Linux Kernel up to 5.18.7 cns3xxx_init of_find_compatible_node reference count

Summaryinfo

A vulnerability described as problematic has been identified in Linux Kernel up to 5.18.7. The impacted element is the function of_find_compatible_node of the component cns3xxx_init. Such manipulation leads to reference count. This vulnerability is referenced as CVE-2022-49677. 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 rated as problematic. Affected by this issue is the function of_find_compatible_node of the component cns3xxx_init. 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. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: ARM: cns3xxx: Fix refcount leak in cns3xxx_init 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.

The advisory is shared for download at git.kernel.org. This vulnerability is handled as CVE-2022-49677 since 02/26/2025. There are known technical details, but no exploit is available.

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 b8b84e01ca94e2e1f5492353e9c24dab520b2e5b/45bebbc8cea7d586a6216dc62814bdb380b9b29b/68d4303bf59662b64bd555e2aa0518282d20aa4f/d1359e4129ad43e43972a28838b87291c51de23d/c980392af1473d6d5662f70d8089c8e6d85144a4/da3ee7cd2f15922ad88a7ca6deee2eafdc7cd214/dc5170aae24e04068fd5ea125d06c0ab51f48a27/1ba904b6b16e08de5aed7c1349838d9cd0d178c5 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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