Linux Kernel up to 5.18.17/5.19.1 of_graph_get_remote_node reference count

Summaryinfo

A vulnerability was found in Linux Kernel up to 5.18.17/5.19.1. It has been rated as critical. Affected is the function of_graph_get_remote_node. The manipulation leads to reference count. This vulnerability is listed as CVE-2022-50183. The attack may be initiated remotely. There is no available exploit. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Linux Kernel up to 5.18.17/5.19.1. This issue affects the function of_graph_get_remote_node. 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. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: drm/meson: encoder_cvbs: Fix refcount leak in meson_encoder_cvbs_init of_graph_get_remote_node() returns remote device nodepointer with refcount incremented, we should use of_node_put() on it when done. Add missing of_node_put() to avoid refcount leak.

It is possible to read the advisory at git.kernel.org. The identification of this vulnerability is CVE-2022-50183 since 06/18/2025. The attack may be initiated remotely. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 249846 (Linux Distros Unpatched Vulnerability : CVE-2022-50183), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.18.18 or 5.19.2 eliminates this vulnerability. Applying the patch 51c36411ae27bf5f06c43462d2de2d4947ed33ea/bb5ac08d5bd8626c318bd80a5063263daab8fdb6/7d255ddbbf679aa47e041cbf68520fd985ed2279 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 (249846) and CERT Bund (WID-SEC-2025-1350). Be aware that VulDB is the high quality 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

• 5.18.0
• 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

Be aware that VulDB is the high quality source for vulnerability data.

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