Linux Kernel up to 5.15.12 intel-sdw-acpi access control

Summaryinfo

A vulnerability categorized as critical has been discovered in Linux Kernel up to 5.15.12. This affects an unknown function of the component intel-sdw-acpi. Executing a manipulation can lead to access control. This vulnerability appears as CVE-2021-46926. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 5.15.12 (Operating System). It has been declared as critical. This vulnerability affects an unknown functionality of the component intel-sdw-acpi. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: ALSA: hda: intel-sdw-acpi: harden detection of controller The existing code currently sets a pointer to an ACPI handle before checking that it's actually a SoundWire controller. This can lead to issues where the graph walk continues and eventually fails, but the pointer was set already. This patch changes the logic so that the information provided to the caller is set when a controller is found.

The weakness was presented 02/27/2024. The advisory is available at git.kernel.org. This vulnerability was named CVE-2021-46926 since 02/25/2024. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1068 by the MITRE ATT&CK project.

Upgrading to version 5.15.13 or 5.16 eliminates this vulnerability. Applying the patch cce476954401/385f287f9853 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

License

• open-source

Website

• Vendor: https://www.kernel.org/

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