Linux Kernel up to 5.15.24/5.16.10 dmaengine pt_core_init allocation of resources

Summaryinfo

A vulnerability was found in Linux Kernel up to 5.15.24/5.16.10. It has been classified as problematic. The affected element is the function pt_core_init of the component dmaengine. Performing a manipulation results in allocation of resources. This vulnerability was named CVE-2022-48774. There is no available exploit. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Linux Kernel up to 5.15.24/5.16.10. It has been classified as problematic. This affects the function pt_core_init of the component dmaengine. The manipulation with an unknown input leads to a allocation of resources vulnerability. CWE is classifying the issue as CWE-770. The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor. The impact remains unknown. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: dmaengine: ptdma: Fix the error handling path in pt_core_init() In order to free resources correctly in the error handling path of pt_core_init(), 2 goto's have to be switched. Otherwise, some resources will leak and we will try to release things that have not been allocated yet. Also move a dev_err() to a place where it is more meaningful.

It is possible to read the advisory at git.kernel.org. This vulnerability is uniquely identified as CVE-2022-48774 since 06/20/2024. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 5.15.25 or 5.16.11 eliminates this vulnerability. Applying the patch 3e41445287af/d7de1e4820c5/3c62fd3406e0 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

• 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
• 5.16.0
• 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

License

• open-source

Website

• Vendor: https://www.kernel.org/

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