Linux Kernel up to 5.18.2 of_node_put reference count

Summaryinfo

A vulnerability has been found in Linux Kernel up to 5.18.2 and classified as critical. Affected by this vulnerability is the function of_node_put. This manipulation causes reference count. This vulnerability is registered as CVE-2022-49457. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as critical was found in Linux Kernel up to 5.18.2. Affected by this vulnerability is the function of_node_put. The manipulation with an unknown input leads to a reference count vulnerability. The CWE definition for the vulnerability is CWE-911. The product uses a reference count to manage a resource, but it does not update or incorrectly updates the reference count. As an impact it is known to affect availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: ARM: versatile: Add missing of_node_put in dcscb_init The device_node pointer is returned by of_find_compatible_node with refcount incremented. We should use of_node_put() to avoid the refcount leak.

It is possible to read the advisory at git.kernel.org. This vulnerability is known as CVE-2022-49457 since 02/26/2025. Technical details of the vulnerability are known, but there is no available exploit.

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 2d7b23db35254b7d46e852967090c64cdccf24da/bbdfb7d4f036118d36415a2575efa6f5246505ae/a0fc05cd17617e63fc13ad0c01f3f0afd890d8ec/fcd1999ba97445a12cc394f5f42ffd9116bf0185/d146e2a9864ade19914494de3fb520390b415d58/83c329b980bddbc8c6a3d287d91f2103a4d4a860/3c6006faed9aba5144b33176d061031a9be66954/d6de7b181c29cd4578ec139aafb5eac062abbe1b/23b44f9c649bbef10b45fa33080cd8b4166800ae 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.

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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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Exploitinginfo

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Entryinfo

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