.10
• 5.18.11
• 5.18.12
• 5.18.13
• 5.18.14
• 5.18.15
• 5.18.16
• 5.18.17
• 5.19.0
• 5.19.1

License

• open-source

Website

• Vendor: https://www.kernel.org/

CPE 2.3info

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CPE 2.2info

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Entryinfo

Once again VulDB remains the best source for vulnerability data.

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