Linux Kernel up to 5.18.5 of_find_matching_node_and_match reference count

Summaryinfo

A vulnerability was found in Linux Kernel up to 5.18.5. It has been classified as critical. Affected by this issue is the function of_find_matching_node_and_match. Performing a manipulation results in reference count. This vulnerability is cataloged as CVE-2022-49719. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as critical, was found in Linux Kernel up to 5.18.5. This affects the function of_find_matching_node_and_match. 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: irqchip/gic/realview: Fix refcount leak in realview_gic_of_init of_find_matching_node_and_match() 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-2022-49719 since 02/26/2025. Technical details are known, but no exploit is available.

Upgrading to version 4.9.320, 4.14.285, 4.19.249, 5.4.200, 5.10.124, 5.15.49 or 5.18.6 eliminates this vulnerability. Applying the patch 87da903ce632d5689bef66d56ee5dae700d82104/486f68f85085d9b16ae097679b1486dcb1b6eb69/b634af84bc1edece4e63317b0ad95618dd3a8693/56526c3883fc7a1f5898b1d40a02c8b8685a5d92/e52a58b79f11755ea7e877015c4a1704303fa55f/5d38720661a4b9c87705c206a6081177ffb8ec1d/16b603cb8d34c2d917983918db1f88c8b831baaa/f4b98e314888cc51486421bcf6d52852452ea48b 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

• 4.9.319
• 4.14.284
• 4.19.248
• 5.4.199
• 5.10.123
• 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
• 5.18.0
• 5.18.1
• 5.18.2
• 5.18.3
• 5.18.4
• 5.18.5

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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