Linux Kernel up to 5.18.7 of_find_matching_node null pointer dereference

Summaryinfo

A vulnerability, which was classified as critical, was found in Linux Kernel up to 5.18.7. The affected element is the function of_find_matching_node. Executing a manipulation can lead to null pointer dereference. This vulnerability is tracked as CVE-2022-49680. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability has been found in Linux Kernel up to 5.18.7 and classified as critical. This vulnerability affects the function of_find_matching_node. The manipulation with an unknown input leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. As an impact it is known to affect availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: ARM: exynos: Fix refcount leak in exynos_map_pmu of_find_matching_node() 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. of_node_put() checks null pointer.

The advisory is shared for download at git.kernel.org. This vulnerability was named CVE-2022-49680 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 545ae5cbae839ce39bfe09828e413f1c916082de/31d09571bb071c20f6bdc0bb7ac1ef8dd2987c04/7571bcecf01b69f0d3ec60ca41ce5d4c75411a4a/f9b77a52937582a5b99a5a07e4ef1e2f48f87347/68f28d52e6cbab8dcfa249cac4356d1d0573e868/d23f76018e17618559da9eea179d137362023f95/fc354856e9fad9cd36e2ad28f9da70716025055a/c4c79525042a4a7df96b73477feaf232fe44ae81 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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