Linux Kernel up to 5.15.32/5.16.18/5.17.1 devm_kzalloc null pointer dereference

Summaryinfo

A vulnerability has been found in Linux Kernel up to 5.15.32/5.16.18/5.17.1 and classified as critical. Impacted is the function devm_kzalloc. Performing a manipulation results in null pointer dereference. This vulnerability is cataloged as CVE-2022-49184. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as critical, was found in Linux Kernel up to 5.15.32/5.16.18/5.17.1. This affects the function devm_kzalloc. The manipulation with an unknown input leads to a null pointer dereference vulnerability. CWE is classifying the issue as 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. This is going to have an impact on availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: net: sparx5: switchdev: fix possible NULL pointer dereference As the possible failure of the allocation, devm_kzalloc() may return NULL pointer. Therefore, it should be better to check the 'db' in order to prevent the dereference of NULL pointer.

The advisory is shared at git.kernel.org. This vulnerability is uniquely identified as CVE-2022-49184 since 02/26/2025. Technical details are known, but no exploit is available.

Upgrading to version 5.15.33, 5.16.19 or 5.17.2 eliminates this vulnerability. Applying the patch b375ea083fa649092cd016ac1f89a2d1fd8f8e8b/c346791877e6ce923bb21e34b30c6f99326aa5a8/e7e1fff76c4c57688dc7d53a3b6212182d5628d0/0906f3a3df07835e37077d8971aac65347f2ed57 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.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 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
• 5.16.0
• 5.16.1
• 5.16.2
• 5.16.3
• 5.16.4
• 5.16.5
• 5.16.6
• 5.16.7
• 5.16.8
• 5.16.9
• 5.16.10
• 5.16.11
• 5.16.12
• 5.16.13
• 5.16.14
• 5.16.15
• 5.16.16
• 5.16.17
• 5.16.18
• 5.17.0
• 5.17.1

License

• open-source

Website

• Vendor: https://www.kernel.org/

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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