Linux Kernel up to 5.18.7 of_find_compatible_node reference count

Summaryinfo

A vulnerability was found in Linux Kernel up to 5.18.7. It has been classified as critical. This impacts the function of_find_compatible_node. This manipulation causes reference count. This vulnerability is registered as CVE-2022-49679. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Linux Kernel up to 5.18.7. It has been declared as critical. Affected by this vulnerability is the function of_find_compatible_node. 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: Fix refcount leak in axxia_boot_secondary of_find_compatible_node() returns a node pointer 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. This vulnerability is known as CVE-2022-49679 since 02/26/2025. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 4.9.321, 4.14.286, 4.19.250, 5.4.202, 5.10.127, 5.15.51 or 5.18.8 eliminates this vulnerability. Applying the patch a9b76c232a1ce4cbf27862097f7eb634dcc779eb/b385cb59aac8d61c29bc72ebf3d19a536914af96/71e12e5b02674459a24f16e965255d63b31fe049/29ca9c4efacccdc15104a8d4bf10b5183fc92840/44a5b3a073e5aaa5720929dba95b2725eb32bb65/4d9c60e868f7cf8e09956e7d5bb44d807d712699/3c19fe3f04f4f4e7a2b722c2fd3c98356fc1d72b/7c7ff68daa93d8c4cdea482da4f2429c0398fcde 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

• 4.9.320
• 4.14.285
• 4.19.249
• 5.4.201
• 5.10.126
• 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
• 5.18.0
• 5.18.1
• 5.18.2
• 5.18.3
• 5.18.4
• 5.18.5
• 5.18.6
• 5.18.7

License

• open-source

Website

• Vendor: https://www.kernel.org/

CPE 2.3info

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CPE 2.2info

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Entryinfo

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