Linux Kernel up to 5.18.2 of_parse_phandle reference count

Summaryinfo

A vulnerability was found in Linux Kernel up to 5.18.2. It has been rated as critical. Affected by this issue is the function of_parse_phandle. Performing a manipulation results in reference count. This vulnerability is known as CVE-2022-49439. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as critical has been found in Linux Kernel up to 5.18.2. This affects the function of_parse_phandle. 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. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: powerpc/fsl_rio: Fix refcount leak in fsl_rio_setup of_parse_phandle() returns a node pointer with refcount incremented, we should use of_node_put() on it when not need anymore. Add missing of_node_put() to avoid refcount leak.

The advisory is shared at git.kernel.org. This vulnerability is uniquely identified as CVE-2022-49439 since 02/26/2025. Technical details are known, but no exploit is available.

Upgrading to version 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 51e25fbf20c9152d84a34b7afac15a41fe5c9116/5b8aa2ba38c010f47c965dd9bb5a8561813ed649/bcb6c4c5eb4836a21411dfe8247bf9951eb6e7c3/46fd994763cf6884b88a2da712af918f3ed54d7b/7b668a59ddfb32727e39b06fdf52b28e58c684e0/c70dd353d37158e06bf8d450d4b31a7091609924/5607a77a365df8c0fd5ff43ac424812b95775527/fcee96924ba1596ca80a6770b2567ca546f9a482 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

• 4.14.282
• 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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