Linux Kernel up to 5.18.2 hisi of_node_put reference count

Summaryinfo

A vulnerability labeled as critical has been found in Linux Kernel up to 5.18.2. This issue affects the function of_node_put of the component hisi. The manipulation results in reference count. This vulnerability was named CVE-2022-49447. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as critical, was found in Linux Kernel up to 5.18.2. Affected is the function of_node_put of the component hisi. 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: ARM: hisi: Add missing of_node_put after of_find_compatible_node of_find_compatible_node will increment the refcount of the returned device_node. Calling of_node_put() to avoid the refcount leak

The advisory is shared for download at git.kernel.org. This vulnerability is traded as CVE-2022-49447 since 02/26/2025. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 235756 (EulerOS 2.0 SP10 : kernel (EulerOS-SA-2025-1521)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 4.9.318, 4.14.283, 4.19.247, 5.4.198, 5.10.121, 5.15.46, 5.17.14 or 5.18.3 eliminates this vulnerability. Applying the patch 46cb7868811d025c3d29c10d18b3422db1cf20d5/f8da78b2bae1f54746647a2bb44f8bd6025c57af/dd4be8ecfb41a29e7c4e551b4e866157ce4a3429/e109058165137ef42841abd989f080adfefa14fa/21a3effe446dd6dc5eed7fe897c2f9b88c9a5d6d/a3265a9440030068547a20dfee646666f3ca5278/cafaaae4bb9ce84a2791fa29bf6907a9466c3883/45d211668d33c49d73f5213e8c2b58468108647c/9bc72e47d4630d58a840a66a869c56b29554cfe4 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 Tenable (235756). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 4.9.317
• 4.14.282
• 4.19.246
• 5.4.197
• 5.10.120
• 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
• 5.17.0
• 5.17.1
• 5.17.2
• 5.17.3
• 5.17.4
• 5.17.5
• 5.17.6
• 5.17.7
• 5.17.8
• 5.17.9
• 5.17.10
• 5.17.11
• 5.17.12
• 5.17.13
• 5.18.0
• 5.18.1
• 5.18.2

License

• open-source

Website

• Vendor: https://www.kernel.org/

CPE 2.3info

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CPE 2.2info

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Entryinfo

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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